TDA3603P datasheet(2/20 Pages) PHILIPS

2 / 20 page

1997 Aug 15

Philips Semiconductors

Product speciﬁcation

Multiple voltage regulator with switch

TDA3603

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 VP.

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

TDA3603P Datasheet(PDF) 2 Page - NXP Semiconductors

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