I2C-bus controlled 4 x 45 W power amplifier with six voltage regulators

TDF8551J
I2C-bus controlled 4 × 45 W power amplifier with six voltage
regulators
Rev. 02 — 18 August 2009
Product data sheet
1. General description
1.1 Amplifiers
The TDF8551J has a complementary quad audio power amplifier that uses BCDMOS
technology. It contains four amplifiers configured in Bridge-Tied Load (BTL) to drive four
speakers: two front and two rear channels. The I2C-bus enables diagnostic information of
each amplifier and its speaker to be read separately. Both front and both rear channel
amplifiers can be configured independently in line driver mode with a gain of 20 dB
(differential output) or amplifier mode with a gain of 26 dB (BTL output).
1.2 Voltage regulators and switches
The TDF8551J has six output voltage regulators and two power switches:
•
•
•
•
Four switchable regulators and two standby regulators
Two power switches with loss-of-ground protection and surge protection
Second supply pin to reduce dissipation by means of an external DC-to-DC converter
Backup functionality for regulator 2
2. Features
n Amplifiers
u I2C-bus control
u Can drive a 2 Ω load with a battery voltage of up to 16 V and a 4 Ω load with a
battery voltage of up to 18 V
u DC load detection: open, short and present
u AC load (tweeter) detection
u Programmable clip detect; 1 % or 3 %
u Programmable thermal protection pre-warning
u Independent short-circuit protection for each channel
u Selectable line driver (20 dB) and amplifier mode (26 dB)
u Loss-of-ground and open VP safe
u All outputs protected from short-circuit to ground, to VP or across the load
u All pins protected from short-circuit to ground
u Soft thermal-clipping to prevent audio holes
u Low battery detection
n Voltage regulators and switches
u I2C-bus control
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
u Good stability for any regulator with almost any output capacitor value
u Six voltage regulators (microcontroller, display, audio processor, tuner, bus,
mechanical digital and drive)
u Selectable output voltages for regulators 1, 4 and 5
u Low dropout voltage PNP output stages
u High supply voltage ripple rejection
u Low noise for all regulators
u Two power switches (antenna switch and amplifier switch)
u Standby regulators 2 and 6 (microcontroller and bus supply) operational during
load dump and thermal shutdown
u Low standby quiescent current (regulators 2 and 6 operational only)
u Second supply pin for connecting optional external DC-to-DC converter to reduce
internal dissipation
u Backup functionality for regulator 2
n Protection
u If connection to the battery voltage is reversed, all regulator voltages will be zero
u Withstands output voltages up to 18 V (supply line may be short-circuited)
u Thermal protection to avoid thermal breakdown
u Load dump protection
u Regulator outputs protected from DC short-circuit to ground or to supply voltage
u All regulators protected by foldback current limiting
u Power switches protected from loss-of-ground and surge conditions
3. Applications
n Boost amplifier and voltage regulator for car radios and CD/MD players
4. Quick reference data
Table 1.
Quick reference data
Symbol Parameter
Conditions
Min
Typ
Max Unit
8
14.4
18
V
Amplifiers
VP(oper)
operating supply
voltage
RL = 4 Ω
Iq(tot)
total quiescent
current
no load
-
280
400
mA
Po(max)
maximum output
power
[1]
RL = 4 Ω; VP = 14.4 V; VIN = 2 V RMS square wave
39
41
-
W
RL = 4 Ω; VP = 15.2 V; VIN = 2 V RMS square wave
44
46
-
W
RL = 2 Ω; VP = 14.4 V; VIN = 2 V RMS square wave
64
69
-
W
-
0.01
0.1
%
line driver mode
-
25
35
µV
amplifier mode
-
50
70
µV
THD
total harmonic
distortion
Po = 1 W to 12 W; f = 1 kHz; RL = 4 Ω
Vn(o)
output noise voltage
filter 20 Hz to 22 kHz; Rs = 600 Ω
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
2 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 1.
Quick reference data …continued
Symbol Parameter
Conditions
Min
Typ
Max Unit
regulators 1, 3, 4 and 5 on; switches 1 and 2 on
10
14.4
18
V
jump starts for t ≤ 10 minutes
-
-
30
V
Voltage regulators
supply voltage
VP
load dump protection for t ≤ 50 ms and tr ≥ 2.5 ms
-
-
50
V
regulator 1, 3, 4 and 5 on; switches 1 and 2 on
18.1
22
-
V
4.75
5.0
VP
V
-
180
250
µA
IB2[D3:D2] = 01
7.9
8.3
8.7
V
IB2[D3:D2] = 10
8.1
8.6
9.1
V
IB2[D3:D2] = 11
4.75
5.0
5.25 V
regulator 2; 0.5 mA ≤ IO ≤ 350 mA; 10 V ≤ VP ≤ 18 V
3.1
3.3
3.5
V
regulator 3; 0.5 mA ≤ IO ≤ 525 mA; 5 V ≤ VDCDC ≤ 18 V
3.1
3.3
3.5
V
IB2[D7:D5] = 001
4.75
5.0
5.25 V
IB2[D7:D5] = 010
5.7
6.0
6.3
V
IB2[D7:D5] = 011
6.6
7.0
7.4
V
IB2[D7:D5] = 100
8.1
8.6
9.1
V
IB2[D7:D5] = 101
7.6
8.0
8.4
V
V
Vth(dis)
disable threshold
voltage
VDCDC
DC-to-DC converter
voltage
Iq(tot)
total quiescent
current
Standby mode; VP = 14.4 V
VO(reg)
regulator output
voltage
regulator 1; 0.5 mA ≤ IO ≤ 400 mA; 10 V ≤ VP ≤ 18 V
regulator 4; 0.5 mA ≤ IO ≤ 800 mA; 10 V ≤ VP ≤ 18 V
regulator 5; 0.5 mA ≤ IO ≤ 400 mA
10 V ≤ VP ≤ 18 V; IB1[D7:D4] = 0001
5.7
6.0
6.3
10 V ≤ VP ≤ 18 V; IB1[D7:D4] = 0010
6.65
7.0
7.37 V
10 V ≤ VP ≤ 18 V; IB1[D7:D4] = 0011
7.8
8.2
8.6
10.5 V ≤ VP ≤ 18 V; IB1[D7:D4] = 0100
8.55
9.0
9.45 V
V
11 V ≤ VP ≤ 18 V; IB1[D7:D4] = 0101
9.0
9.5
10.0 V
11.5 V ≤ VP ≤ 18 V; IB1[D7:D4] = 0110
9.5
10.0
10.5 V
13 V ≤ VP ≤ 18 V; IB1[D7:D4] = 0111
9.9
10.4
10.9 V
14.2 V ≤ VP ≤ 18 V; IB1[D7:D4] = 1000
11.8
12.5
13.2 V
12.5 V ≤ VP ≤ 18 V; IB1[D7:D4] = 1001
VP − 1
VP − 0.5 -
10 V ≤ VP ≤ 18 V; IB1[D7:D4] = 1010
4.75
5.0
5.25 V
10 V ≤ VP ≤ 18 V; IB1[D7:D4] = 1011
3.1
3.3
3.5
regulator 6; 0.5 mA ≤ IO ≤ 100 mA; 10 V ≤ VP ≤ 18 V
4.75
5.0
5.25 V
switch 1; IO = 400 mA
-
0.6
1.1
V
switch 2; IO = 400 mA
-
0.6
1.1
V
V
V
Power switches
dropout voltage
Vdo
[1]
voltage on pin Vp1 and/or pin Vp2
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
3 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
5. Ordering information
Table 2.
Ordering information
Type number
TDF8551J
Package
Name
Description
Version
DBS37P
plastic DIL-bent-SIL power package; 37 leads (lead length 6.8 mm)
SOT725-1
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
4 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
6. Block diagram
28
REGULATOR 6
BUCAP
36
VDCDC
35
26
ENABLE
LOGIC
REGULATOR 1
30
REGULATOR 3
31
REGULATOR 4
33
REGULATOR 5
34
SWITCH 1
29
SWITCH 2
27
32
SDA
SCL
STB
IN1
20
2
6
TDF8551J
4
25
22
STANDBY/MUTE
11
I2C-BUS
INTERFACE
REG1
REG3
REG4
REG5
SW1
SW2
GND
VP1
VP2
DIAG
CLIP DETECT/DIAGNOSTIC
9
MUTE
REG2
TEMPERATURE AND
LOAD DUMP
PROTECTION VOLTAGE
REGULATOR
REFERENCE
VOLTAGE
BACKUP
SWITCH
VP
37
REGULATOR 2
REG6
26 dB/
20 dB
7
OUT1+
OUT1−
PROTECTION/
DIAGNOSTIC
IN2
15
17
MUTE
26 dB/
20 dB
19
OUT2+
OUT2−
PROTECTION/
DIAGNOSTIC
IN3
12
5
MUTE
26 dB/
20 dB
3
OUT3+
OUT3−
PROTECTION/
DIAGNOSTIC
IN4
14
21
MUTE
26 dB/
20 dB
VP
23
OUT4+
OUT4−
PROTECTION/
DIAGNOSTIC
TEMPERATURE AND LOAD
DUMP PROTECTION
AMPLIFIER
10
SVR
13
16
SGND
ACGND
Fig 1.
8
1
18
24
PGND1
PGND3
PGND2/TAB
PGND4
001aaj105
Block diagram
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
5 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
7. Pinning information
7.1 Pinning
PGND2/TAB
1
SDA
2
OUT3−
3
SCL
4
OUT3+
5
VP2
6
OUT1−
7
PGND1
8
OUT1+
9
SVR 10
IN1 11
IN3 12
SGND 13
IN4 14
IN2 15
ACGND 16
OUT2+ 17
PGND3 18
OUT2− 19
TDF8551J
VP1 20
OUT4+ 21
STB 22
OUT4− 23
PGND4 24
DIAG 25
VDCDC 26
SW2 27
REG6 28
SW1 29
REG1 30
REG3 31
GND 32
REG4 33
REG5 34
VP 35
BUCAP 36
REG2 37
001aaj106
Fig 2.
Pin configuration
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
6 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
7.2 Pin description
Table 3.
Pin description
Symbol
Pin
Description
PGND2/TAB
1
power ground 2 and connection for heatsink
SDA
2
I2C-bus data input and output
OUT3−
3
channel 3 negative output
SCL
4
I2C-bus clock input
OUT3+
5
channel 3 positive output
VP2
6
power supply voltage 2 to amplifiers
OUT1−
7
channel 1 negative output
PGND1
8
power ground 1
OUT1+
9
channel 1 positive output
SVR
10
half supply voltage filter capacitor
IN1
11
channel 1 input
IN3
12
channel 3 input
SGND
13
signal ground
IN4
14
channel 4 input
IN2
15
channel 2 input
ACGND
16
AC ground
OUT2+
17
channel 2 positive output
PGND3
18
power ground 3
OUT2−
19
channel 2 negative output
VP1
20
power supply voltage 1 to amplifiers
OUT4+
21
channel 4 positive output
STB
22
standby, operating or mute mode select input
OUT4−
23
channel 4 negative output
PGND4
24
power ground 4
DIAG
25
diagnostic and clip detection output, active-LOW
VDCDC
26
power supply voltage from optional DC-to-DC converter
SW2
27
antenna switch; supplies unregulated power to car aerial motor
REG6
28
regulator 6 output; supply for bus controller
SW1
29
amplifier switch; supplies unregulated power to amplifiers
REG1
30
regulator 1 output; supply for audio part of radio and CD player
REG3
31
regulator 3 output; supply for signal processor part (mechanical
digital) of CD player
GND
32
combined voltage regulator, power and signal ground
REG4
33
regulator 4 output; supply for mechanical part (mechanical drive)
of CD player
REG5
34
regulator 5 output; supply for display part of radio and CD player
VP
35
power supply to voltage regulators
BUCAP
36
connection for backup capacitor
REG2
37
regulator 2 output; supply voltage to microcontroller
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
7 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
8. Functional description
The TDF8551J is an IC which provides six voltage regulators in combination with four
independent, BTL configured, power amplifiers and diagnostic capabilities. All regulator
output voltages except regulators 2 and 6 can be controlled via the I2C-bus.
The amplifier diagnostic functions give information about output offset, load, or
short-circuit. The diagnostic functions are controlled using the I2C-bus. The TDF8551J is
protected against short-circuit, overtemperature, open ground and open VP connections.
If a short-circuit occurs at the output of a single amplifier, that channel shuts down and the
other channels continue to operate normally. The short-circuited channel can be switched
off by the microcontroller using the appropriate enable bit of the I2C-bus to prevent any
noise generated by the fault condition from being heard.
8.1 Start-up
At power on, regulators 2 and 6 reach their final voltage when the backup capacitor
voltage exceeds 5.5 V, independently of the voltage on pin STB. When pin STB is LOW,
the total quiescent current is low and the I2C-bus lines are high-impedance.
When pin STB is HIGH, the I2C-bus is biased on and the TDF8551J performs a power-on
reset. When bit IB1[D0] is set, the amplifier is activated, DB2[D7] (power-on reset
occurred) is reset and pin DIAG is no longer held LOW.
8.2 Start-up and shutdown timing
See Figure 12.
A capacitor connected to pin SVR enables smooth start-up and shutdown, preventing the
amplifier from producing audible clicks at switch-on or switch-off. The start-up and
shutdown times can be extended by increasing the capacitor value.
If the amplifier is shutdown using pin STB, it is muted, the regulators and switches are
switched off, and the capacitor connected to pin SVR discharges. The low-current
Standby mode is activated 2 seconds after pin STB goes LOW.
8.3 Power-on reset and supply voltage spikes
See Figure 13 and Figure 14.
If the supply voltage drops too low to guarantee the integrity of the data in the I2C-bus
latches, the power-on reset cycle will start. All latches will be set to a predefined state,
pin DIAG will be pulled LOW to indicate that a power-on reset has occurred, and bit
DB2[D7] is also set for the same reason. When IB1[D0] is set, the power-on flag resets,
pin DIAG is released and the amplifier enters its start-up cycle.
8.4 Diagnostic output
Pin DIAG indicates clipping, thermal protection pre-warning of amplifier and voltage
regulator parts, short-circuit protection and low and high battery voltage. Pin DIAG is an
active-LOW, open-drain output which must be connected to an external voltage using an
external pull-up resistor. If a failure occurs, pin DIAG remains LOW during the failure and
no clipping information is available. The microcontroller can read the failure information
using the I2C-bus.
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
8 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
8.5 Amplifiers
8.5.1 Muting
Both a hard mute and a soft mute can be performed using the I2C-bus. A hard mute mutes
the amplifier within 0.5 ms. A soft mute mutes the amplifier within 20 ms and is less
audible. A hard mute is also activated if a voltage of 8 V is applied to pin STB.
8.5.2 Temperature protection
If the average junction temperature rises to the temperature trigger value that has been
set using the I2C-bus, a thermal protection pre-warning is activated making pin DIAG
LOW. If the temperature continues to rise, all four channels are muted to reduce the output
power (soft thermal clipping). However, the value at which the temperature mute control
activates is fixed; only the temperature at which the thermal protection pre-warning signal
occurs can be specified by bit IB3[D4].
If applying the temperature mute control does not reduce the average junction
temperature, all the power stages will be switched off (muted) at the absolute maximum
temperature Tj(max).
8.5.3 Offset detection
Offset detection can only be performed when there is no input signal to the amplifiers, for
instance when the external digital signal processor is muted after a start-up. The output
voltage of each channel is measured and compared with a reference voltage. If the output
voltage of a channel is greater than the reference voltage, bit D2 of the associated data
byte is set and read by the microcontroller during a read instruction. Note that the value of
this bit is only meaningful when there is no input signal and the amplifier is not muted.
Offset detection is always enabled.
8.5.4 Speaker protection
If one side of a speaker is connected to ground, the missing current protection is triggered
to prevent damage to the speaker. A fault condition is detected in a channel when there is
a mismatch between the power current in the high-side and the power current in the
low-side; during a fault condition the channel will be switched off.
The load status of each channel can be read using the I2C-bus: short to ground (one side
of the speaker connected to ground), short to VP (one side of the speaker connected to
VP) and shorted load.
8.5.5 Line driver mode
An amplifier can be used as a line-driver by switching it to low-gain mode. In normal mode,
the gain between single-ended input and differential output (across the load) is 26 dB. In
low-gain mode the gain between single-ended input and differential output is 20 dB.
8.5.6 Input and AC ground capacitor values
The negative inputs to all four amplifier channels are combined at pin ACGND. To obtain
the best performance of supply voltage ripple rejection and unwanted audible noise, the
value of the capacitor connected to pin ACGND must be as close as possible to 4 times
the value of the input capacitor connected to the positive input of each channel.
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
9 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
8.5.7 Load detection
8.5.7.1
DC load detection
When DC load detection is enabled, during the start-up cycle, a DC-offset is applied
slowly to the amplifier outputs and the output currents are measured. If the output current
of an amplifier rises above a certain level, it is assumed that there is a load of less than
6 Ω and bit D5 is reset in the associated data byte register to indicate that a load is
detected.
The offset is measured during the amplifier start-up cycle which means detection is
inaudible and can be performed every time the amplifier is switched on.
8.5.7.2
AC load detection
AC load detection can be used to detect that AC-coupled speakers are connected
correctly during assembly. This requires at least 3 periods of a 19 kHz sine wave to be
applied to the amplifier inputs. The amplifier produces a peak output voltage which also
generates a peak output current through the AC-coupled speaker. The 19 kHz sine wave
is also audible during the test. If the amplifier detects three current peaks that are greater
than 550 mA, the AC load detection bit is set. Three current peaks are counted to avoid
false AC load detection which can occur if the input signal is switched on and off. The
peak current counter can be reset by setting bit IB1[D1] to logic 0. To guarantee AC load
detection, an amplifier current of more than 550 mA is required. AC load detection never
occurs with a current of less than 150 mA.
Figure 3 shows which AC loads are detected at different output voltages. For example, if a
load is detected at an output voltage of 2.5 V peak, the load is less than 4 Ω. If no load is
detected, the output impedance is more than 14 Ω.
001aai691
102
(1)
no load present
ZL
(Ω)
undefined
(2)
10
load present
1
0
2.5
5
7.5
10
VoM (V)
(1) IoM = < 150 mA.
(2) IoM = > 550 mA.
Fig 3.
Tolerance of AC load detection as a function of output voltage
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
10 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
8.5.7.3
Load detection procedure
1. At start-up, enable the AC or DC load detection by setting bit IB1[D1] to logic 1.
2. After 250 ms the DC load is detected and the mute is released. This is inaudible and
can be implemented each time the IC is powered on.
3. When the amplifier start-up cycle is completed (after 1.5 s), apply an AC signal to the
input, and DC load bits D5 of each data byte should be read and stored by the
microcontroller.
4. After at least 3 periods of the input signal, the load status can be checked by reading
AC detect bits D4 of each data byte.
The AC load peak current counter can be reset by setting bit IB1[D1] to logic 0 and
then to logic 1. Note that this will also reset the DC load detection bits D5 in each data
byte.
8.5.8 Low headroom protection
The normal DC output voltage of the amplifier is set to half the supply voltage and is
related to the voltage on pin SVR. An external capacitor is connected to pin SVR to
suppress power supply ripple. If the supply voltage drops (at vehicle engine start), the DC
output voltage will follow slowly due to the affect of the SVR capacitor.
The headroom voltage is the voltage required for correct operation of the amplifier and is
defined as the voltage difference between the level of the DC output voltage before the VP
voltage drop and the level of VP after the voltage drop (see Figure 4).
At a certain supply voltage drop, the headroom voltage will be insufficient for correct
operation of the amplifier. To prevent unwanted audible noises at the output, the
headroom protection mode will be activated (see Figure 4). This protection discharges the
capacitors connected to pins SVR and ACGND to increase the headroom voltage.
supply
(V)
14
vehicle engine start
VP
headroom voltage
SVR voltage
8.4
7
amplifier
DC output voltage
t (s)
001aai692
Fig 4.
Amplifier output during supply voltage drop
8.6 Voltage regulators and switches
The TDF8551J has six output voltage regulators and two power switches:
• Four switchable regulators and two standby regulators
• Two power switches with loss-of-ground protection and surge protection
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
11 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
• Second supply pin to reduce dissipation by means of an external DC-to-DC converter
• Backup functionality for regulator 2
The TDF8551J uses low dropout voltage regulators for use in low voltage applications. All
of the voltage regulators except for the standby regulators can be controlled using the
I2C-bus.
The TDF8551J also has two power switches which can deliver unregulated continuous
current and several fail-safe protection modes.
It conforms to peak transient tests and protects against continuous high voltage (24 V),
short-circuits and thermal stress. Standby regulators 2 and 6 will try to maintain output for
as long as possible even if a thermal shutdown or any other fault condition occurs. During
overvoltage stress conditions, all outputs except regulators 2 and 6 will switch-off and the
device will be able to supply a minimum current for an indefinite amount of time sufficient
for powering the memory of a microcontroller and bus controller functionality. Provision is
made for an external reserve supply capacitor to be connected to pin BUCAP which can
store enough energy to allow regulator 2 to supply a microcontroller for a period long
enough for it to prepare for a loss-of-voltage.
8.6.1 Standby regulator outputs
Standby outputs (regulators 2 and 6) are used for the microcontroller and bus controller
supply. These regulators will not shutdown with the switched regulators and cannot be
controlled by the I2C-bus. The standby regulators will not shutdown during load dump
transients or by high temperature protection.
8.6.2 Backup capacitor
A backup capacitor (Cbackup) is used as a backup supply for the regulator 2 output when
the battery supply voltage (VP) cannot support the regulator 2 voltage.
8.6.3 Backup function
The backup function is implemented by a switch function, which behaves like an ideal
diode between pins VP and BUCAP; the forward voltage of this ideal diode depends on
the current flowing through it. The backup function supplies regulator 2 during brief
periods when no supply voltage is present on pin VP. It requires an external capacitor to
be connected to pin BUCAP and ground. When the supply voltage is present on pin VP
this capacitor will be charged to a level of VP − 0.3 V. When the supply voltage is absent
from pin VP, this charge can then be used to supply regulator 2 for a brief period (tbackup)
calculated using the formula:
V P – ( V REG2 – 0.5 )
t backup = C backup × R L ×  -----------------------------------------------


V REG2
(1)
Example: VP = 14.4 V, VREG2 (voltage on pin REG2) = 3.3 V, RL = 1 kΩ and
Cbackup = 100 µF provides a tbackup of 321 ms.
When an overvoltage condition occurs, the voltage on pin BUCAP is limited to
approximately 24 V; see Figure 5.
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
12 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
supply
(V)
VP
VBUCAP
VREG2
t (s)
tbackup
out of regulation
001aai693
V P – ( V REG2 – 0.5 )
t backup = C backup ×  ------------------------------------------------


I load
Fig 5.
Backup capacitor function
8.6.4 Power switches
There are two power switches that provide an unregulated DC voltage output for
amplifiers and an aerial motor respectively. The switches have internal protection for
overtemperature conditions and are activated by setting bits IB1[D2] and IB1[D3] to
logic 1.
In the ON state, the switches have a low impedance to the battery voltage. When the
battery voltage is higher than 22 V, the switches are switched off. When the battery
voltage is below 22 V the switches are set to their original condition.
The power switches have built-in surge protection to be able to absorb energy from
switching inductive or capacitive external loads. This surge protection is implemented in
such a way that in case no supply (VP) is present the supply line will not be charged from
a possible external source connected to a power switch output.
8.6.5 External DC-to-DC converter
The VDCDC supply pin can be connected to an external DC-to-DC down converter
(VO ≥ 5 V) to reduce the dissipation in regulator 3. If no external DC-to-DC converter is
used, the VDCDC pin must be connected to VP.
8.6.6 Protection
All regulator and switch outputs are fully protected by foldback current limiting against load
dumps and short-circuits; see Figure 6. During a load dump all regulator outputs, except
the output of regulators 2 and 6, will go low.
The power switches can withstand ‘loss-of-ground’. This means that if pin GND becomes
disconnected, the switch is protected by automatically connecting its outputs to ground.
8.6.7 Temperature protection
If the junction temperature of a regulator becomes too high, the amplifier(s) are switched
off to prevent unwanted noise signals being audible. A regulator junction temperature that
is too high is indicated by pin DIAG going LOW and is also indicated by setting
bit DB2[D6].
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
13 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
If the junction temperature of the regulator continues to rise and reaches the maximum
temperature protection level, all regulators and switches will be disabled except
regulators 2 and 6.
VREGn
IOS
IREGn
IOlim
001aai698
Fig 6.
Foldback current protection
8.7 I2C-bus specification
0 = write
1 = read
MSB
1
LSB
1
0
1
1
0
0
R/W
mdb516
Fig 7.
Address byte
If address byte bit R/W = 0, the TDF8551J expects three instruction bytes: IB1, IB2 and
IB3; see Table 1 to Table 6.
After a power-on, all instruction bits are set to zero.
If address byte bit R/W = 1, the TDF8551J will send four data bytes to the microcontroller:
DB1, DB2, DB3 and DB4; see Table 7 to Table 10.
SDA
SCL
S
P
START condition
STOP condition
mba608
Fig 8.
Definition of start and stop conditions
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
14 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
SDA
SCL
change
of data
allowed
data line
stable;
data valid
Fig 9.
mba607
Bit transfer
I2C-bus WRITE
SCL
1
SDA
MSB
2
7
MSB − 1
S
8
LSB + 1
ADDRESS
9
ACK
1
MSB
2
MSB − 1
A
W
7
LSB + 1
8
LSB
WRITE DATA
9
ACK
A
P
To stop the transfer, after the last acknowledge (A)
a stop condition (P) must be generated
I2C-bus READ
SCL
1
SDA
MSB
2
7
MSB − 1
S
8
LSB + 1
ADDRESS
9
ACK
R
1
MSB
2
7
MSB − 1
A
LSB + 1
8
LSB
READ DATA
: generated by slave
: start
P
: stop
A
: acknowledge
R/W
ACK
A
P
To stop the transfer, the last byte must not be acknowledged
and a stop condition (P) must be generated
: generated by master (microcontroller)
S
9
001aaj256
: read / write
Fig 10. I2C-bus read and write modes
Table 4.
Instruction byte IB1 bit description
Bit
Symbol
Description
7
D7
regulator 5 output voltage control; see Table 5
6
D6
5
D5
4
D4
3
D3
SW2 control
0 = SW2 off
1 = SW2 on
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
15 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 4.
Instruction byte IB1 bit description …continued
Bit
Symbol
Description
2
D2
SW1 control
0 = SW1 off
1 = SW1 on
1
D1
AC load or DC load detection switch
0 = AC load or DC load detection off; resets DC load detection bits
and AC load detection peak current counter
1 = AC load or DC load detection on
0
D0
amplifier start enable (clear power-on reset flag DB2[D7])
0 = amplifier off; pin DIAG remains LOW
1 = amplifier on; when power-on occurs, bit DB2[D7] is reset and pin
DIAG is released
Table 5.
Regulator 5 (display) output voltage control
Bit
Output (V)
D7
D6
D5
D4
0
0
0
0
0 (off)
0
0
0
1
6.0
0
0
1
0
7.0
0
0
1
1
8.2
0
1
0
0
9.0
0
1
0
1
9.5
0
1
1
0
10.0
0
1
1
1
10.4
1
0
0
0
12.5
1
0
0
1
≤ VP − 1 (switch)
1
0
1
0
5.0
1
0
1
1
3.3
Table 6.
Instruction byte IB2 bit description
Bit
Symbol
Description
7
D7
regulator 4 output voltage control; see Table 7
6
D6
5
D5
4
D4
regulator 3 (mechanical digital) control
0 = regulator 3 off
1 = regulator 3 on
3
D3
2
D2
1
D1
regulator 1 output voltage control; see Table 8
soft mute all amplifier channels (mute delay 20 ms)
0 = mute off
1 = mute on
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
16 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 6.
Instruction byte IB2 bit description …continued
Bit
Symbol
Description
0
D0
hard mute all amplifier channels (mute delay 0.4 ms)
0 = mute off
1 = mute on
Table 7.
Regulator 4 (mechanical drive) output voltage control
Bit
Output (V)
D7
D6
D5
0
0
0
0 (off)
0
0
1
5
0
1
0
6
0
1
1
7
1
0
0
8.6
1
0
1
8.0
Table 8.
Regulator 1 (audio) output voltage control
Bit
Output (V)
D3
D2
0
0
0 (off)
0
1
8.3
1
0
8.6
1
1
5.0
Table 9.
Instruction byte IB3 bit description
Bit
Symbol
Description
7
D7
clip detection level
0 = 3 % detection level
1 = 1 % detection level
6
D6
amplifier channels 1 and 2 gain select
0 = 26 dB gain (normal mode)
1 = 20 dB gain (line-driver mode)
5
D5
amplifier channels 3 and 4 gain select
0 = 26 dB gain (normal mode)
1 = 20 dB gain (line-driver mode)
4
D4
amplifier thermal protection pre-warning
0 = warning at 145 °C
1 = warning at 122 °C
3
D3
disable channel 1
0 = enable channel 1
1 = disable channel 1
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
17 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 9.
Instruction byte IB3 bit description …continued
Bit
Symbol
Description
2
D2
disable channel 2
0 = enable channel 2
1 = disable channel 2
1
D1
disable channel 3
0 = enable channel 3
1 = disable channel 3
0
D0
disable channel 4
0 = enable channel 4
1 = disable channel 4
Table 10.
Instruction byte DB1 bit description
Bit
Symbol
Description
7
D7
amplifier thermal protection pre-warning
0 = no warning
1 = junction temperature above pre-warning level
6
D6
amplifier maximum thermal protection
0 = junction temperature below 175 °C
1 = junction temperature above 175 °C
5
D5
channel 4 DC load detection
0 = DC load detected
1 = no DC load detected
4
D4
channel 4 AC load detection
0 = no AC load detected
1 = AC load detected
3
D3
channel 4 load short-circuit
0 = normal load
1 = short-circuit load
2
D2
channel 4 output offset
0 = no output offset
1 = output offset
1
D1
channel 4 VP short-circuit
0 = no short-circuit to VP
1 = short-circuit to VP
0
D0
channel 4 short-circuit to ground
0 = no short-circuit to ground
1 = short-circuit to ground
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
18 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 11.
Data byte DB2 bit description
Bit
Symbol
Description
7
D7
Power-on reset occurred or amplifier status
0 = amplifier on
1 = POR has occurred; amplifier off
6
D6
regulator thermal protection pre-warning
0 = no warning
1 = regulator temperature too high; amplifier off
5
D5
channel 3 DC load detection
0 = DC load detected
1 = no DC load detected
4
D4
channel 3 AC load detection
0 = no AC load detected
1 = AC load detected
3
D3
channel 3 load short-circuit
0 = normal load
1 = short-circuit load
2
D2
channel 3 output offset
0 = no output offset
1 = output offset
1
channel 3 VP short-circuit
D1
0 = no short-circuit to VP
1 = short-circuit to VP
0
D0
channel 3 short-circuit to ground
0 = no short-circuit to ground
1 = short-circuit to ground
Table 12.
Data byte DB3 bit description
Bit
Symbol
Description
7
D7
-
6
D6
-
5
D5
channel 2 DC load detection
0 = DC load detected
1 = no DC load detected
4
D4
channel 2 AC load detection
0 = no AC load detected
1 = AC load detected
3
D3
channel 2 load short-circuit
0 = normal load
1 = short-circuit load
2
D2
channel 2 output offset
0 = no output offset
1 = output offset
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
19 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 12.
Data byte DB3 bit description …continued
Bit
Symbol
Description
1
D1
channel 2 VP short-circuit
0 = no short-circuit to VP
1 = short-circuit to VP
0
D0
channel 2 short-circuit to ground
0 = no short-circuit to ground
1 = short-circuit to ground
Table 13.
Data byte DB4 bit description
Bit
Symbol
Description
7
D7
-
6
D6
-
5
D5
channel 1 DC load detection
0 = DC load detected
1 = no DC load detected
4
D4
channel 1 AC load detected
0 = no AC load detected
1 = AC load detected
3
D3
channel 1 load short-circuit
0 = normal load
1 = short-circuit load
2
D2
channel 1 output offset
0 = no output offset
1 = output offset
1
D1
channel 1 short-circuit to VP
0 = no short-circuit to VP
1 = short-circuit to VP
0
D0
channel 1 short-circuit to ground
0 = no short-circuit to ground
1 = short-circuit to ground
9. Limiting values
Table 14. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
VP
supply voltage
operating
-
18
V
not operating
−1
+50
V
jump starts for t ≤ 10
minutes
-
30
V
load dump protection for
t ≤ 50 ms and tr ≥ 2.5 ms
0
50
V
operating
0
7
V
VSDA
voltage on pin SDA
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
20 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 14. Limiting values …continued
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
VSCL
voltage on pin SCL
operating
0
7
V
VI
input voltage
pins INn, SVR, ACGND,
DIAG, operating
0
13
V
VSTB
voltage on pin STB
operating
0
24
V
IOSM
non-repetitive peak output current
-
10
A
IORM
repetitive peak output current
-
6
A
VP(sc)
short-circuit supply voltage
across output pin loads
and to ground or supply
(AC and DC)
-
18
V
VP(r)
reverse supply voltage
voltage regulator only
-
−18
V
Tcase = 70 °C
Ptot
total power dissipation
-
80
W
Tj
junction temperature
-
150
°C
Tstg
storage temperature
−55
+150
°C
Tamb
ambient temperature
°C
VESD
electrostatic discharge voltage
−40
+85
[1]
-
2000
V
[2]
-
200
V
[1]
Human body model: Rs = 1.5 kΩ; C = 100 pF; all pins have passed all tests to 2500 V to guarantee 2000 V, according to class II.
[2]
Machine model: Rs = 10 Ω; C = 200 pF; L = 0.75 mH; all pins have passed all tests to 250 V to guarantee 200 V, according to class II.
10. Thermal characteristics
Table 15.
Thermal characteristics
Symbol
Parameter
Conditions
Typ
Unit
Rth(j-a)
thermal resistance from junction
to ambient
in free air
40
K/W
Rth(j-c)
thermal resistance from junction
to case
see Figure 11
0.75
K/W
Virtual junction
Amplifier
Voltage regulator
0.5 K/W
1 K/W
0.2 K/W
Case
mdb514
Fig 11. Equivalent thermal resistance network
10.1 Quality specification
In accordance with “General Quality Specification for Integrated Circuits SNW-FQ-611D”.
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
21 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
11. Characteristics
Table 16. Characteristics
Tamb = 25 °C; VDCDC; VP = 14.4 V; RL = 4 Ω; measured in the test circuit Figure 26; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
RL = 4 Ω
8
14.4
18
V
RL = 2 Ω
8
14.4
16
V
no load
-
280
400
mA
-
10
50
µA
DC
-
7.2
-
V
6.5
7
8
V
Amplifier
Supply voltage behavior
VP(oper)
operating supply voltage
Iq(tot)
total quiescent current
Istb
standby current
VO
output voltage
VP(low)(mute)
low supply voltage mute
Vhr
headroom voltage
when headroom protection is
activated; see Figure 4
-
1.4
-
V
VPOR
power-on reset voltage
see Figure 13
-
5.5
-
V
VO(offset)
output offset voltage
mute mode and power on
−100
0
+100
mV
Mode select (pin STB)
VSTB
II
voltage on pin STB
input current
Standby mode
-
-
1.3
V
operating mode
2.5
-
5.5
V
mute mode
8
-
VP
V
VSTB = 5 V
-
4
25
µA
Start-up, shutdown and mute timing
twake
wake-up time
from standby before first
I2C-bus transmission is
recognized; via pin STB; see
Figure 12
-
300
500
µs
td(mute_off)
mute off delay time
via I2C-bus IB1[D0];
CSVR = 22 µF; see Figure 12
-
250
-
ms
td(mute-on)
delay time from mute to on
soft mute; via I2C-bus
IB2[D1] = 1 to 0
10
25
40
ms
hard mute; via I2C-bus
IB2[D0] = 1 to 0
10
25
40
ms
via pin STB;
VSTB = 8 V to 4 V
10
25
40
ms
soft mute; via I2C-bus
IB2[D1] = 0 to 1
10
25
40
ms
hard mute; via I2C-bus
IB2[D0] = 0 to 1
-
0.4
1
ms
via pin STB;
VSTB = 4 V to 8 V
-
0.4
1
ms
td(on-mute)
delay time from on to mute
I2C-bus interface
VIL
LOW-level input voltage
on pins SCL and SDA
-
-
1.5
V
VIH
HIGH-level input voltage
on pins SCL and SDA
2.3
-
5.5
V
VOL
LOW-level output voltage
on pin SDA; Iload = 3 mA
-
-
0.4
V
fSCL
SCL clock frequency
-
-
400
kHz
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
22 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 16. Characteristics …continued
Tamb = 25 °C; VDCDC; VP = 14.4 V; RL = 4 Ω; measured in the test circuit Figure 26; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fault condition (pin LOW);
IDIAG_N = 200 µA
-
-
0.8
V
±1.5
±2
±2.5
V
Amplifier diagnostics
VOL(DIAG_N)
LOW-level output voltage on pin DIAG
VO(offset)
output offset voltage
THDclip
total harmonic distortion clip detection
level
IB3[D7] = 0
-
3
-
%
IB3[D7] = 1
-
1
-
%
pre-warning average junction
temperature
IB3[D4] = 0
135
145
155
°C
IB3[D4] = 1
112
122
132
°C
Tj(AV)(mute)
mute average junction temperature
VIN = 0.05 V; −3 dB muting
150
160
170
°C
Tj(AV)(off)
average junction temperature for off
all outputs switched off
165
175
185
°C
ZL
load impedance
DC load detected
-
-
6
Ω
no DC load detected
500
-
-
Ω
AC load detected
550
-
-
mA
no AC load detected
-
-
150
mA
RL = 4 Ω; VP = 14.4 V;
THD = 0.5 %
18
19
-
W
RL = 4 Ω; VP = 14.4 V;
THD = 10 %
25
26
-
W
RL = 2 Ω; VP = 14.4 V;
THD = 0.5 %
27
31
-
W
RL = 2 Ω; VP = 14.4 V;
THD = 10 %
40
44
-
W
RL = 4 Ω; VP = 14.4 V;
VIN = 2 V RMS square wave
39
41
-
W
RL = 4 Ω; VP = 15.2 V;
VIN = 2 V RMS square wave
44
46
-
W
RL = 2 Ω; VP = 14.4 V;
VIN = 2 V RMS square wave
64
69
-
W
Po = 1 W to 12 W; f = 1 kHz;
RL = 4 Ω
-
0.01
0.1
%
Po = 1 W to 12 W; f = 10 kHz
-
0.2
0.5
%
Po = 4 W; f = 1 kHz
-
0.01
0.03
%
line driver mode;
Vo = 2 V (RMS); f = 1 kHz;
RL = 600 Ω
-
0.01
0.03
%
f = 1 Hz to 10 kHz;
Rs = 600 Ω
50
60
-
dB
Tj(AV)(pwarn)
Idet(load)
load detection current
Amplifier
Po
Po(max)
THD
output power
maximum output power
total harmonic distortion
αcs
channel separation
Po = 4 W; f = 1 kHz
-
80
-
dB
SVRR
supply voltage rejection ratio
f = 100 Hz to 10 kHz;
Rs = 600 Ω
55
70
-
dB
CMRR
common mode rejection ratio
amplifier mode;
Vcm = 0.3 V (p-p);
f = 1 kHz to 3 kHz; Rs = 0 Ω
40
70
-
dB
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
23 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 16. Characteristics …continued
Tamb = 25 °C; VDCDC; VP = 14.4 V; RL = 4 Ω; measured in the test circuit Figure 26; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
-
-
0.6
V
line driver mode
-
25
35
µV
amplifier mode
-
50
70
µV
Vcm(max)(rms) maximum common mode voltage (rms f = 1 kHz
value)
Vn(o)
output noise voltage
filter 20 Hz to 22 kHz;
Rs = 600 Ω
Gv(amp)
voltage gain amplifier mode
single-ended in to differential
out
25
26
27
dB
Gv(ld)
voltage gain line driver mode
single-ended in to differential
out
19
20
21
dB
Zi
input impedance
Cin = 220 nF
55
70
-
kΩ
αmute
mute attenuation
VO(on)/Vo(mute)
80
90
-
dB
Vo(mute)
mute output voltage
Vi = 1 V RMS
-
70
-
µV
Bp
power bandwidth
−1 dB; THD = 1 %
-
20
-
kHz
regulator 1, 3, 4 and 5 on;
switches 1 and 2 on
10.0
14.4
18
V
standby regulator 2 in
regulation
5.0
-
50
V
standby regulator 6 in
regulation
6.0
-
50
V
regulator 1, 3, 4 and 5 on;
switches 1 and 2 on
18.1
22
-
V
4.75
5.0
VP
V
-
180
250
µA
IB2[D3:D2] = 01
7.9
8.3
8.7
V
IB2[D3:D2] = 10
8.1
8.6
9.1
V
Voltage regulators
VP
supply voltage
Vth(dis)
disable threshold voltage
VDCDC
DC-to-DC converter voltage
Iq(tot)
total quiescent current
Standby mode; VP = 14.4 V
[1]
Regulator 1 audio supply: pin REG1; IO = 5 mA unless otherwise specified
VO(reg)
regulator output voltage
0.5 mA ≤ IO ≤ 400 mA;
10 V < VP < 18 V
IB2[D3:D2] = 11
4.75
5.0
5.25
V
50
60
-
dB
IO = 300 mA
-
0.5
0.8
V
IO = 400 mA
-
0.7
1.2
V
400
700
-
mA
100
200
-
mA
10 V ≤ VP ≤ 18 V
-
-
50
mV
5 mA ≤ IO ≤ 400 mA
-
-
100
mV
SVRR
supply voltage rejection ratio
fripple = 120 Hz;
Vripple = 2 V (p-p)
Vdo
dropout voltage
VP = 7 V; IB2[D3:D2] = 01
IO
IOS
[3]
output current
VO ≥ 4 V
[4]
output short-circuit current
RL ≤ 0.5 Ω
[5]
Line regulation
∆VO
output voltage variation
Load regulation
∆VO
output voltage variation
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
24 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 16. Characteristics …continued
Tamb = 25 °C; VDCDC; VP = 14.4 V; RL = 4 Ω; measured in the test circuit Figure 26; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Regulator 2 microprocessor supply: pin REG2; IO = 5 mA unless otherwise specified
VO(reg)
regulator output voltage
0.5 mA ≤ IO ≤ 350 mA;
10 V ≤ VP ≤ 18 V
3.1
3.3
3.5
V
SVRR
supply voltage rejection ratio
fripple = 120 Hz;
Vripple = 2 V (p-p)
40
50
-
dB
Vdo
dropout voltage
VBUCAP = 4.75 V
-
1.45
2.0
V
IO
output current
VO ≥ 2.8 V
[4]
350
1000
-
mA
output short-circuit current
RL ≤ 0.5 Ω
[5]
160
300
-
mA
50
mV
[6][8]
IO = 350 mA
IOS
Line regulation
∆VO
output voltage variation
10 V ≤ VP ≤ 18 V
-
0.5 mA ≤ IO ≤ 350 mA
-
-
100
mV
3.1
3.3
3.5
V
50
65
-
dB
Load regulation
∆VO
output voltage variation
Regulator 3 mechanical digital supply: pin REG3; IO = 5 mA unless otherwise specified
VO(reg)
regulator output voltage
0.5 mA ≤ IO ≤ 525 mA;
10 V ≤ VP ≤ 18 V
[9]
5 V ≤ VDCDC ≤ 18 V
SVRR
supply voltage rejection ratio
fripple = 120 Hz;
Vripple = 2 V (p-p)
Vdo
dropout voltage
VDCDC = 4.75 V; IO = 525 mA
output current
output short-circuit current
IO
IOS
[2][8]
-
1.45
2.0
V
VO ≥ 2.8 V
[4]
525
900
-
mA
RL ≤ 0.5 Ω
[5]
180
350
-
mA
5 V ≤ VDCDC ≤ 18 V
-
3
50
mV
0.5 mA ≤ IO ≤ 525 mA
-
-
100
mV
IB2[D7:D5] = 001
4.75
5.0
5.25
V
IB2[D7:D5] = 010
5.7
6.0
6.3
V
IB2[D7:D5] = 011
6.6
7.0
7.4
V
IB2[D7:D5] = 100
8.1
8.6
9.1
V
Line regulation
∆VO
output voltage variation
Load regulation
∆VO
output voltage variation
Regulator 4 mechanical drive supply: pin REG4; IO = 5 mA unless otherwise specified
VO(reg)
regulator output voltage
0.5 mA ≤ IO ≤ 800 mA;
10 V ≤ VP ≤ 18 V
IB2[D7:D5] = 101
7.6
8.0
8.4
V
50
65
-
dB
IO = 500 mA
-
0.5
0.8
V
IO = 800 mA
-
0.7
1.2
V
1
1.5
-
A
1.5
2
-
A
SVRR
supply voltage rejection ratio
fripple = 120 Hz;
Vripple = 2 V (p-p)
Vdo
dropout voltage
VP = 7 V; IB2[D7:D5] = 011
IOM
IO
peak output current
T ≤ 3 s; VO = 4 V
output current
VO ≥ 4 V; T ≤ 100 ms;
VP ≥ 11.5 V
TDF8551J_2
Product data sheet
[3]
[4]
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
25 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 16. Characteristics …continued
Tamb = 25 °C; VDCDC; VP = 14.4 V; RL = 4 Ω; measured in the test circuit Figure 26; unless otherwise specified.
Symbol
IOS
Parameter
Conditions
Min
Typ
Max
Unit
output short-circuit current
RL ≤ 0.5 Ω
240
400
-
mA
10 V ≤ VP ≤ 18 V
-
3
50
mV
0.5 mA ≤ IO ≤ 800 mA
-
-
100
mV
10 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 0001
5.7
6.0
6.3
V
10 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 0010
6.65
7.0
7.37
V
10 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 0011
7.8
8.2
8.6
V
10.5 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 0100
8.55
9.0
9.45
V
11 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 0101
9.0
9.5
10.0
V
11.5 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 0110
9.5
10.0
10.5
V
13 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 0111
9.9
10.4
10.9
V
14.2 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 1000
11.8
12.5
13.2
V
12.5 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 1001
VP − 1 VP − 0.5 -
V
10 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 1010
4.75
5.0
5.25
V
10 V ≤ VP ≤ 18 V;
IB1[D7:D4] = 1011
3.1
3.3
3.5
V
50
60
-
dB
-
0.5
0.8
V
[5]
Line regulation
∆VO
output voltage variation
Load regulation
∆VO
output voltage variation
Regulator 5 display supply: pin REG5; IO = 5 mA unless otherwise specified
VO(reg)
regulator output voltage
0.5 mA ≤ IO ≤ 400 mA
SVRR
supply voltage rejection ratio
fripple = 120 Hz;
Vripple = 2 V (p-p)
Vdo
dropout voltage
VP = 7 V; IB1[D7:D4] = 0010
[3]
IO = 300 mA
IO = 400 mA
-
0.7
1.2
V
400
900
-
mA
150
300
-
mA
10 V ≤ VP ≤ 18 V
-
3
50
mV
0.5 mA ≤ IO ≤ 400 mA
-
-
100
mV
4.75
5.0
5.25
V
IO
output current
VO ≥ 2.8 V
[4]
IOS
output short-circuit current
RL ≤ 0.5 Ω
[5]
Line regulation
∆VO
output voltage variation
Load regulation
∆VO
output voltage variation
Regulator 6 bus control supply: pin REG6; IO = 5 mA unless otherwise specified
VO(reg)
regulator output voltage
0.5 mA ≤ IO ≤ 100 mA;
10 V ≤ VP ≤ 18 V
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
26 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
Table 16. Characteristics …continued
Tamb = 25 °C; VDCDC; VP = 14.4 V; RL = 4 Ω; measured in the test circuit Figure 26; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
SVRR
supply voltage rejection ratio
fripple = 120 Hz;
Vripple = 2 V (p-p)
40
50
-
dB
Vdo
dropout voltage
VP = 4.75 V; IO = 100 mA
[3]
-
0.4
0.8
V
IO
output current
VO > 4.0 V
[4]
150
350
-
mA
output short-circuit current
RL < 0.5 Ω
[5]
50
125
-
mA
10 V ≤ VP ≤ 18 V
-
3
50
mV
0.5 mA ≤ IO ≤ 100 mA
-
-
100
mV
IO = 300 mA
-
0.6
0.8
V
IO = 400 mA
-
0.6
1.1
V
IOS
Line regulation
∆VO
output voltage variation
Load regulation
∆VO
output voltage variation
Power switch 1 antenna: pin SW1
dropout voltage
Vdo
IO
IOS
output current
VO ≥ 8.5 V
[4]
0.5
1
-
A
output short-circuit current
RL ≤ 0.5 Ω
[5]
-
250
-
mA
VO = 18 V; VP = 0 V
[7]
-
25
250
µA
-
0.6
0.8
V
-
0.6
1.1
V
leakage current
IL
Power switch 2 amplifier: pin SW2
dropout voltage
Vdo
IO = 300 mA
IO = 400 mA
IO
output current
VO ≥ 8.5 V
[4]
0.5
1
-
A
IOS
output short-circuit current
RL ≤ 0.5 Ω
[5]
-
250
-
mA
VO = 18 V; VP = 0 V
[7]
-
25
250
µA
leakage current
IL
Backup switch
Ibu
backup current (DC)
VBUCAP ≥ 6 V
0.4
1.5
-
A
VCL
clamping voltage
VP = 30 V; IO(reg2) = 100 mA
-
24
28
V
Vdo
dropout voltage
IO = 500 mA; (VP − VBUCAP)
-
0.8
1.2
V
[1]
The quiescent current is measured in Standby mode when RL = ∞.
[2]
The dropout voltage of regulator 3 is the voltage difference between VDCDC and VO(reg).
[3]
The dropout voltage of a regulator is the voltage difference between VP and VO(reg).
[4]
At current limit, VO(reg) is held constant; see Figure 6.
[5]
The foldback current protection limits the dissipation power at short-circuit; see Figure 6.
[6]
The dropout voltage of regulator 2 is the voltage difference between VBUCAP and VO(reg).
[7]
Unbiased switch-supply IL is measured in supply line VP.
[8]
Regulator output still in regulation at applied test voltage, therefore the actual dropout voltage can not be measured.
[9]
The current capability of regulator 3 is sufficient to drive NXP Semiconductors’ DSP devices SAF7730, SAF7740 or SAF7741.
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
27 of 47
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx
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NXP Semiconductors
TDF8551J_2
Product data sheet
VP
DIAG
VREG3
Regulator switched off
when amplifier is
completely muted
Rev. 02 — 18 August 2009
Amplifier status
DB2[D7]
IB1[D0]
IB2[D4]
twake
SVR
td(mute-off)
Soft
mute
Soft
mute
28 of 47
© NXP B.V. 2009. All rights reserved.
001aak093
Fig 12. Start-up and shutdown timing
TDF8551J
Amplifier
output
4 × 45 W power amplifier with six voltage regulators
STB
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
VO
(V)
Headroom protection activated:
1) fast mute
2) discharge of SVR
VP
14.4
Low VP mute activated
8.8
Output
voltage
Headroom voltage
8.6
7.2
Low VP mute released
SVR voltage
3.5
DIAG
DB2[D7]
VREG3
001aak094
Fig 13. Low supply voltage behavior at VP > 5.5 V
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
29 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
VO
(V)
VP
14.4
Low VP mute activated
POR activated
8.8
8.6
7.2
5.5
3.5
SVR voltage
DIAG
POR has occurred
DB2[D7]
VREG3
001aak095
Fig 14. Low supply voltage behavior at VP < 5.5 V
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
30 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
mrc339
102
THD
(%)
10
1
(1)
10−1
(2)
10−2
(3)
(4)
10−3
10−2
10−1
1
102
10
Po (W)
(1) f = 10 kHz (channels 1 to 4).
(2) f = 100 Hz and 1 kHz (channels 1 and 2).
(3) f = 1 kHz (channels 3 and 4).
(4) f = 100 Hz (channels 3 and 4).
VP = 14.4 V.
RL = 4 Ω.
Fig 15. Total harmonic distortion as a function of output power
mrc344
10
THD
(%)
1
10−1
10−2
(1)
(2)
10−3
10−2
10−1
1
102
10
f (kHz)
(1) Po = 1 W.
(2) Po = 10 W.
VP = 14.4 V.
RL = 4 Ω.
Fig 16. Total harmonic distortion as a function of frequency
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
31 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
mrc337
1
THD
(%)
10−1
10−2
10−3
10−1
1
102
10
Vo(rms) (V)
VP = 14.4 V.
RL = 600 Ω.
f = 1 kHz.
Fig 17. Total harmonic distortion as a function of output voltage in balanced line driver
mode
mrc346
30
Po
(W)
(1)
25
(2)
20
15
10−2
(3)
10−1
1
102
10
f (kHz)
VP = 14.4 V; RL = 4 Ω
(1) THD = 10 %.
(2) THD = 5 %.
(3) THD = 0.5 %.
Fig 18. Output power as a function of frequency
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
32 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
mrc347
45
(1)
Po
(W)
40
(2)
35
(3)
30
25
10−2
10−1
1
102
10
f (kHz)
VP = 14.4 V; RL = 2 Ω
(1) THD = 10 %.
(2) THD = 5 %.
(3) THD = 0.5 %.
Fig 19. Output power as a function of frequency
001aaj118
100
Po
(W)
80
60
(1)
40
(2)
(3)
20
0
8
10
12
14
16
18
20
VP (V)
f = 1 kHz; RL = 4 Ω
(1) Maximum power.
(2) THD = 10 %.
(3) THD = 0.5 %.
Fig 20. Output power as a function of supply voltage
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
33 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
mrc334
100
Po
(W)
80
(1)
60
(2)
40
(3)
20
0
8
10
12
14
16
18
20
Vp (V)
f = 1 kHz; RL = 2 Ω
(1) Maximum power.
(2) THD = 10 %.
(3) THD = 0.5 %.
Fig 21. Output power as a function of supply voltage
mrc341
84
SVRR
(dB)
(1)
76
(2)
68
60
10−1
1
10
f (kHz)
(1) Operating mode.
(2) Mute mode.
VP = 14.4 V.
RL = 4 Ω.
Vripple = 2 V (p-p).
Rs = 600 Ω.
Fig 22. Supply voltage rejection ratio as a function of frequency
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
34 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
mrc338
100
αcs
(dB)
90
80
70
60
50
10−2
10−1
1
102
10
f (kHz)
VP = 14.4 V.
RL = 4 Ω.
Po = 4 W.
Rs = 600 Ω.
Fig 23. Channel separation
mrc342
50
Ptot
(W)
40
30
20
10
0
0
10
20
30
Po (W)
VP = 14.4 V.
RL = 4 Ω.
f = 1 kHz.
Fig 24. Amplifier power dissipation as a function of output power; all channels driven
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
35 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
mrc343
100
η
(%)
80
60
40
20
0
0
8
16
24
32
40
Po (W)
VP = 14.4 V.
RL = 4 Ω.
f = 1 kHz.
Fig 25. Amplifier efficiency as a function of output power; all channels driven
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
36 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
12. Application information
28 REG6
REGULATOR 6
bus controller
10 µF
(50 V)
BUCAP
37 REG2
REGULATOR 2
1000 µF
(16 V)
36
220 nF
VP
220 µF
(16 V)
35
100 nF
TEMPERATURE AND
LOAD DUMP
PROTECTION VOLTAGE
REGULATOR
REFERENCE
VOLTAGE
30 REG1
REGULATOR 1
audio
10 µF
(50 V)
220 nF
VDCDC
14.4 V/5 V
microcontroller
10 µF
(50 V)
BACKUP
SWITCH
14.4 V
100 nF
mechanical
digital
31 REG3
REGULATOR 3
26
100 nF
10 µF
(50 V)
(1)
ENABLE
LOGIC
100 nF
mechanical
drive
33 REG4
REGULATOR 4
10 µF
(50 V)
100 nF
34 REG5
REGULATOR 5
display
10 µF
(50 V)
SWITCH 1
100 nF
29 SW1
amplifiers
10 µF
(50 V)
SWITCH 2
100 nF
27 SW2
aerial
motor
10 µF
(50 V)
SDA
SCL
STB
32 GND
20 VP1
2
25 DIAG
I2C-BUS
INTERFACE
STANDBY/MUTE
14.4 V
6 VP2
TDF8551J
4
22
100 nF
CLIP DETECT/DIAGNOSTIC
10 kΩ
220
nF
(1)
220
nF
2200 µF
(16 V)
microcontroller
Rs
IN1
MUTE
11
26 dB/
20 dB
470 nF
9
OUT1+
7
OUT1−
17
OUT2+
19
OUT2−
5
OUT3+
3
OUT3−
21
OUT4+
23
OUT4−
PROTECTION/
DIAGNOSTIC
Rs
IN2
MUTE
15
26 dB/
20 dB
470 nF
PROTECTION/
DIAGNOSTIC
Rs
IN3
MUTE
12
26 dB/
20 dB
470 nF
PROTECTION/
DIAGNOSTIC
Rs
IN4
470 nF
MUTE
14
26 dB/
20 dB
VP
PROTECTION/
DIAGNOSTIC
TEMPERATURE AND
LOAD DUMP
PROTECTION AMPLIFIER
22 µF
10
13
SVR
SGND
2.2 µF
(4 × 470 nF)
16
8
ACGND
PGND1 PGND2/TAB PGND3 PGND4
1
18
24
001aaj104
(1) See Section 12.1.
The value of ACGND capacitor must be close to 4 × the value of capacitor connected to the positive input of each channel; for
EMC reasons a 10 nF capacitor can be connected between each amplifier output and ground.
Fig 26. Test and application diagram of TDF8551J
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
37 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
12.1 Supply decoupling
See Figure 26 to Figure 30.
The high frequency 220 nF decoupling capacitors connected to power supply voltage
pins 6 and 20 should be located as close as possible to these pins.
It is important to use good quality capacitors. These capacitors should be able to
suppress high voltage peaks that can occur on the power supply if several audio channels
are accidentally shorted to the power supply simultaneously, due to the activation of
current protection. Good results have been achieved using 0805 case-size capacitors
(X7R material, 220 nF) located close to power supply voltage pins 6 and 20.
If a DC-to-DC converter is used to supply regulator 3, the recommendations of the
converter manufacturer relating to decoupling must be followed.
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
38 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
001aai763
Fig 27. Printed-circuit board layout of test and application circuit showing top copper layer viewed from top
001aai762
Fig 28. Printed-circuit board layout of test and application circuit showing bottom copper layer viewed from top
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
39 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
001aai764
Fig 29. Printed-circuit board layout of test and application circuit showing components and top copper layout
viewed from top
001aai765
Fig 30. Printed-circuit board layout of test and application circuit showing components and bottom copper
layout viewed from top
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
40 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
12.2 Beep input circuit
Beep input circuit to amplify the beep signal from the microcontroller to all 4 amplifiers
(gain = 0 dB). Note that this circuit will not affect amplifier performance.
TDF8551J
ACGND
2.2 µF
From
microcontroller
1.7 kΩ
0.22 µF
100 Ω
47 pF
001aaj150
Fig 31. Application diagram for beep input
12.3 Noise
The outputs of regulators 1 to 6 are designed to give very low noise with good stability.
The noise output voltage depends on output capacitor Co. Table 17 shows the effect of the
output capacitor on the noise figure.
Table 17.
Regulator
Regulator noise figures
Noise figure (µV) [1]
Co = 10 µF
Co = 47 µF
Co = 100 µF
1
225
180
145
2
700
600
390
3
100
85
65
4
235
205
175
5
315
285
225
6
710
550
340
[1]
Measured in the frequency range 20 Hz to 80 kHz; at IO(reg) = 10 mA.
12.4 Stability
The regulators are made stable by connecting capacitors to the regulator outputs. The
stability can be guaranteed with almost any output capacitor if its Equivalent Series
Resistance (ESR) stays below the ESR curve shown in Figure 32. If an electrolytic
capacitor is used, its behavior with temperature can cause oscillations at extremely low
temperature. Oscillation problems can be avoided by adding a 47 nF capacitor in parallel
with the electrolytic capacitor. The following example describes how to select the value of
output capacitor.
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
41 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
12.4.1 Example regulator 2
Regulator 2 is stabilized with an electrolytic output capacitor of 10 µF which has an ESR
of 4 Ω. At Tamb = −30 °C the capacitor value decreases to 3 µF and its ESR increases to
28 Ω which is above the maximum allowed as shown in Figure 32, and which will make
the regulator unstable. To avoid problems with stability at low temperatures, the
recommended solution is to use tantalum capacitors. Either use a tantalum capacitor of
10 µF, or an electrolytic capacitor with a higher value.
20
ESR
(Ω)
15
maximum ESR
10
5
stable region
0
0.1
1
10
C (µF)
100 mgl912
Fig 32. Curve for selecting the value of output capacitors for regulators 1 to 6
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
42 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
13. Package outline
DBS37P: plastic DIL-bent-SIL power package; 37 leads (lead length 6.8 mm)
SOT725-1
non-concave
Dh
x
D
Eh
view B: mounting base side
A2
d
B
j
E
A
L4
L3
L
1
L2
37
e1
Z
w M
bp
e
c
Q
v M
e2
m
0
10
20 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
A2
mm
19
4.65 0.60
4.35 0.45
bp
c
0.5
0.3
D(1)
d
42.2 37.8
41.7 37.4
Dh
E(1)
e
e1
e2
Eh
j
L
L2
12
15.9
15.5
2
1
4
8
3.4
3.1
6.8
3.9
3.1
L3
L4
1.15 22.9
0.85 22.1
m
Q
v
4
2.1
1.8
0.6
w
x
0.25 0.03
Z(1)
3.30
2.65
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
JEITA
SOT725-1
---
---
---
EUROPEAN
PROJECTION
ISSUE DATE
01-11-14
02-11-22
Fig 33. Package outline SOT725-1 (DBS37P)
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
43 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
14. Soldering of through-hole mount packages
14.1 Introduction to soldering through-hole mount packages
This text gives a very brief insight into wave, dip and manual soldering.
Wave soldering is the preferred method for mounting of through-hole mount IC packages
on a printed-circuit board.
14.2 Soldering by dipping or by solder wave
Driven by legislation and environmental forces the worldwide use of lead-free solder
pastes is increasing. Typical dwell time of the leads in the wave ranges from
3 seconds to 4 seconds at 250 °C or 265 °C, depending on solder material applied, SnPb
or Pb-free respectively.
The total contact time of successive solder waves must not exceed 5 seconds.
The device may be mounted up to the seating plane, but the temperature of the plastic
body must not exceed the specified maximum storage temperature (Tstg(max)). If the
printed-circuit board has been pre-heated, forced cooling may be necessary immediately
after soldering to keep the temperature within the permissible limit.
14.3 Manual soldering
Apply the soldering iron (24 V or less) to the lead(s) of the package, either below the
seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is
less than 300 °C it may remain in contact for up to 10 seconds. If the bit temperature is
between 300 °C and 400 °C, contact may be up to 5 seconds.
14.4 Package related soldering information
Table 18.
Suitability of through-hole mount IC packages for dipping and wave soldering
Package
Soldering method
Dipping
Wave
CPGA, HCPGA
-
suitable
DBS, DIP, HDIP, RDBS, SDIP, SIL
suitable
suitable[1]
PMFP[2]
-
not suitable
[1]
For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit
board.
[2]
For PMFP packages hot bar soldering or manual soldering is suitable.
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
44 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
15. Abbreviations
Table 19.
Abbreviations
Acronym
Description
BCDMOS
Bipolar Complementary Double-diffused Metal-Oxide Semiconductor
DSP
Digital Signal Processor
EMC
ElectroMagnetic Compatibility
LSB
Least Significant Bit
MSB
Most Significant Bit
POR
Power-On Reset
16. Revision history
Table 20.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
TDF8551J_2
20090818
Product data sheet
-
TDF8551J_1
Modifications:
TDF8551J_1
•
Table 16 “Characteristics” changed minimum output current (IO) regulator 3 pin REG3.
20081202
Preliminary data sheet
TDF8551J_2
Product data sheet
-
-
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
45 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
17. Legal information
17.1 Data sheet status
Document status[1][2]
Product status[3]
Definition
Objective [short] data sheet
Development
This document contains data from the objective specification for product development.
Preliminary [short] data sheet
Qualification
This document contains data from the preliminary specification.
Product [short] data sheet
Production
This document contains the product specification.
[1]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term ‘short data sheet’ is explained in section “Definitions”.
[3]
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
17.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
17.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, NXP Semiconductors does not give any representations or
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.nxp.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by NXP Semiconductors. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from national authorities.
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
17.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
I2C-bus — logo is a trademark of NXP B.V.
18. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
TDF8551J_2
Product data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 18 August 2009
46 of 47
TDF8551J
NXP Semiconductors
4 × 45 W power amplifier with six voltage regulators
19. Contents
1
1.1
1.2
2
3
4
5
6
7
7.1
7.2
8
8.1
8.2
8.3
8.4
8.5
8.5.1
8.5.2
8.5.3
8.5.4
8.5.5
8.5.6
8.5.7
8.5.7.1
8.5.7.2
8.5.7.3
8.5.8
8.6
8.6.1
8.6.2
8.6.3
8.6.4
8.6.5
8.6.6
8.6.7
8.7
9
10
10.1
11
12
12.1
12.2
12.3
12.4
General description . . . . . . . . . . . . . . . . . . . . . . 1
Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Voltage regulators and switches . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Quick reference data . . . . . . . . . . . . . . . . . . . . . 2
Ordering information . . . . . . . . . . . . . . . . . . . . . 4
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pinning information . . . . . . . . . . . . . . . . . . . . . . 6
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7
Functional description . . . . . . . . . . . . . . . . . . . 8
Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Start-up and shutdown timing. . . . . . . . . . . . . . 8
Power-on reset and supply voltage spikes . . . . 8
Diagnostic output . . . . . . . . . . . . . . . . . . . . . . . 8
Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Temperature protection. . . . . . . . . . . . . . . . . . . 9
Offset detection. . . . . . . . . . . . . . . . . . . . . . . . . 9
Speaker protection . . . . . . . . . . . . . . . . . . . . . . 9
Line driver mode . . . . . . . . . . . . . . . . . . . . . . . . 9
Input and AC ground capacitor values . . . . . . . 9
Load detection . . . . . . . . . . . . . . . . . . . . . . . . 10
DC load detection . . . . . . . . . . . . . . . . . . . . . . 10
AC load detection . . . . . . . . . . . . . . . . . . . . . . 10
Load detection procedure . . . . . . . . . . . . . . . . 11
Low headroom protection . . . . . . . . . . . . . . . . 11
Voltage regulators and switches . . . . . . . . . . . 11
Standby regulator outputs. . . . . . . . . . . . . . . . 12
Backup capacitor . . . . . . . . . . . . . . . . . . . . . . 12
Backup function . . . . . . . . . . . . . . . . . . . . . . . 12
Power switches . . . . . . . . . . . . . . . . . . . . . . . . 13
External DC-to-DC converter . . . . . . . . . . . . . 13
Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Temperature protection. . . . . . . . . . . . . . . . . . 13
I2C-bus specification . . . . . . . . . . . . . . . . . . . . 14
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 20
Thermal characteristics. . . . . . . . . . . . . . . . . . 21
Quality specification . . . . . . . . . . . . . . . . . . . . 21
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 22
Application information. . . . . . . . . . . . . . . . . . 37
Supply decoupling . . . . . . . . . . . . . . . . . . . . . 38
Beep input circuit . . . . . . . . . . . . . . . . . . . . . . 41
Noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
12.4.1
Example regulator 2 . . . . . . . . . . . . . . . . . . . .
13
Package outline . . . . . . . . . . . . . . . . . . . . . . . .
14
Soldering of through-hole mount packages .
14.1
Introduction to soldering through-hole mount
packages . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14.2
Soldering by dipping or by solder wave . . . . .
14.3
Manual soldering . . . . . . . . . . . . . . . . . . . . . .
14.4
Package related soldering information . . . . . .
15
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . .
16
Revision history . . . . . . . . . . . . . . . . . . . . . . .
17
Legal information . . . . . . . . . . . . . . . . . . . . . .
17.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . .
17.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . .
17.3
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . .
17.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . .
18
Contact information . . . . . . . . . . . . . . . . . . . .
19
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42
43
44
44
44
44
44
45
45
46
46
46
46
46
46
47
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2009.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 18 August 2009
Document identifier: TDF8551J_2