Panasonic AN7555NZ Btl output power ic for car audio Datasheet

ICs for Audio Common Use
AN7555NZ
BTL output power IC for car audio
■ Overview
31.0±0.3
27.0±0.3
21.0±0.1
(10.50) (10.50)
25
1.27
0.6 +0.2
–0.1
(5.08)
(4.29)
(3.30)
(5.70)
2.4±0.5
18.75±0.30
(24.45)
14.5±0.3
15.5±0.3
1
0.40 +0.15
–0.05
(2.15)
(1.26)
1.5±0.1
33.0±0.3
33.36±0.30
Seating plane
(1.95)
R1.8±0.1
4.5±0.2
φ3.6±0.1
3.75±0.10
Unit: mm
3.6±0.1
The AN7555NZ is an audio power IC developed as
the sound output of car audio (35 W × 4-channel). It has
realized the voltage gain of 40 dB based on the AN7560Z
(voltage gain: 34 dB). A capacitor and resistor to stop
oscillation are built in between the output pin and GND so
that a space saving of set is possible. Also, it incorporates a perfect muting circuit without shock noise, so that
a shock noise design under the set transient condition
can be made easily when used together with its standby
function. In addition, it incorporates various protection
circuits to protect the IC from destruction by GND-open
short circuit to ground, and power supply surge which are
the important subject of power IC protection. This IC
will largely contribute to a high reliability design of the
equipment.
HZIP025-P-0980
■ Features
• A pattern layout in which input and output pattern do
not intersect each other on single-sided printed circuit
board is possible.
• Incorporating various protection circuits (temperature
protection, short circuit to VCC , VCC-open short circuit
to VCC , short circuit to GND, GND-open short circuit to
GND, overvoltage, power supply surge, and ASO, etc.)
• Built-in standby function (shock-noise free at STB-on/
off)
• Built-in muting function (shock-noise free at Mute-on/
off)
• External components reduction
• Provided with beep sound input pin
• Equipped with auxiliary sound input pin
• Voltage gain: 40 dB
(AN7560Z/AN7561Z: Voltage gain: 34 dB)
■ Applications
• Car stereo, miniature audio component, karaoke and
other audio equipment
1
AN7555NZ
ICs for Audio Common Use
25
19
VCC
12
4
21
VCC
■ Block Diagram
16
Ripple
filter
1
2
GND (output)
3
9
8
GND (output)
11
Protection
circuit
Beep
input
5
6
GND (output)
7
13
14
GND (output)
15
Attenuation
control
AUX
input
22
GND (sub)
17
Attenuator
AUX
Muting
10
24
18
Beep
GND (input)
20
23
Attenuator
■ Pin Descriptions
Pin No.
Description
Pin No.
Description
1
Ch.4 + output
14
GND (ch.1 output)
2
GND (ch.4 output)
15
Ch.1 − output
3
Ch.4 − output
16
Standby
4
Supply voltage VCC
17
Ch.1 input
5
Ch.3 + output
18
Beep input
6
GND (ch.3 output)
19
Ch.2 input
7
Ch.3 − output
20
GND (input)
8
GND (ch.3 output)
21
Ch.4 input
9
Ch.2 + output
22
GND (printed circuit board)
10
AUX input
23
Ch.3 input
11
Ch.2 − output
24
Muting
12
Supply voltage Vcc
25
Ripple filter
13
Ch.1 + output
Note) It is not necessary to connect capacitor and resistor for stopping the oscillation at the output terminals.
Use them after check if necessary for noise countermeasure.
2
ICs for Audio Common Use
AN7555NZ
■ Absolute Maximum Ratings
Parameter
Supply voltage
Symbol
Rating
Unit
VCC
25
V
Vsurge
65
V
ICC
12
A
PD
59
W
Topr
−30 to +85
°C
Tstg
−55 to +150
°C
*2
Peak supply voltage
*3
Supply current
Power dissipation
*4
Operating ambient temperature
Storage temperature
Note) *1 :
*2 :
*3 :
*4 :
*1
*1
Ta = 25°C except operating ambient temperature and storage temperature.
Without signal
Time = 0.2 s
Power dissipation at Ta = 85°C
■ Recommended Operating Range
Parameter
Supply voltage
Symbol
Range
Unit
VCC
8.0 to 18.0
V
■ Electrical Characteristics at VCC = 13.2 V, f = 1 kHz, Ta = 25°C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
ICQ
Rg = 10 kΩ, RL = 4 Ω

300
450
mA
ISTB
Rg = 10 kΩ, RL = 4 Ω

1
10
µA
VNO
Rg = 10 kΩ, RL = 4 Ω

0.25
0.5
mV[rms]
GV
VIN = 20 mV, RL = 4 Ω
38
40
42
dB
THD1
VIN = 20 mV, RL = 4 Ω

0.05
0.2
%
PO
THD = 10%, RL = 4 Ω
16
19.5

W
RR
RL = 4 Ω, Rg = 10 kΩ, VR = 1 V[rms],
fR = 1 kHz
55
65

dB
Channel balance
CB
VIN = 20 mV, RL = 4 Ω

0
1
dB
Cross-talk
CT
VIN = 20 mV, RL = 4 Ω, Rg = 10 kΩ
60
70

dB
−300
0
300
mV
Quiescent current
Standby current
Output noise voltage
*1
Voltage gain
Total harmonic distortion 1
Maximum output power
Ripple rejection
*1
Output offset voltage
Muting effect
*1
Input impedance
Shock noise
*2
VOFF
Rg = 10 kΩ, RL = 4 Ω
MT
VIN = 20 mV, RL = 4 Ω
70
80

dB
ZI
VIN = ±0.3 VDC
24
30
36
kΩ
VS
RL = 4 Ω, Rg = 10 kΩ, VMUTE = 5 V,
VSTB = on/off, 50 Hz HPF
−100
0
100 mV[p-0]
Note) *1 : Measurement using a bandwidth 15 Hz to 30 kHz (12 dB/OCT) filter.
*2 : Change over the standby terminal at the time shown in the right.
5V
Standby terminal voltage
0V
500 ms
500 ms
3
AN7555NZ
ICs for Audio Common Use
■ Electrical Characteristics at VCC = 13.2 V, f = 1 kHz, Ta = 25°C (continued)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Total harmonic distortion 2
THD2
VIN = 10 mV, fIN = 20 kHz, Rg = 10 Ω,
RL = ∞

0.1
0.5
%
Mute-on threshold voltage
MTON
VIN = 20 mV, RL = 4 Ω
4


V
Mute-off threshold voltage
MTOFF
VIN = 20 mV, RL = 4 Ω


0.8
V
VIN = 20 mV, RL = 4 Ω,
GV = −1 dB (0 dB: 1 kHz)
20
40

kHz
Min
Typ
Max
Unit
Max. power, RL = 4 Ω

28

W
PO2
VCC = 14.4 V, THD = 10%, RL = 4 Ω

21

POmax2
VCC = 14.4 V, max. power, RL = 4 Ω

34

fPL
VCC = 14.4 V, THD = 1%, RL = 4 Ω,
PoL = −3 dB (1 kHz: 0 dB)

10

Hz
fPH
VCC = 14.4 V, THD = 1%, RL = 4 Ω,
PoH = −3 dB (1 kHz: 0 dB)

18

kHz
VSTB1
Rg = 10 kΩ, RL = 4 Ω, STB → ACT

2.2

V
VSTB2
Rg = 10 kΩ, RL = 4 Ω, ACT → STB

1.5

Cutoff frequency
fC
• Design reference data
Note) The characteristic values below are theoretical values for designing and not guaranteed.
Parameter
Symbol
Maximum output power
POmax
Power band width
STB threshold voltage
Conditions
■ Usage Notes
1. Always attach an outside heat sink to use the AN7555NZ. In addition, the outside heat sink must be fastened onto
a chassis for use.
2. Connect the radiation fin to the GND potential.
3. Prevent short circuit to VCC and short circuit to GND, and load short-circuit although the protection circuits for short
circuit to VCC and ASO are built-in.
4. The thermal protection circuit gets actuated when Tj = approx. 150°C, but it is automatically reset when the chip
temperature drops below the above set level.
5. The overvoltage protection circuit starts the protection operation at VCC = approx. 20 V.
6. Take into consideration the heat radiation design particularly when VCC is set high.
7. When the beep sound function is not used, connect to GND the beep sound input pin.
8. Don't down below − 0.3 V for the beep sound input pin.
9. When the AUX function is not used, open the AUX input pin.
10. Connect to signal GND of pre-stage amplifier only for the signal source ground.
• There are the possibility of breakdown for the following conditions.
1. Reverse connection of the power supply pin and the GND pin.
2. Connection of the power supply between output pins at open condition of the power supply pin and the GND pin.
3. Short circuit to GND of output pin when the GND pin is open.
4. Short circuit to GND of above the three output pins at the same time with a shorting resistor which does not
operate the protection circuit.
5. Short circuit to GND of above the plus and minus output pins at the same time with a shorting resistor which does
not operate the protection circuit.
6. Short circuit to ground with shorting the RF pin and the output pin.
4
ICs for Audio Common Use
AN7555NZ
■ Technical Information
• PD  Ta curves of HZIP025-P-0980
PD  T a
1.800
1.770
1.600
Mounted on standard board
(grass epoxy : 50 mm × 50 mm × t0.08 mm)
Rth (j−a) = 70.6 °C/W
Power dissipation PD (W)
1.400
1.200
1.075
1.000
0.800
Independent IC
without heat shink
Rth( j−a) = 116.2°C/W
0.600
0.400
0.200
0.000
0
25
50
75
100
125
150
Ambient temperature Ta (°C)
10 kΩ
19
12
4
11
5
13
6
14
7
15
1 µF
10 kΩ
1 µF
4Ω
AUX
22 kΩ
5V
Beep
0V
Muting
18
10 kΩ
4Ω
22
3
17
8
10
9
2
24
1
23
4Ω
16
1 µF
4Ω
25
20
33 µF
VCC
1 µF
2 200 µF
21
10 kΩ
1 µF
■ Application Circuit Example
5
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