Philips TDA3602 Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TDA3602

Multiple output voltage regulator

Product speciﬁcation File under Integrated Circuits, IC01

July 1994

Philips Semiconductors Product speciﬁcation

Multiple output voltage regulator TDA3602

FEATURES

• Two VP state controlled regulators (REG1 and REG2)

• Regulator 3 operates during load dump or thermal

shutdown

• Multi-function control pin

• A back-up circuit for Regulator 3 via a single capacitor

• Supply voltage of −6 V to 50 V (a voltage of −3 V on V

does not discharge capacitor Cbu)

• Low reverse current Regulator 3

• Low quiescent current in coma mode

• HOLD output

• RESET output (LOW at load dump)

• High ripple rejection.

PROTECTIONS

• Foldback current limit protection (Regulators 1 and 2)

• Load dump protection

• Thermal protection

• DC short-circuit safe to ground and V

of all regulator

outputs

• Reverse polarity safe of pin 1 (VP). No high currents are flowing which can damage the IC

• Capable of handling high energy on the regulator outputs.

GENERAL DESCRIPTION

The TDA3602 is a multiple output voltage regulator, intended for use in car radios with or without a microprocessor. It contains two fixed voltage regulators with foldback current protection (Regulators 1 and 2), and one fixed voltage regulator that also operates during load dump and thermal shutdown. This regulator can be used to supply a microprocessor.

A back-up circuit supplies Regulator 3 during a short period after the power is cut off (negative field decay or engine start procedure). A state control pin (pin 4) controls the device, which can be switched through four stages using the information at this pin. The switching levels at this pin contain hysteresis.

RESET and HOLD outputs can be used to interface with a microprocessor. The RESET signal can be used to call up or initialize a microprocessor (power-on reset). The HOLD signal can be used to control the power stages (mute signal in a low end application), or to generate a HOLD interrupt (microprocessor application).

An internal Zener diode on the back-up pin allows this pin to withstand a load dump when supplied by the pin using a 100 Ω series resistor.

The supply pin can withstand load dump pulses and negative supply voltages.

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Philips Semiconductors Product speciﬁcation

Multiple output voltage regulator TDA3602

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

Voltage regulators

positive supply voltage

operating 9.2 14.4 18 V Regulator 3 on 6.0 14.4 18 V jump start −−30 V load dump; Regulator 3 on −−50 V operating note 1 6.5 − 30 V

load dump; Regulator 3 on note 1 −−50 V total quiescent current coma mode − 290 −µA virtual junction temperature −−150 °C

output voltage Regulator 1 0.5 mA ≤ IR1≤ 250 mA 8.2 8.5 8.8 V output voltage Regulator 2 0.5 mA ≤ IR2≤ 140 mA 4.8 5.0 5.2 V output voltage Regulator 3 0.5 mA ≤ IR3≤ 50 mA 4.8 5 5.2 V

Note

1. Vbu (pin 8) supplied by VP2 with a 100 Ω series resistor and I

ORDERING INFORMATION

EXTENDED TYPE

NUMBER

TDA3602

(1)

PINS PIN POSITION MATERIAL CODE

9 SIL plastic SOT110

Note

1. SOT110-1; 1996 August 21.

REG3

PACKAGE

< 10 mA.

July 1994 3

Philips Semiconductors Product speciﬁcation

Multiple output voltage regulator TDA3602

handbook, full pagewidth

TDA3602

REG1

V 8.5 V

REGULATOR 1

REG2

V 5 V

REGULATOR 2

REG3

V 5 V

REGULATOR 3

hold

CONTROL

HOLD CIRCUIT

reset

MCD346 - 1

ground

Fig.1 Block diagram.

SCHMITT 

TRIGGER

POLARITY

LOADDUMP /

PROTECTION

V REVERSE

July 1994 4

SCHMITT 

TRIGGER

(back up)

5 V switched

Zener

(21 V)

> 2 V

R1,R2 on

STATE

L / H current

reset

CIRCUIT

CONTROL

(state control)

Philips Semiconductors Product speciﬁcation

Multiple output voltage regulator TDA3602

PINNING

SYMBOL PIN DESCRIPTION

1 positive supply voltage

REG1 2 Regulator 1 output RESET 3 reset output V

4 state control input

HOLD 5 hold output GND 6 ground REG3 7 Regulator 3 output V

8 back-up

REG2 9 Regulator 2 output

handbook, halfpage

REG1

RESET

HOLD

GND

REG3

REG2

3 4

TDA3602

5 6 7 8 9

MCD345

Fig.2 Pin configuration.

FUNCTIONAL DESCRIPTION

This multiple output voltage regulator contains three fixed voltage regulators, numbered 1, 2 and 3. Two of these can be switched between the on and off states using the state control pin (pin 4). The third (Regulator 3), which is continuously in, can be switched by the state control pin between a low and a high current mode.

In addition to Regulators 1 and 2, the device is supplied by an internal switch that is open when the supply voltage falls below the back-up voltage (negative field decay or engine start procedure), or during a load dump. (During this load dump, Regulators 1 and 2 are switched off and RESET is switched LOW). This switched supply voltage (the so-called back-up voltage (Vbu), is available at pin 8. An electrolytic capacitor can be connected to this pin, and the charge on this capacitor can be used to supply the device for a short period after the supply voltage is removed.

Three pins are provided for interfacing with a microprocessor:

• state control pin

• hold output pin

• reset output pin.

When the supply voltage (VP) is connected to the device, Vbu will rise. When Vbu reaches 7.9 V, the device is in the power-on mode. The RESET output goes HIGH and Regulator 3 is switched on. In a microprocessor application, the RESET output can be used to call up the CPU and to initialize the program.

What follows depends on the voltage at the state control pin (V

). In most applications, when the supply voltage is

connected, Vsc will rise slowly (e.g. by charging a capacitor).The device will leave the power-on mode and enter the reset mode when Vsc rises above 2.2 V. In both the power-on and reset modes, Regulator 3 will be in the high current mode, Regulators 1 and 2 will be switched off and the RESET output will be HIGH.

The device will enter the wake mode when Vsc reaches 2.8 V. The RESET pin will go LOW and the CPU must be switched to the sleep mode. Regulator 3 is still in the high current mode.

As Vsc continues rising and the voltage reaches 3.6 V, the stabilizer will be switched into the sleep mode. It will be in a coma mode when Vsc is greater than 3.8 V. In this mode, only the relevant circuits remain operating; this is to keep the power consumption as low as possible i.e. typically 290 µA.

If the device is switched on with Vsc already higher than 3.8 V, the device will be switched directly from the power-on mode into the coma mode.

When Vsc is lowered gradually from 3.6 V (or higher) to 2 V, the device will go from sleep to reset again.

Vsc must be lower than 1.1 V to bring the device into the on mode; note that this is not the same as the power-on mode. In this condition, Regulator 3 is in the high current mode, both Regulators 1 and 2 are switched on and the HOLD output will be HIGH (depending on the state of V and the in-regulation condition of Regulators 1 and 2).

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Philips Semiconductors Product speciﬁcation

Multiple output voltage regulator TDA3602

When the device is in the on mode, it will switch back to the reset mode when Vsc rises to 2 V, or when the supply voltage drops below 7.3 V.

When V

drops below 3 V, the device will return to the power off mode, regardless of the condition the device was in.

REG3

LIMITING VALUES

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

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

supply voltage

operating − 18 V jump start t ≤ 10 min − 30 V load dump t ≤ 50 ms; t Regulator 3 on V

> −3 V; note 1 − 30 V

load dump t ≤50 ms; t

≥ 2.5 ms − 50 V

≥ 2.5 ms; note 1 − 50 V

reverse battery voltage −6 − V

stg

tot

storage temperature non-operating −55 +150 °C virtual junction temperature operating −40 +150 °C reverse polarity non-operating − 6V total power dissipation − 15 W

Note

1. V

(pin 8) supplied by VP2 with a 100 Ω series resistor and I

REG3

< 10 mA.

THERMAL RESISTANCE

SYMBOL PARAMETER THERMAL RESISTANCE

R R

th j-a th j-c

from junction to ambient in free air 50 K/W from junction to case (see Fig.6) 12 K/W

CHARACTERISTICS

= 14.4 V; T

= 25 °C; measured in Fig.6; unless otherwise speciﬁed.

amb

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply

supply voltage

operating 9.2 14.4 18 V Regulator 3 on note 1 6.0 14.4 18 V jump start t ≤ 10 min −− 30 V load dump t ≤ 50 ms; t

quiescent current Vsc > 4V; note 2

= 12.4 V − 280 360 µA

= 14.4 V − 290 −µA

≥ 2.5 ms −− 50 V

July 1994 6

Philips Semiconductors Product speciﬁcation

Multiple output voltage regulator TDA3602

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Schmitt triggers

VP2SCHMITT TRIGGER (FOR HOLD AND REGULATORS 1 AND 2) V

thr

thf

REGULATOR 1SCHMITT TRIGGER (FOR HOLD) V

thr

thf

REGULATOR 2SCHMITT TRIGGER (FOR HOLD) V

thr

thf

VBU SCHMITT TRIGGER (REGULATOR 3) V

thr

thf

State control pin

thr1

thf1

hy1

thr2

thf2

hy2

thr3

thf3

hy3

scl

rising voltage threshold 7.3 7.6 8.0 V falling voltage threshold 6.8 7.1 7.5 V hysteresis − 0.5 − V

rising voltage threshold − VR1 − 0.2 − V falling voltage threshold − VR1 − 0.3 − V hysteresis − 0.1 − V

rising voltage threshold − VR2 − 0.2 − V falling voltage threshold − VR2 − 0.3 − V hysteresis − 0.1 − V

rising voltage threshold V falling voltage threshold V

REG3

7.3 7.9 8.4 V

2.5 3 3.5 V

hysteresis − 4.9 − V

voltage threshold between note 2 − V

+ 0.2 − V

thr1

sleep and coma voltage threshold wake to 3.35 3.6 3.85 V sleep voltage threshold sleep to 2.5 2.7 2.9 V wake hysteresis wake/sleep 0.85 0.92 1.0 V voltage threshold reset to 2.6 2.8 3.0 V wake

] voltage threshold wake to 1.75 1.9 2.05 V

reset hysteresis reset/wake 0.85 0.92 1.0 V voltage threshold on to reset 1.85 2.0 2.15 V voltage threshold reset to on 1.0 1.1 1.2 V hysteresis on/reset 0.85 0.92 1.0 V input current

≤ 0.8 V −− −1µA

≥ 4 V −− 1µA

July 1994 7

Philips Semiconductors Product speciﬁcation

Multiple output voltage regulator TDA3602

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Reset output

Hold output

Regulator 1 (I

REG1

∆V

REG1

∆V

REGL1

SVRR1 supply voltage ripple rejection f = 200 Hz;2 V (p-p) 60 −−dB V

REGd1

REGm1

REGsc1

Regulator 2 (I

REG2

∆V

REG2

∆V

REGL2

SVRR2 supply voltage ripple rejection f = 200 Hz; 2 V (p-p) 60 −−dB V

REGd2

REGm2

REGsc2

LOW level output voltage IOL = 0 0 0.2 0.8 V HIGH level output voltage 2.0 5.0 5.25 V LOW level output current VOL ≤ 0.8 V 0.3 0.8 − mA HIGH level output current VOH > 3 V −0.3 −2.0 − mA

LOW level output voltage IOL = 0 0 0.2 0.8 V HIGH level output voltage 2.0 5.0 5.25 V LOW level output current VOL ≤ 0.8 V; note 3 0.3 1.0 − mA HIGH level output current VOH > 3 V −1.5 −9.0 − mA

= 5 mA unless otherwise speciﬁed)

REG1

output voltage off Vsc > 2.1 V − 1 400 mV output voltage

0.5 V ≤ I 10 V ≤ V

≤ 250 mA 8.2 8.5 8.8 V

REG1

≤ 18 V 8.2 8.5 8.8 V

line regulation 10 V ≤ VP ≤ 18 V −− 50 mV load regulation 0.5 mA ≤ I

drop-out voltage I current limit V

= 250 mA −− 0.4 V

REG1

> 7 V; note 4 0.4 − 1.2 A

REG1

≤ 250 mA −− 50 mV

REG1

short-circuit current RL ≤ 0.5 Ω; note 4 − 250 − mA

= 10 mA unless otherwise speciﬁed)

REG2

output voltage off Vsc >2.1 V − 1 400 mV output voltage

0.5 V ≤ I 8 V ≤ V

≤ 140 mA 4.8 5.0 5.2 V

REG2

≤ 18 V 4.8 5.0 5.2 V

line regulation 8 V ≤ VP ≤ 18 V −− 50 mV load regulation 0.5 mA ≤ I

drop-out voltage I current limit V

= 140 mA − 1.2 − V

REG2

> 4.5 V; note 4 200 − 600 mA

REG2

≤ 140 mA −− 50 mV

REG2

short-circuit current RL ≤ 0.5 Ω; note 4 − 130 − mA

July 1994 8

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