INTEGRATED CIRCUITS
DATA SHEET
TDA3603
Multiple voltage regulator with
switch
Product specification
Supersedes data of 1995 Oct 04
File under Integrated Circuits, IC01
1997 Aug 15
Philips Semiconductors
Product specification
Multiple voltage regulator with switch
FEATURES
General
•
One V
P
state controlled regulator (regulator 2)
•
Regulator 2, reset and ignition buffer operate during
load dump and thermal shutdown
•
One control pin for switching regulator 1 and the power
switch
•
Supply voltage range of
−18
to +50 V (operating
from 9.75 V)
•
Low reverse current of regulator 2
•
Low quiescent current (when regulator 1, power switch
and ignition input are switched off, standby)
•
Ignition input/output
•
Reset output
•
High ripple rejection
•
Power switch.
Protections
•
Reverse polarity safe (down to
−18
V without high
reverse current)
•
Able to withstand voltages up to 18 V at the outputs
(supply line may be shortened)
•
ESD protected on all pins
•
Thermal protection
•
Load dump protection
•
Foldback current limit protection for regulators 1 and 2
•
Delayed second current limit protection for the power
switch
•
The regulator outputs and the power switch are DC
short-circuited safe to ground and V
P
.
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME
TDA3603
TDA3603P
SIL9MPF
HDIP18
DESCRIPTION
plastic single in-line medium power package with fin; 9 leads
plastic heat-dissipating dual in-line package; 18 leads
GENERAL DESCRIPTION
TDA3603
The TDA3603 is a multiple output voltage regulator with a
power switch, intended for use in car radios with or without
a microcontroller.
It contains one fixed voltage regulator with a foldback
current protection (regulator 1) and one fixed voltage
regulator (regulator 2), intended to supply a
microcontroller, that also operates during load dump and
thermal shutdown.
There is a power switch with protections, operated by the
enable input.
The reset and ignition outputs can be used to interface by
the microcontroller. The reset signal can be used to call up
the microcontroller and the ignition output indicates
ignition voltage available.
The supply pin can withstand load dump pulses and
negative supply voltages.
Regulator 2 will be switched on at a supply voltage >6.5 V
and off at a voltage of regulator 2 <1.9 V.
VERSION
SOT110-1
SOT398-1
1997 Aug 15
2
Philips Semiconductors
Product specification
Multiple voltage regulator with switch
QUICK REFERENCE DATA
SYMBOL
Supply
V
P
supply voltage
operating
regulator 2 on
jump start
load dump protection
I
q
T
vj
V
REG1
V
REG2
V
REGd1
Power switch
V
swd
I
M
Notes
1. Minimum operating voltage, only if V
P
has exceeded 6.5 V.
2. The drop-out voltage of regulator 1 is measured between V
P
and REG1.
3. The drop-out voltage of the power switch is measured between V
P
and V
sw
.
drop-out voltage
peak current
I
sw
= 0.3 A; note 3
t
≤
10 ms
−
1.4
−
−
total quiescent current
operating virtual junction temperature
0.5 mA
≤
I
REG1
≤
300 mA
0.5 mA
≤
I
REG2
≤
50 mA;
V
P
= 14.4 V
I
REG1
= 0.3 A; note 2
note 1
t
≤
10 minutes
during 50 ms; t
r
≥
2.5 ms
standby mode
9.75
2.4
−
−
−
−
14.4
14.4
−
−
400
−
PARAMETER
CONDITIONS
MIN.
TYP.
TDA3603
MAX.
UNIT
25
25
30
50
500
150
V
V
V
V
µA
°C
Voltage regulators
output voltage regulator 1
output voltage regulator 2
drop-out voltage regulator 1
8.65
4.8
−
9.0
5.0
−
9.35
5.2
0.5
V
V
V
0.9
−
V
A
1997 Aug 15
3
Philips Semiconductors
Product specification
Multiple voltage regulator with switch
BLOCK DIAGRAM
TDA3603
handbook, full pagewidth
VP
(14.4 V)
1
POWER SWITCH
9
VSW
(14.0 V/0.3 A)
&
TEMPERATURE
LOAD DUMP
PROTECTION
REGULATOR 2
7
REG2
(5 V/50 mA)
4
Ven
&
REGULATOR 1
2
REG1
(9 V/300 mA)
TDA3603
3
RES
(5 V)
VI(ig)
8
IGNITION
BUFFER
6
ground
5
VO(ig)
MBE231
Fig.1 Block diagram (for SOT110-1).
1997 Aug 15
4
Philips Semiconductors
Product specification
Multiple voltage regulator with switch
PINNING
PIN
SYMBOL
SOT110-1
V
P
REG1
RES
V
en
V
O(ig)
GND
REG2
V
I(ig)
V
sw
i.c.
1
2
3
4
5
6
7
8
9
−
SOT398-1
1
2
3
4
5
6
7
8
9
10 to 18
supply voltage
regulator 1 output
reset output voltage (+5 V)
enable input voltage
ignition output voltage
ground (0 V)
regulator 2 output
ignition input voltage
power switch output voltage
can be connected to a heat spreader
DESCRIPTION
TDA3603
handbook, halfpage
handbook, halfpage
VP
REG1
RES
V en
V O(ig)
GND
REG2
V I(ig)
Vsw
1
2
3
4
5
6
7
8
9
MBE230
VP
REG1
RES
V en
1
2
3
4
5
6
7
8
9
MBE229
18
17
16
15
i.c.
i.c.
i.c.
i.c.
TDA3603
V O(ig)
GND
REG2
V I(ig)
Vsw
TDA3603P
14 i.c.
13
12
11
10
i.c.
i.c.
i.c.
i.c.
Pins 10 to 18 can be connected to a heat spreader.
Fig.2 Pin configuration for SOT110-1.
Fig.3 Pin configuration for SOT398-1.
1997 Aug 15
5
