PHILIPS TDA3618AJR

INTEGRATED CIRCUITS
DATA SHEET
TDA3618AJR
Multiple voltage regulator with
switch and ignition buffers
Product specification
File under Integrated Circuits, IC01
2001 May 02
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
• Foldback current limit protection for
regulators 1, 2 and 3
FEATURES
General
• Delayed second current limit protection for the power
switch at short-circuit
• Extremely low noise behaviour and good stability with
very small output capacitors
• The regulator outputs and the power switch are DC
short-circuit safe to ground and VP.
• Two VP-state controlled regulators and a power switch
• Regulator 2, reset and ignition buffer operate during
load dump and thermal shutdown
GENERAL DESCRIPTION
• Separate control pins for switching regulator 1,
regulator 3 and the power switch
The TDA3618AJR is a multiple output voltage regulator
with a power switch and ignition buffers, intended for use
in car radios with or without a microcontroller. It contains:
• Supply voltage range from −18 to +50 V
• Low reverse current of regulator 2
• Two fixed voltage regulators with foldback current
protection (regulators 1 and 3) and one fixed voltage
regulator (regulator 2) intended to supply a
microcontroller, that also operates during load dump
and thermal shutdown
• Low quiescent current when regulator 1, regulator 3 and
the power switch are switched off
• Hold output for low VP
• Hold output for regulators 1 and 3
• A power switch with protection, operated by an enable
input
• Hold output for foldback mode switch
• Hold output for load dump and temperature protection
• Reset and hold outputs that can be used to interface
with the microcontroller; the reset signal can be used to
wake up the microcontroller
• Reset (push-pull) and hold (open collector) outputs
• Adjustable reset delay time
• A supply pin that can withstand load dump pulses and
negative supply voltages
• High ripple rejection
• Backup capacitor for regulator 2
• Regulator 2, which is switched on at a backup voltage
greater than 6.5 V and off when the output voltage of
regulator 2 drops below 1.9 V
• Two independent ignition buffers, one inverted and with
open collector output.
• A provision for the use of a reserve supply capacitor that
will hold enough energy for regulator 2 (5 V continuous)
to allow a microcontroller to prepare for loss of voltage
Protection
• Reverse polarity safe, down to −18 V
• Able to withstand voltages up to 18 V at the outputs
(supply line may be short-circuited)
• An inverted ignition 1 input with open collector output
stage
• ESD protected on all pins
• An ignition 2 input Schmitt trigger with push-pull output
stage.
• Thermal protections with hysteresis
• Load dump protection
ORDERING INFORMATION
TYPE
NUMBER
TDA3618AJR
2001 May 02
PACKAGE
NAME
DBS17P
DESCRIPTION
plastic DIL-bent-SIL (specially bent) power package;
17 leads (lead length 12 mm)
2
VERSION
SOT475-1
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
VP
supply voltage
Iq(tot)
total quiescent supply current
Tj
junction temperature
operating
11
14.4
18
V
reverse polarity; non-operating
−
−
−18
V
regulator 2 on
2.4
14.4
50
V
jump start; t ≤ 10 minutes
−
−
30
V
load dump protection; t ≤ 50 ms;
tr ≥ 2.5 ms
−
−
50
V
standby mode
−
400
500
µA
−
−
150
°C
Voltage regulators
VO(REG1)
output voltage of regulator 1
1 mA ≤ IREG1 ≤ 600 mA
8.5
9.0
9.5
V
VO(REG2)
output voltage of regulator 2
0.5 mA ≤ IREG2 ≤ 150 mA; VP = 14.4 V
4.75
5.0
5.25
V
VO(REG3)
output voltage of regulator 3
1 mA ≤ IREG3 ≤ 750 mA
4.75
5.0
5.25
V
ISW = 1 A
−
0.45
0.70
V
ISW = 1.8 A
−
1.0
1.8
V
3
−
−
A
Power switch
Vdrop
drop-out voltage
IM
peak current
2001 May 02
3
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
BLOCK DIAGRAM
handbook, full pagewidth
VP
1
11
ENSW
Vth(r) = 7 V, Vth(f) = 4.5 V
POWER SWITCH
17
SW
TEMPERATURE
LOAD DUMP
PROTECTION
&
BACK-UP SWITCH
16
BU
BACK-UP CONTROL
REGULATOR 2
REGULATOR 3
&
15
3
REG2
REG3
4
EN3
TDA3618AJR
REGULATOR 1
&
2
REG1
10
EN1
12
≥1
&
Vreg2
9
CRES
RES
13
5
IGN2IN
IGNITION BUFFER
8
7
6
INVERTER
IGN1IN
14
MGU332
GND
Fig.1 Block diagram.
2001 May 02
HOLD
4
IGN2OUT
IGN1OUT
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
PINNING
SYMBOL
PIN
DESCRIPTION
VP
1
supply voltage
REG1
2
regulator 1 output
REG3
3
regulator 3 output
EN3
4
enable input regulator 3
IGN2IN
5
ignition 2 input
IGN1IN
6
IGN1OUT
handbook, halfpage
VP
1
REG1
2
REG3
3
EN3
4
ignition 1 input
IGN2IN
5
7
ignition 1 output (active LOW)
IGN1IN
6
IGN2OUT
8
ignition 2 output
IGN1OUT
7
RES
9
reset output (push-pull)
IGN2OUT
8
EN1
10
enable input regulator 1
ENSW
11
enable input power switch
HOLD
12
hold output (active LOW)
CRES
13
reset delay capacitor
GND
14
ground
HOLD 12
REG2
15
regulator 2 output
CRES 13
BU
16
backup
SW
17
power switch output
RES
9 TDA3618AJR
EN1 10
ENSW 11
GND 14
REG2 15
BU 16
SW 17
MGU333
Fig.2 Pin configuration.
2001 May 02
5
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
The hold output is enabled (LOW) at low battery voltages.
This indicates that it is not possible to get regulator 1 into
regulation when switching it on. The hold function includes
hysteresis to avoid oscillations when the regulator voltage
crosses the hold threshold. Pin HOLD also becomes LOW
when the switch is in foldback protection mode; see Fig.4
for a timing diagram. The hold circuit block diagram is
given in Fig.3.
FUNCTIONAL DESCRIPTION
The TDA3618AJR is a multiple output voltage regulator
with a power switch, intended for use in car radios with or
without a microcontroller. Because of the low-voltage
operation of the car radio, low-voltage drop regulators are
used in the TDA3618AJR.
Regulator 2 switches on when the backup voltage
exceeds 6.5 V for the first time and switches off again
when the output voltage of regulator 2 falls below 1.9 V
(this is far below an engine start). When regulator 2 is
switched on and its output voltage is within its voltage
range, the reset output is enabled to generate a reset to
the microcontroller. The reset cycle can be extended by an
external capacitor at pin CRES. This start-up feature is
included to secure a smooth start-up of the microcontroller
at first connection, without uncontrolled switching of
regulator 2 during the start-up sequence.
The power switch can also be controlled by means of a
separate enable input (pin ENSW).
All output pins are fully protected. The regulators are
protected against load dump (regulators 1 and 3 switch off
at supply voltages >18 V) and short circuit (foldback
current protection).
The switch contains a current protection. However, this
protection is delayed at short-circuit by the reset delay
capacitor. During this time, the output current is limited to
a peak value of at least 3 and 2 A continuous (VP ≤ 18 V).
The charge of the backup capacitor can be used to supply
regulator 2 for a short period when the supply drops to 0 V
(the time depends on the value of the storage capacitor).
In the normal situation, the voltage on the reset delay
capacitor is approximately 3.5 V (depending on
temperature). The switch output is approximately
VP − 0.4 V. At operational temperature, the switch can
deliver at least 3 A. At high temperature, the switch can
deliver approximately 2 A. During an overload condition or
short-circuit (VSW < VP − 3.7 V), the voltage on the reset
delay capacitor rises 0.6 V above the voltage of
regulator 2. This rise time depends on the capacitor
connected to pin CRES. During this time, the switch can
deliver more than 3 A. The charge current of the reset
delay capacitor is typically 4 µA and the voltage swing
approximately 1.5 V. When regulator 2 is out of regulation
and generates a reset, the switch can only deliver 2 A and
will go into foldback protection without delay. At supply
voltages >17 V, the switch is clamped at 16 V maximum
(to avoid externally connected circuits being damaged by
an overvoltage) and the switch will switch off at load dump.
The output stages of regulators 1 and 3 have an extremely
low noise behaviour and good stability. These regulators
are stabilized by using small output capacitors.
When both regulator 2 and the supply voltage (VP > 4.5 V)
are available, regulators 1 and 3 can be operated by
means of the enable inputs (pins EN1 and EN3
respectively).
Pin HOLD is normally HIGH and is active LOW. Pin HOLD
is connected to an open collector NPN transistor and must
have an external pull-up resistor to operate. The HOLD
output is controlled by a LOW-voltage detection circuit
which, when activated, pulls the warning output LOW
(enabled). The detection outputs of the regulators are
connected to an OR gate inside the IC such that the hold
is activated (goes LOW) when the regulator voltages of
regulator 1 and/or regulator 3 are out of regulation for any
reason. Each regulator enable input controls its own
detection circuit, such that if a regulator is disabled or
switched off, the detection circuit for that regulator is
disabled.
Interfacing with the microcontroller (simple full/semi on/off
logic applications) can be realized with two independent
ignition Schmitt triggers and ignition output buffers (one
open collector and one push-pull output). Ignition 1 output
is inverted.
The hold circuit is also controlled by the temperature and
load dump protection. Activating the temperature or load
dump protection causes a hold (LOW) during the time the
protection is activated. When all regulators are switched
off, pin HOLD is controlled by the battery line (pin VP),
temperature protection and load dump protection.
2001 May 02
The total timing diagrams are shown in Figs 4 and 5.
6
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
handbook, full pagewidth
VP
TDA3618AJR
low battery
detector
1
Vref1
TDA3618AJR
output stage
Vref2
2
REG1
&
enable
EN1
out of
regulation
detector
≥1
10
REGULATOR 1
output stage
3
≥1
enable
EN3
out of
regulation
detector
4
REGULATOR 3
12
buffer
TEMPERATURE
PROTECTION
>150 °C
LOAD
DUMP
V16
FOLDBACK
MODE
MGU334
Fig.3 Block diagram of the hold circuit.
2001 May 02
7
REG3
HOLD
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
handbook, full pagewidth
VP
load dump
7.0 V
4.5 V
≤50 V
ignition 1 ≥3.25 V
input
≤1.1 V
≥−100 V
5.0 V
ignition 1
output
0.2 V
Schmitt trigger ignition 1
load dump
VP
≤50 V
≥2.2 V
ignition 2
input
≤2.0 V
≥−100 V
ignition 2
output
5.0 V
0.2 V
Schmitt trigger ignition 2
VP
>1.8 V
enable
regulator 3 <1.3 V
>1.8 V
enable
regulator 1 <1.3 V
regulator 3
regulator 1
temperature active
protection
150 °C passive
HOLD
HIGH
LOW
Hold output
Fig.4 Timing diagram of ignition Schmitt triggers and HOLD.
2001 May 02
8
MGR930
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
handbook, full pagewidth
TDA3618AJR
load dump
VP
VBU
6.5 V
5.4 V
regulator 2
5.0 V
1.9 V
0V
reset
delay
capacitor
5.0 V
3.0 V
0V
reset
5.0 V
Backup Schmitt trigger and reset behaviour
load dump
18 V
VP
10.4 V
7.0 V
4.0 V
>1.8 V
enable
regulator 1 <1.3 V
9V
regulator 1
0V
>1.8 V
enable
regulator 3 <1.3 V
5.0 V
regulator 3
0V
VP and enable Schmitt trigger
load dump
16.9 V
VP
7.0 V
4.0 V
enable
power
switch
>1.8 V
<1.3 V
16 V
power
switch
output
0V
Power switch behaviour
Fig.5 Timing diagram of regulators and power switch.
2001 May 02
9
MGK610
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOL
VP
PARAMETER
supply voltage
CONDITIONS
MIN.
MAX.
UNIT
operating
−
18
V
reverse polarity; non-operating
−
−18
V
jump start; t ≤ 10 minutes
−
30
V
load dump protection; t ≤ 50 ms; tr ≥ 2.5 ms
−
50
V
−
62
W
non-operating
−55
+150
°C
Ptot
total power dissipation
Tstg
storage temperature
Tamb
ambient temperature
operating
−40
+85
°C
Tj
junction temperature
operating
−40
+150
°C
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
Rth(j-c)
thermal resistance from junction to case
Rth(j-a)
thermal resistance from junction to ambient
2001 May 02
CONDITIONS
in free air
10
VALUE
UNIT
2
K/W
50
K/W
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
CHARACTERISTICS
VP = 14.4 V; Tamb = 25 °C; see Fig.8; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supplies
VP
Iq
supply voltage
quiescent supply current
operating
11
regulator 2 on; note 1
2.4
14.4
18
V
14.4
18
V
jump start; t ≤ 10 minutes −
−
30
V
load dump protection;
t ≤ 50 ms; tr ≥ 2.5 ms
−
−
50
V
VP = 12.4 V; note 2
−
390
500
µA
VP = 14.4 V; note 2
−
400
−
µA
Schmitt trigger for regulator 1, regulator 3 and the power switch
Vth(r)
rising threshold voltage
6.5
7.0
7.5
V
Vth(f)
falling threshold voltage
4.0
4.5
5.0
V
Vhys
hysteresis voltage
−
2.5
−
V
Schmitt trigger for regulator 2
Vth(r)
rising threshold voltage
6.0
6.5
7.1
V
Vth(f)
falling threshold voltage
1.7
1.9
2.3
V
Vhys
hysteresis voltage
−
4.6
−
V
Schmitt trigger for enable inputs (regulator 1, regulator 3 and the power switch)
Vth(r)
rising threshold voltage
1.4
1.8
2.4
V
Vth(f)
falling threshold voltage
0.9
1.3
1.9
V
Vhys
hysteresis voltage
IREG = ISW = 1 mA
−
0.5
−
V
ILI
input leakage current
VEN = 5 V
1
5
10
µA
Reset trigger level of regulator 2
Vth(r)
rising threshold voltage
VP rising; IREG1 = 50 mA; 4.43
note 3
VO(REG2) − 0.15 VO(REG2) − 0.1
V
Vth(f)
falling threshold voltage
VP falling; IREG1 = 50 mA; 4.4
note 3
VO(REG2) − 0.20 VO(REG2) − 0.15
V
Schmitt triggers for HOLD output
Vth(r)(REG1) rising threshold voltage of
regulator 1
VP rising; note 3
−
VO(REG1) − 0.15 VO(REG1) − 0.075 V
Vth(f)(REG1) falling threshold voltage of
regulator 1
VP falling; note 3
8.1
VO(REG1) − 0.35 −
V
−
0.2
−
V
Vhys(REG1)
hysteresis voltage due to
regulator 1
Vth(r)(REG3) rising threshold voltage of
regulator 3
VP rising; note 3
−
VO(REG3) − 0.15 VO(REG3) − 0.075 V
Vth(f)(REG3) falling threshold voltage of
regulator 3
VP falling; note 3
4.1
VO(REG3) − 0.35 −
V
−
0.2
−
V
Vhys(REG3)
2001 May 02
hysteresis voltage due to
regulator 3
11
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
SYMBOL
PARAMETER
TDA3618AJR
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Vth(r)(VP)
rising threshold voltage of
supply voltage
VEN = 0 V
9.1
9.7
10.3
V
Vth(f)(VP)
falling threshold voltage of
supply voltage
VEN = 0 V
9.0
9.4
9.8
V
Vhys(VP)
hysteresis voltage of
supply voltage
VEN = 0 V
−
0.3
−
V
2
−
−
mA
0.1
5
µA
400
900
µA
Reset and hold buffer
Isink(L)
LOW-level sink current
VRES ≤ 0.8 V;
VHOLD ≤ 0.8 V;
VCRES < 1.0V
ILO
HOLD output leakage
current
VP = 14.4 V; VHOLD = 5 V −
Isource(H)
HIGH-level source current VP = 14.4V; VRES = 4.5V; 240
VCRES > 3.5V
tr
rise time
note 4
−
7
50
µs
tf
fall time
note 4
−
1
50
µs
Reset delay
Ich
charge current
2
4
8
µA
Idch
discharge current
500
800
−
µA
Vth(r)(RES)
rising voltage threshold
reset signal
2.5
3.0
3.5
V
td(RES)
delay time reset signal
20
35
70
ms
Vth(r)(SW)
rising voltage threshold
switch foldback protection
−
VO(REG2)
−
V
td(SW)
delay time switch foldback
protection
8
17.6
40
ms
−
1
400
mV
C = 47 nF; note 5
C = 47 nF; note 6
Regulator 1 (IREG1 = 5 mA unless otherwise specified)
VO(off)
output voltage off
VO(REG1)
output voltage
1 mA ≤ IREG1 ≤ 600 mA
8.5
9.0
9.5
V
12 V ≤ VP ≤ 18 V
8.5
9.0
9.5
V
∆Vline
line regulation
12 V ≤ VP ≤ 18 V
−
2
75
mV
∆Vload
load regulation
1 mA ≤ IREG1 ≤ 600 mA
−
20
100
mV
Iq
quiescent current
IREG1 = 600 mA
−
25
60
mA
SVRR
supply voltage ripple
rejection
fi = 3 kHz; Vi(p-p) = 2 V
60
70
−
dB
Vdrop
drop-out voltage
IREG1 = 550 mA;
VP = 9.5 V; note 7
−
0.4
0.7
V
Ilim
current limit
VO(REG1) > 8.5 V; note 8
0.65
1.2
−
A
Isc
short-circuit current
RL ≤ 0.5 Ω; note 9
250
800
−
mA
2001 May 02
12
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
SYMBOL
PARAMETER
TDA3618AJR
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Regulator 2 (IREG2 = 5 mA unless otherwise specified)
VO(REG2)
∆Vline
∆Vload
output voltage
line regulation
load regulation
0.5 mA ≤ IREG2 ≤ 300 mA 4.75
5.0
5.25
V
8 V ≤ VP ≤ 18 V
4.75
5.0
5.25
V
18 V ≤ VP ≤ 50 V;
IREG2 ≤ 150 mA
4.75
5.0
5.25
V
6 V ≤ VP ≤ 18 V
−
2
50
mV
6 V ≤ VP ≤ 50 V
−
15
75
mV
1 mA ≤ IREG2 ≤ 150 mA
−
20
50
mV
1 mA ≤ IREG2 ≤ 300 mA
−
−
100
mV
SVRR
supply voltage ripple
rejection
fi = 3 kHz; Vi(p-p) = 2 V
60
70
−
dB
Vdrop
drop-out voltage
IREG2 = 100 mA;
VP = 4.75 V; note 7
−
0.4
0.6
V
IREG2 = 200 mA;
VP = 5.75 V; note 7
−
0.8
1.2
V
IREG2 = 100 mA;
VBU = 4.75 V; note 10
−
0.2
0.5
V
IREG2 = 200 mA;
VBU = 5.75 V; note 10
−
0.8
1.0
V
Ilim
current limit
VO(REG2) > 4.5 V; note 8
0.32
0.37
−
A
Isc
short-circuit current
RL ≤ 0.5 Ω; note 9
20
100
−
mA
Regulator 3 (IREG3 = 5 mA unless otherwise specified)
VO(off)
output voltage off
VO(REG3)
output voltage
−
1
400
mV
1 mA ≤ IREG3 ≤ 750 mA
4.75
5.0
5.25
V
7 V ≤ VP ≤ 18 V
4.75
5.0
5.25
V
∆Vline
line regulation
7 V ≤ VP ≤ 18 V
−
2
50
mV
∆Vload
load regulation
1 mA ≤ IREG3 ≤ 750 mA
−
20
100
mV
Iq
quiescent current
IREG3 = 750 mA
−
19
45
mA
SVRR
supply voltage ripple
rejection
fi = 3 kHz; Vi(p-p) = 2 V
60
70
−
dB
Vdrop
drop-out voltage
IREG3 = 500 mA;
VP = 5.75 V; note 7
−
1
1.5
V
Ilim
current limit
VO(REG3) > 4.5 V; note 8
0.80
0.90
−
A
Isc
short-circuit current
RL ≤ 0.5 Ω; note 9
100
400
−
mA
ISW = 1 A; VP = 13.5 V;
note 11
−
0.45
0.70
V
ISW = 1.8 A; VP = 13.5 V;
note 11
−
1.0
1.8
V
Power switch
Vdrop
drop-out voltage
Idc
continuous current
VP = 16 V; VSW = 13.5 V
1.8
2.0
−
A
Vclamp
clamping voltage
VP ≥ 17 V
13.5
15.0
16.0
V
2001 May 02
13
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
SYMBOL
PARAMETER
TDA3618AJR
CONDITIONS
IM
peak current
VP = 17 V;
notes 6, 12, 13
Vfb
flyback voltage behaviour
ISW = −100 mA
Isc
short-circuit current
VP = 14.4 V;
VSW < 1.2 V; note 13
MIN.
TYP.
MAX.
UNIT
−
−
A
−
VP + 3
22
V
−
0.8
−
A
3
Backup switch
Idc
continuous current
0.3
0.35
−
A
Vclamp
clamping voltage
VP ≥ 16.7 V
−
−
16
V
Ir
reverse current
VP = 0 V; VBU = 12.4 V
−
−
−900
µA
Schmitt trigger for enable input of ignition 1
Vth(r)
rising threshold voltage of
ignition 1 input
2.75
3.25
3.75
V
Vth(f)
falling threshold voltage of
ignition 1 input
0.8
−
1.3
V
Vhys
hysteresis voltage
1.5
−
−
V
ILI
input leakage current
VIGN1IN = 5 V
−
−
1.0
µA
II(clamp)
input clamping current
VIGN1IN > 50 V
−
−
50
mA
VIH(clamp)
HIGH-level input clamping
voltage
VP
−
50
V
VIL(clamp)
LOW-level input clamping
voltage
−0.6
−
0
V
6.5
7.0
7.5
V
note 14
4.0
4.5
5.0
V
0
0.2
0.8
V
Schmitt trigger for power supply of ignition 1
Vth(r)
rising threshold voltage
Vth(f)
falling threshold voltage
Ignition 1 buffer
VOL
LOW-level output voltage
IIGN1OUT = 0 mA
VOH
HIGH-level output voltage
IIGN1OUT = 0 mA
4.5
5.0
5.25
V
IOL
LOW-level output current
VIGN1OUT ≤ 0.8 V
0.45
0.8
−
mA
ILO
output leakage current
VIGN1OUT = 5 V;
VIGN1IN = 0 V
−
−
1.0
µA
tPLH
LOW-to-HIGH propagation VIGN1IN falling from
time
3.75 to 0.8 V
−
−
500
µs
tPHL
HIGH-to-LOW
propagation time
−
−
500
µs
VIGN1IN rising from
0.8 to 3.75 V
Schmitt trigger for enable input of ignition 2
Vth(r)
rising threshold voltage of
ignition 2 input
VP > 3.5 V
1.9
2.2
2.5
V
Vth(f)
falling threshold voltage of
ignition 2 input
VP > 3.5 V
1.7
2.0
2.3
V
Vhys
hysteresis voltage
VP > 3.5 V
0.1
0.2
0.5
V
ILI
input leakage current
VIGN2IN = 5 V
−
−
1.0
µA
II(clamp)
input clamp current
VIGN2IN > 50 V
−
−
50
mA
2001 May 02
14
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
SYMBOL
PARAMETER
TDA3618AJR
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VIH(clamp)
HIGH-level input clamping
voltage
VP
−
50
V
VIL(clamp)
LOW-level input clamping
voltage
−0.6
−
0
V
0
0.2
0.8
V
Ignition 2 buffer
VOL
LOW-level output voltage
IIGN2OUT = 0 mA
VOH
HIGH-level output voltage
IIGN2OUT = 0 mA
4.5
5.0
5.25
V
IOL
LOW-level output current
VIGN2OUT ≤ 0.8 V
0.45
0.8
−
mA
IOH
HIGH-level output current
VIGN2OUT ≥ 4.5 V
−0.45 −2.0
−
mA
ILO
output leakage current
(source)
VIGN2OUT = 5 V;
VIGN2IN = 5 V
−
−
1.0
µA
tPLH
LOW-to-HIGH propagation VIGN2IN rising from
time
1.7 to 2.5 V
−
−
500
µs
tPHL
HIGH-to-LOW
propagation time
−
−
500
µs
VIGN2IN falling from
2.5 to 1.7 V
Notes
1. Minimum operating voltage, only if VP has exceeded 6.5 V.
2. The quiescent current is measured in the standby mode with pins EN1, EN2 and ENSW connected to ground and
RL(REG2) = ∞ (see Fig.8).
3. The voltage of the regulator drops as a result of a VP drop.
4. The rise and fall times are measured with a 10 kΩ pull-up resistor and a 50 pF load capacitor.
5. The delay time depends on the value of the capacitor connected to pin CRES:
C
3
t d(RES) = ------- × V th(r)(RES) = C × ( 750 × 10 ) [s]
I ch
6. The delay time depends on the value of the capacitor connected to pin CRES:
C
3
t d(RES) = ------- × ( V O(REG2) – 3.5 ) = C × ( 375 × 10 ) [s]
I ch
7. The drop-out voltage of regulators 1, 2 and 3 is measured between pins VP and REGn.
8. At current limit, Ilim is held constant (see Fig.6 for the behaviour of Ilim).
9. The foldback current protection limits the dissipated power at short-circuit (see Fig.6).
10. The drop-out voltage is measured between pins BU and REG2.
11. The drop-out voltage of the power switch is measured between pins VP and SW.
12. The maximum output current of the switch is limited to 1.8 A when the supply voltage exceeds 18 V. A test mode is
built in. The delay time of the switch is disabled when a voltage of VP + 1 V is applied to the switch-enable input.
13. At short-circuit, Isc of the power switch is held constant to a lower value than the continuous current after a delay of
at least 10 ms. A test-mode is built in. The delay time of the switch is disabled when a voltage of VP + 1 V is applied
to the switch-enable input.
14. VIGN1OUT = LOW for VIGN1IN > 1.2 V or VEN1 > 1.3 V or VEN3 > 1.3 V or VENSW > 1.3 V.
2001 May 02
15
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
handbook, halfpage
MBK946
9.0
VO(REG1)
(V)
Isc
Ilim
IREG1 (A)
a. Regulator 1.
handbook, halfpage
handbook, halfpage
VO(REG2)
VO(REG3)
(V)
(V)
MGL598
5.0
MGL599
5.0
Isc
Ilim
Isc
IREG2 (A)
b. Regulator 2.
c. Regulator 3.
Fig.6 Foldback current protection of the regulators.
handbook, full pagewidth
MGU349
VSW
(V)
VP − 3.3
delayed
generates
hold
not
delayed
2VBE
>1.8
1
>3
ISW (A)
Fig.7 Current protection of the power switch.
2001 May 02
IREG3 (A)
16
Ilim
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
TEST AND APPLICATION INFORMATION
Test information
handbook, full pagewidth
VP
VP
17
1
SW
C2
220 nF
C1
220 nF
ENSW
15
11
RL(SW)
12 kΩ
5V
REG2
C3
10 µF
VENSW
EN1
10
2
REG1
RL(REG2)
5 kΩ
10 V
C4
10 µF
VEN1
EN3
REG3
4
RL(REG1)
10 kΩ
5V
3
C5
10 µF
VEN3
RL(REG3)
5 kΩ
TDA3618AJR
CRES
13
C7
47 nF
9
RES
C6
1 µF
BU
VBU
12
C8
IGN1IN
R5
VIGN1
10 kΩ
10 kΩ
6
7
5
8
HOLD
IGN1OUT
C9
1 nF
R6
VIGN2
16
IGN2IN
C10
1 nF
IGN2OUT
14
ground
MGU335
Fig.8 Test circuit.
2001 May 02
17
R3
10 kΩ
R4
10 kΩ
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
Application information
The output capacitors can be selected by using the graphs
of Figs 9 and 10. When an electrolytic capacitor is used,
the temperature behaviour of this output capacitor can
cause oscillations at a low temperature. The two examples
below show how an output capacitor value is selected.
NOISE
Table 1
Noise figures
NOISE FIGURE (µV)(1)
REGULATOR
Co = 10 µF
Co = 47 µF
Co = 100 µF
1
170
130
110
2
180
120
100
3
100
70
65
Example 1
Regulators 1 and 3 are stabilized with an electrolytic
output capacitor of 220 µF (ESR = 0.15 Ω). At
Tamb = −30 °C, the capacitor value is decreased to 73 µF
and the ESR is increased to 1.1 Ω. The regulator remains
stable at Tamb = −30 °C.
Note
1. Measured at a bandwidth of 200 kHz.
Example 2
Regulator 2 is stabilized with a 10 µF electrolytic capacitor
(ESR = 3 Ω). At Tamb = −30 °C, the capacitor value is
decreased to 3 µF and the ESR is increased to 23.1 Ω.
Using Fig.10, the regulator will be unstable at
Tamb = −30 °C.
The noise on the supply line depends on the value of the
supply capacitor and is caused by a current noise (the
output noise of the regulators is translated to a current
noise by the output capacitors). When a high frequency
capacitor of 220 nF in parallel with an electrolytic capacitor
of 100 µF is connected directly to pins 1 and 14 (supply
and ground), the noise is minimal.
Solution
To avoid problems with stability at low temperatures, the
use of tantalum capacitors is recommended. Use a
tantalum capacitor of 10 µF or a larger electrolytic
capacitor.
STABILITY
The regulators are stabilized with the externally connected
output capacitors.
MGK612
handbook, halfpage
20
handbook, halfpage
R
(Ω)
R
(Ω)
15
MGK613
14
maximum ESR
12
10
maximum ESR
8
10
stable region
6
5
4
stable region
2
0
0
0.1
Fig.9
1
10
C (µF)
100
0.22
Curve for selecting the value of output
capacitor for regulators 1 and 3.
2001 May 02
minimum ESR
1
10
C (µF)
100
Fig.10 Curve for selecting the value of output
capacitor for regulator 2.
18
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
PACKAGE OUTLINE
DBS17P: plastic DIL-bent-SIL (special bent) power package; 17 leads (lead length 12 mm)
SOT475-1
non-concave
Dh
x
D
Eh
view B: mounting base side
d
A2
B
j
E
A
L3
L
1
Q
17
e1
Z
bp
e
c
w M
0
5
v M
e2
m
10 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
A2
bp
c
D (1)
d
Dh
E (1)
e
mm
17.0
15.5
4.6
4.4
0.75
0.60
0.48
0.38
24.0
23.6
20.0
19.6
10
12.2
11.8
2.54
e1
e2
1.27 5.08
Eh
j
L
L3
m
Q
v
w
x
Z (1)
6
3.4
3.1
12.4
11.0
2.4
1.6
4.3
2.1
1.8
0.8
0.4
0.03
2.00
1.45
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
EIAJ
ISSUE DATE
97-05-20
99-12-17
SOT475-1
2001 May 02
EUROPEAN
PROJECTION
19
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
The total contact time of successive solder waves must not
exceed 5 seconds.
SOLDERING
Introduction to soldering through-hole mount
packages
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.
This text gives a brief insight to wave, dip and manual
soldering. A more in-depth account of soldering ICs can be
found in our “Data Handbook IC26; Integrated Circuit
Packages” (document order number 9398 652 90011).
Wave soldering is the preferred method for mounting of
through-hole mount IC packages on a printed-circuit
board.
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 and 400 °C, contact may be up to 5 seconds.
Soldering by dipping or by solder wave
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joints for more than 5 seconds.
Suitability of through-hole mount IC packages for dipping and wave soldering methods
SOLDERING METHOD
PACKAGE
DIPPING
DBS, DIP, HDIP, SDIP, SIL
WAVE
suitable(1)
suitable
Note
1. For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board.
2001 May 02
20
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
DATA SHEET STATUS
DATA SHEET STATUS(1)
PRODUCT
STATUS(2)
DEFINITIONS
Objective data
Development
This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Preliminary data
Qualification
This data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Product data
Production
This data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
DEFINITIONS
DISCLAIMERS
Short-form specification  The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Life support applications  These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductors customers using or selling these products
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Limiting values definition  Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
at these or at any other conditions above those given in the
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Right to make changes  Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
the use of any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
Application information  Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
no representation or warranty that such applications will be
suitable for the specified use without further testing or
modification.
2001 May 02
21
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
NOTES
2001 May 02
22
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
NOTES
2001 May 02
23
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Internet: http://www.semiconductors.philips.com
SCA 72
© Philips Electronics N.V. 2001
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
403502/01/pp24
Date of release: 2001
May 02
Document order number:
9397 750 08068