Philips tda3606a DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA3606A

Multiple voltage regulator with battery detection

Product speciﬁcation Supersedes data of 1997 Aug 12 File under Integrated Circuits, IC01

1998 May 07

Philips Semiconductors Product speciﬁcation

Multiple voltage regulator with battery detection

FEATURES

• One VP-state controlled regulator

• Regulator and reset outputs operate during load dump

• Supply voltage range of −18 to +50 V

• Low quiescent current (battery detection switched off)

• High ripple rejection

• Dual reset output.

PROTECTIONS

• Reverse polarity safe (down to −18 V without high reverse current)

• Able to withstand voltages up to 18 V at the output (supply line may be short-circuited)

• ESD protected on all pins

• Load dump protection

• Foldback current limit protection for regulator

• DC short-circuit safe to ground and V

output.

of regulator

TDA3606A

GENERAL DESCRIPTION

The TDA3606A is a low power voltage regulator. It contains:

1. One fixed voltage regulator with a foldback current protection, intended to supply a microprocessor, that also operates during load dump

2. A reset-signal can be used to interface with the microprocessor

3. Supply pin can withstand load dump pulses and negative supply voltages

4. Defined start-up behaviour; regulator will be switched on at a supply voltage higher than 7.6 V and off when the output voltage of the regulator drops below 2.4 V.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supplies

supply voltage

operating regulator on 5.6 14.4 25 V jump start t ≤ 10 minutes −−30 V

q(tot)

load dump protection t ≤ 50 ms; t

total quiescent supply current standby mode − 95 120 µA

≥ 2.5 ms −−50 V

Voltage regulator

REG

REGd

output voltage regulator 7 V ≤ VP≤ 18 V 4.85 5.0 5.15 V

≤ 150 mA 4.8 5.0 5.2 V

REG

drop-out voltage I

0.5 mA ≤ I = 150 mA −−0.5 V

REG

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

PACKAGE

TDA3606AT SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1

1998 May 07 2

Philips Semiconductors Product speciﬁcation

Multiple voltage regulator with battery detection

BLOCK DIAGRAM

handbook, full pagewidth

I(bat)

(14.4 V)

LOAD DUMP

PROTECTION

REFERENCE

TDA3606A

BATTERY

BUFFER

GND

REG

REGULATOR

4.7 kΩ

1 to 3, 8 to 13, 18 to 20

n.c.

MGK597

(5 V/150 mA)

RES2

RES1

O(bat)

TDA3606A

REG

Fig.1 Block diagram.

PINNING

SYMBOL PIN DESCRIPTION

n.c. 1 to 3 not connected; heat spreader V

I(bat)

O(bat)

4 battery input voltage 5 battery detection output voltage

6 reset delay capacitor GND 7 ground (0 V) n.c. 8 to 13 not connected; heat spreader RES2 14 reset 2 output RES1 15 reset 1 output REG 16 regulator output V

17 supply voltage

n.c. 18 to 20 not connected; heat spreader

handbook, halfpage

n.c.

I(bat)

O(bat)

GND

n.c. n.c. n.c.

5 6

7 8 9

TDA3606AT

MGK600

Fig.2 Pin configuration.

n.c.

20 19

n.c.

REG RES1

RES2

n.c.

1998 May 07 3

Philips Semiconductors Product speciﬁcation

Multiple voltage regulator with battery detection

FUNCTIONAL DESCRIPTION

The TDA3606A is a voltage regulator intended to supply a microprocessor (e.g. in car radio applications). Because of low voltage operation of the application, a low-voltage drop regulator is used in the TDA3606A.

This regulator will switch on when the supply voltage exceeds 7.6 V for the first time and will switch off again when the output voltage of the regulator drops below

2.4 V. When the regulator is switched on, the RES1 and RES2 outputs (RES2 can only be HIGH when RES1 is HIGH) will go HIGH after a fixed delay time (fixed by an external delay capacitor) to generate a reset to the microprocessor.

handbook, full pagewidth

TDA3606A

RES1 will go HIGH by an internal pull-up resistor of 4.7 kΩ, and is used to initialize the microprocessor. RES2 is used to indicate that the regulator output voltage is within its voltage range. This start-up feature is built-in to secure a smooth start-up of the microprocessor at first connection, without uncontrolled switching of the regulator during the start-up sequence.

All output pins are fully protected. The regulator is protected against load dump and short-circuit (foldback current protection).

Interfacing with the microprocessor can be accomplished by means of a battery Schmitt-trigger and output buffer (simple full/semi on/off logic applications). The battery output will go HIGH when the battery input voltage exceeds the HIGH threshold level.

50 V

regulator

reset 1

reset 2

reset delay

capacitor

on/off switch

battery input

battery output

4.35 V 4.35 V

2 V 2 V

Fig.3 Timing diagrams.

2.4 V

2.1 V

2 V

MGB857

1998 May 07 4

Philips Semiconductors Product speciﬁcation

Multiple voltage regulator with battery

TDA3606A

detection

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

I(bat)p

I(bat)n

tot

stg

amb

THERMAL CHARACTERISTICS

supply voltage

operating regulator on − 25 V jump start t ≤ 10 minutes − 30 V load dump protection t ≤ 50 ms; t

≥ 2.5 ms − 50 V

reverse battery voltage non-operating −−18 V positive pulse voltage at battery input VP= 14.4 V; RI=5kΩ− 50 V negative pulse voltage at battery input VP= 14.4 V; RI=5kΩ− −100 V total power dissipation T

=25°C − 2.5 W

amb

storage temperature non-operating −55 +150 °C operating ambient temperature −40 +85 °C junction temperature operating −40 +150 °C

SYMBOL PARAMETER CONDITIONS VALUE UNIT

R R

th (j-p) th (j-a)

thermal resistance from junction to pins 20 K/W thermal resistance from junction to

ambient

in free air; note 1 50 K/W in free air; note 2 60 K/W

Notes

1. On IMS board.

2. On standard board with double sided copper area connected to pins.

QUALITY SPECIFICATION

In accordance with

Handbook”

. The handbook can be ordered using the code 9397 750 00192.

“SNW-FQ-611E”

. The number of the quality specification can be found in the

“Quality Reference

1998 May 07 5

+ 11 hidden pages