Philips TDA3603P-N2, TDA3603P-N1, TDA3603-N1, TDA3603-N2 Datasheet

DATA SH EET

Product speciﬁcation Supersedes data of 1995 Oct 04 File under Integrated Circuits, IC01

1997 Aug 15

INTEGRATED CIRCUITS

TDA3603

Multiple voltage regulator with switch

1997 Aug 15 2

Philips Semiconductors Product speciﬁcation

Multiple voltage regulator with switch TDA3603

FEATURES General

• One V

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

GENERAL DESCRIPTION

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.

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA3603 SIL9MPF plastic single in-line medium power package with ﬁn; 9 leads SOT110-1 TDA3603P HDIP18 plastic heat-dissipating dual in-line package; 18 leads SOT398-1

1997 Aug 15 3

Philips Semiconductors Product speciﬁcation

Multiple voltage regulator with switch TDA3603

QUICK REFERENCE DATA

Notes

1. Minimum operating voltage, only if V

has exceeded 6.5 V.

2. The drop-out voltage of regulator 1 is measured between VPand REG1.

3. The drop-out voltage of the power switch is measured between VPand Vsw.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

supply voltage

operating 9.75 14.4 25 V regulator 2 on note 1 2.4 14.4 25 V jump start t ≤ 10 minutes −−30 V load dump protection during 50 ms; t

≥ 2.5 ms −−50 V

total quiescent current standby mode − 400 500 µA

operating virtual junction temperature −−150 °C

Voltage regulators

REG1

output voltage regulator 1 0.5 mA ≤ I

REG1

≤ 300 mA 8.65 9.0 9.35 V

REG2

output voltage regulator 2 0.5 mA ≤ I

REG2

≤ 50 mA;

VP= 14.4 V

4.8 5.0 5.2 V

REGd1

drop-out voltage regulator 1 I

REG1

= 0.3 A; note 2 −−0.5 V

Power switch

swd

drop-out voltage Isw= 0.3 A; note 3 −−0.9 V

peak current t ≤ 10 ms 1.4 −−A

1997 Aug 15 4

Philips Semiconductors Product speciﬁcation

Multiple voltage regulator with switch TDA3603

BLOCK DIAGRAM

Fig.1 Block diagram (for SOT110-1).

handbook, full pagewidth

MBE231

REGULATOR 1

IGNITION

BUFFER

REGULATOR 2

TEMPERATURE

LOAD DUMP

PROTECTION

POWER SWITCH

ground

(14.4 V)

TDA3603

I(ig)

O(ig)

RES (5 V)

REG1

(9 V/300 mA)

REG2

(5 V/50 mA)

(14.0 V/0.3 A)

1997 Aug 15 5

Philips Semiconductors Product speciﬁcation

Multiple voltage regulator with switch TDA3603

PINNING

SYMBOL

DESCRIPTION

SOT110-1 SOT398-1

1 1 supply voltage REG1 2 2 regulator 1 output RES 3 3 reset output voltage (+5 V) V

4 4 enable input voltage V

O(ig)

5 5 ignition output voltage GND 6 6 ground (0 V) REG2 7 7 regulator 2 output V

I(ig)

8 8 ignition input voltage V

9 9 power switch output voltage i.c. − 10 to 18 can be connected to a heat spreader

Fig.2 Pin configuration for SOT110-1.

handbook, halfpage

TDA3603

MBE230

1 2 3 4 5 6 7 8 9

REG1

REG2

RES

O(ig)

I(ig)

GND

Fig.3 Pin configuration for SOT398-1.

Pins 10 to 18 can be connected to a heat spreader.

handbook, halfpage

TDA3603P

MBE229

1 2 3 4 5 6 7 8 9

18 17 16 15 14 13 12 11 10

i.c. i.c. i.c. i.c. i.c. i.c. i.c. i.c. i.c.

REG1

REG2

RES

O(ig)

I(ig)

GND

1997 Aug 15 6

Philips Semiconductors Product speciﬁcation

Multiple voltage regulator with switch TDA3603

FUNCTIONAL DESCRIPTION

The TDA3603 is a multiple output voltage regulator with a power switch, intended for use in car radios with or without a microcontroller. Because of low-voltage operation of the car radio, low-voltage drop regulators are used.

Regulator 2 will switch on when the supply voltage exceeds 6.5 V for the first time and will switch off again when the output voltage of regulator 2 is below 1.9 V (this is below an engine start). When regulator 2 is switched on and the output voltage of this regulator is within its voltage range, the reset output will be enabled (reset will go HIGH via a pull-up resistor) to generate a reset to the microcontroller. The reset cycles can be extended by an external capacitor at the reset output (pin 3). The start-up feature is built-in to ensure a smooth start-up of the microcontroller at first connection, without uncontrolled switching of regulator 2 during the start-up sequence.

When both regulator 2 and the supply voltage (V

> 4.5 V) are available, regulator 1 and the switch can be operated by an enable input (pin 4).

All output pins are fully protected. The regulators are protected against load dump (regulator 1 will switch off at supply voltages higher than 25 V) and short-circuit (foldback current protection). The switch contains a current protection which is delayed for ≥10 ms (in short-circuit condition). During this time the current is limited to 1.4 A (V

≤ 18 V).

At supply voltages over 16.9 V the switch is clamped at

15.0 V (to avoid externally connected circuitry being damaged by an overvoltage) and the switch will switch off at load dump.

Interfacing with the microcontroller can be accomplished by an ignition Schmitt trigger and ignition output buffer, (simple full/semi on/off logic applications).

The total timing of a semi on/off logic set is shown Fig.4.

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