Datasheet TDA3618JR-N1 Datasheet (Philips)

DATA SH EET

Preliminary specification
Supersedes data of 1999 Jul 13
File under Integrated Circuits, IC01

1999 Sep 01

INTEGRATED CIRCUITS

TDA3618JR

Multiple voltage regulator with
switch and ignition buffers

1999 Sep 01 2

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

FEATURES
General

• Extremely low noise behaviour and good stability with
very small output capacitors

• Two VP-state controlled regulators (regulators 1 and 3)
and a power switch

• Regulator 2, reset and ignition buffer operate during
load dump and thermal shutdown

• Separate control pins for switching regulators
(regulators 1 and 3) and the power switch

• Supply voltage range of −18 to +50 V

• Low reverse current of regulator 2

• Low quiescent current (when regulator 1, regulator 3

and power switch are switched off)

• Hold output for low VP (regulators 1 and 3 off)

• Hold output for regulators 1 and 3

• Hold output for foldback mode switch

• Hold output for load dump and temperature protection

• Reset and hold outputs (open collector outputs)

• Adjustable reset delay time

• High ripple rejection

• backup capacitor for regulator 2

• Two independentignition buffers (one inverted and with

open collector output).

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 short circuited)

• ESD protected on all pins

• Thermal protections with hysteresis

• Load dump protection

• Foldback current limit protection for

regulators 1, 2 and 3

• Delayed second current limit protection for the power
switch (at short circuit)

• The regulator outputs and the power switch are DC
short circuited safe to ground and VP.

GENERAL DESCRIPTION

TheTDA3618JR is a multiple outputvoltage regulator with
a power switch and ignition buffers, intended for use in car
radios with or without a microcontroller. It contains:

• Two fixed voltage regulators with a foldback current
protection (regulators 1 and 3) and one fixed voltage
regulator (regulator 2), intended to supply a
microcontroller, which also operates during load dump
and thermal shutdown

• A power switch with protections, operated by an enable
input

• Reset and hold outputs that can be used to interface
with the microcontroller. The reset signal can be used to
call up the microcontroller.

• A supply pin which can withstand load dump pulses and
negative supply voltages

• Regulator 2, which is switched on at a backup voltage
greater than 6.5 V and off when the output voltage of
regulator 2 drops below 1.9 V

• Aprovision for the useof a reserve supply capacitorthat
will hold enough energy for regulator 2 (5 V continuous)
to allow a microcontroller to prepare for loss of voltage

• An inverted ignition 1 input with open collector output
stage

• An ignition 2 input Schmitt trigger with push-pull output
stage.

ORDERING INFORMATION

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA3618JR DBS17P plastic DIL-bent-SIL (specially bent) power package;

17 leads (lead length 12 mm)

SOT475-1

1999 Sep 01 3

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

P

supply voltage

operating 11 14.4 18 V
reverse polarity non-operating −−18 V
regulator 2 on 2.4 14.4 50 V
jump start t ≤ 10 minutes −−30 V
load dump protection t ≤ 50 ms; t

r

≥ 2.5 ms −−50 V

I

q(tot)

total quiescent supply current standby mode − 310 400 µA

T

j

junction temperature −−150 °C

Voltage regulators

V

O(REG1)

output voltage of regulator 1 1 mA ≤ I

REG1

≤ 600 mA 8.5 9.0 9.5 V

V

O(REG2)

output voltage of regulator 2 0.5 mA ≤ I

REG2

≤ 150 mA; VP= 14.4 V 4.75 5.0 5.25 V

V

O(REG3)

output voltage of regulator 3 1 mA ≤ I

REG3

≤ 750 mA 4.75 5.0 5.25 V

Power switch

V

d

drop-out voltage ISW=1A − 0.45 0.7 V

I

SW

= 1.8 A − 1 1.8 V

I

M

peak current 3 −−A

1999 Sep 01 4

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

BLOCK DIAGRAM

handbook, full pagewidth

MGR928

REGULATOR 2

REGULATOR 3

REGULATOR 1

17

16

9

TEMPERATURE

LOAD DUMP

PROTECTION

1

11

4

10

13

14

POWER SWITCH

BACK-UP SWITCH

BACK-UP CONTROL

&

&

&

&

≥1

GND

(14.4 V)

TDA3618JR

RES

REG2

REG3

REG1

(14.2 V/3 A)

(14.2 V/100 mA)

(5 V/150 mA)

(5 V/750 mA)

(9 V/600 mA)

SW

V

P

ENSW

EN3

EN1

C

RES

BU

HOLD

12

2

IGNITION BUFFER

5

IGN2

OUT

IGN2

IN

7

INVERTER

6

IGN1

IN

8

3

15

V

thr

= 7 V, V

thf

= 4.5 V

IGN1

OUT

Fig.1 Block diagram.

1999 Sep 01 5

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

PINNING

SYMBOL PIN DESCRIPTION

V

P

1 supply voltage
REG1 2 regulator 1 output
REG3 3 regulator 3 output
EN3 4 enable input regulator 3
IGN2

IN

5 ignition 2 input
IGN1

IN

6 ignition 1 input
IGN1

OUT

7 ignition 1 output (active LOW)
IGN2

OUT

8 ignition 2 output
RES 9 reset output
EN1 10 enable input regulator 1
ENSW 11 enable input power switch
HOLD 12 hold output (active LOW)
C

RES

13 reset delay capacitor
GND 14 ground
REG2 15 regulator 2 output
BU 16 backup
SW 17 power switch output

Fig.2 Pin configuration.

handbook, halfpage

TDA3618JR

MGR929

V

P

REG1
REG3

EN3

IGN2

IN

IGN1

IN

IGN1

OUT

IGN2

OUT
RES

EN1

ENSW

HOLD
C

RES

GND

REG2

BU

SW

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17

1999 Sep 01 6

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

FUNCTIONAL DESCRIPTION

TheTDA3618JR is a multiple outputvoltage regulator with
a power switch, intended for use in car radios with or
without a microcontroller. Because of the low-voltage
operation of the car radio, low-voltage drop regulators are
used in the TDA3618JR.

Regulator 2 switches on when the backup voltage
exceeds 6.5 V for the first time and switches off again
when the output voltage of regulator 2 falls below 1.9 V
(this is far below an engine start). When regulator 2 is
switched on and its output voltage is within its voltage
range, the reset output is enabled (RES goes HIGH
through a pull-up resistor) to generate a reset to the
microcontroller. The reset cycles can be extended by an
external capacitor at pin 13. This start-up feature is
included to secure a smooth start-up of themicrocontroller
at first connection, without uncontrolled switching of
regulator 2 during the start-up sequence.

The charge of the backup capacitor can be used to supply
regulator 2 for a short period when the supply drops to 0 V
(the time depends on the value of the storage capacitor).
The output stages (regulators 1 and 3) of this regulator
have an extremely low noise behaviour and good stability.
Regulators 1 and 3 are stabilized by using small output
capacitors.

Whenboth regulator 2 and the supply voltage (VP> 4.5 V)
are available, regulators 1 and 3 can be operated by
means of enable inputs (pins 10 and 4 respectively).

TheHOLD output pin isnormally HIGH and is activeLOW.
The HOLD output pin is connected to an open collector
NPN transistor and must have an external pull-up resistor
to operate. The HOLD output is controlled by a LOW
detection circuit which, when activated, pulls the warning
output LOW (enabled). The hold outputs of the regulators
are connected to an OR gate inside the IC such that the
hold is activated (goes LOW) when the regulator voltages
of regulator 1 and/or regulator 3 are out of regulation for
any reason. Each regulator enable input controls its own
hold circuit, such that if a regulator is disabled or switched
off, the hold circuit for that regulator is disabled.

The hold is also controlled by the temperature and load
dump protection. Activating the temperature or load dump
protection causes a hold (LOW) during the time the
protection is activated. When all regulators are switched
off, the HOLD output is controlled by the battery line
(pin 1), temperature protection and load dump protection.

The hold is enabled (LOW) at low battery voltages. This
indicates that it is not possible to get regulator 1 into
regulation when switching it on. The hold function includes
hysteresis to avoid oscillations when the regulator voltage
crosses the hold threshold. The HOLD output becomes
alsoactive(LOW)whentheswitchisinfoldbackprotection
mode, see Fig.4 for a timing diagram. The block diagram
is given in Fig.3.

The power switch can also be controlled by means of a
separate enable input (pin 11).

All output pins are fully protected. The regulators are
protectedagainst load dump (regulators 1 and 3 switch off
at supply voltages >18 V) and short circuit (foldback
current protection).

The switch contains a current protection. However, this
protection is delayed at short circuit by the reset delay
capacitor. During this time, the output current is limited to
a peak value of at least 3 and 2 A continuous (VP≤ 18 V).

In the normal situation, the voltage on the reset delay
capacitor is about 3.5 V (depending on the temperature).
The switch output is about VP− 0.4 V. At operational
temperature, the switch can deliver at least 3 A. At high
temperature, the switch can deliver about 2 A. During an
overload condition or short circuit (VSW<VP−3.7 V), the
voltage on the reset delay capacitor rises 0.6 V above the
voltage of regulator 2. This rise time depends on the
capacitorconnectedontheC

RES

(pin 13).Duringthistime,
the switch can deliver more than 3 A. The charge current
of the reset delay capacitor is typically 4 µA and the
voltage swing about 1.5 V. When regulator 2 is out of
regulation and generates a reset, the switch can only
deliver 2 A and will go in the foldback protection without
delay. At supply voltages >17 V, the switch is clamped at
16 V maximum (to avoid externally connected circuits
being damaged by an overvoltage) and the switch will
switch off at load dump.

Interfacing with the microcontroller (simple full/semi on/off
logic applications) can be realized with two independent
ignition Schmitt triggers and ignition output buffers (one
open collector and one push-pull output). Ignition 1 output
is inverted.

The total timing diagrams are shown in Figs 4 and 5.

1999 Sep 01 7

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

handbook, full pagewidth

&

OR

OR

REGULATOR 1

low battery

detector

internal

voltage ref. 1

internal
voltage

ref. 2

enable

output stage

output stage

enable

out of

regulation

detector

out of

regulation

detector

REGULATOR 3

TDA3618JR

TEMPERATURE

PROTECTION

>150 °C

LOADDUMP

buffer

MGL792

V16

FOLDBACK

MODE

1

10

EN1

REG1

REG3

HOLD

V

P

EN3

4

12

3

2

Fig.3 Block diagram of the HOLD.

1999 Sep 01 8

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

handbook, full pagewidth

load dump

load dump

V

P

ignition 1

input

ignition 1

output

V

P

ignition 2

input

ignition 2

output

7.0 V

4.5 V

≥3.25 V

≥−100 V

5.0 V

≤50 V

≤1.1 V

≥2.2 V

≥−100 V

5.0 V

≤50 V

≤2.0 V

Enable Schmitt trigger ignition 1

Enable Schmitt trigger ignition 2

V

P

enable

regulator 3

enable

regulator 1

regulator 3

regulator 1

temperature

protection

150 °C

HOLD

>1.8 V
>1.3 V

LOW

HIGH

passive

active

>1.8 V
>1.3 V

MGR930

Fig.4 Timing diagram of ignition Schmitt triggers and HOLD.

1999 Sep 01 9

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

handbook, full pagewidth

V

P

V

BU

regulator 2

reset
delay

capacitor

reset

V

P

enable

regulator 1

regulator 1

regulator 3

enable

regulator 3

V

P

enable

power
switch

power
switch
output

6.5 V

5.4 V

5.0 V

1.9 V
0 V

5.0 V
0 V

18 V

10.4 V

7.0 V

4.0 V

≥2.2 V

10 V

0 V

load dump

5.0 V

0 V

16.9 V

7.0 V

4.0 V

16 V

0 V

3.0 V

6.0 V

≤2.0 V

≥2.2 V
≤2.0 V

≥2.2 V
≤2.0 V

load dump

load dump

MGK610

Power switch behaviour

VP and enable Schmitt trigger

Back-up Schmitt trigger and reset behaviour

Fig.5 Timing diagram of regulators and power switch.

1999 Sep 01 10

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

LIMITING VALUES

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

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

P

supply voltage

operating − 18 V
reverse polarity non-operating − 18 V
jump start t ≤ 10 minutes − 30 V
load dump protection t ≤ 50 ms; t

r

≥ 2.5 ms − 50 V

P

tot

total power dissipation − 62 W

T

stg

storage temperature non-operating −55 +150 °C

T

amb

ambient temperature operating −40 +85 °C

T

j

junction temperature operating −40 +150 °C

SYMBOL PARAMETER CONDITIONS VALUE UNIT

R

th(j-c)

thermal resistance from junction to case 2 K/W

R

th(j-a)

thermal resistance from junction to ambient in free air 50 K/W

1999 Sep 01 11

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

CHARACTERISTICS

VP= 14.4 V; T

amb

=25°C; see Fig.8; unless otherwise specified.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supplies

V

P

supply voltage

operating 11 14.4 18 V
regulator 2 on note 1 2.4 14.4 18 V
jump start t ≤ 10 minutes −− 30 V
load dump protection t ≤ 50 ms; t

r

≥ 2.5 ms −− 50 V

I

q

quiescent supply current VP= 12.4 V; note 2;

I

REG2

= 0.1 mA

− 310 400 µA

V

P

= 14.4 V; note 2;

I

REG2

= 0.1 mA

− 315 −µA

Schmitt trigger for power supply of switch, regulators 1 and 3

V

thr

rising threshold voltage 6.5 7.0 7.5 V

V

thf

falling threshold voltage 4.0 4.5 5.0 V

V

hys

hysteresis voltage − 2.5 − V

Schmitt trigger for regulator 2

V

thr

rising threshold voltage 6.0 6.5 7.1 V

V

thf

falling threshold voltage 1.7 1.9 2.3 V

V

hys

hysteresis voltage − 4.6 − V

Schmitt trigger for enable input (regulators 1, 3 and switch)

V

thr

rising threshold voltage 1.4 1.8 2.4 V

V

thf

falling threshold voltage 0.9 1.3 1.9 V

V

hys

hysteresis voltage I

REG=ISW

=1mA − 0.5 − V

I

LI

input leakage current Ven=5V 1 5 10 µA

Reset trigger level of regulator 2

V

thr

rising threshold voltage VPrising; I

REG1

= 50 mA;

note 3

4.5 V

REG2

− 0.15 V

REG2

− 0.1 V

Schmitt triggers for HOLD output

V

thr1

rising threshold voltage of
regulator 1

VPrising; note 3 − V

REG1

− 0.15 V

REG1

− 0.075 V

V

thf1

fallingthreshold voltage of
regulator 1

VPfalling; note 3 8.1 V

REG1

− 0.35 − V

V

hys1

hysteresis voltage due to
regulator 1

− 0.2 − V

V

thr3

rising threshold voltage of
regulator 3

VPrising; note 3 − V

REG3

− 0.15 V

REG3

− 0.075 V

V

thf3

fallingthreshold voltage of
regulator 3

VPfalling; note 3 4.1 V

REG3

− 0.35 − V

V

hys3

hysteresis voltage due to
regulator 3

− 0.2 − V

1999 Sep 01 12

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

V

thr(VP)

rising threshold voltage of
supply voltage

Ven= 0 V 9.1 9.7 10.3 V

V

thf(VP)

fallingthreshold voltage of
supply voltage

Ven= 0 V 9.0 9.4 9.8 V

V

hys

hysteresis voltage of
supply voltage

Ven=0V − 0.3 − V

Reset and hold buffer

I

sinkL

LOW-level sink current V

RES/HOLD

≤ 0.8 V 2 −−mA

I

LO

output leakage current VP= 14.4 V;

V

RES/HOLD

=5V

− 0.1 5 µA

t

r

rise time note 4 − 750µs

t

f

fall time note 4 − 150µs

Reset delay

I

ch

charge current 2 4 8 µA

I

dch

discharge current 500 800 −µA

V

thr(RES)

rising voltage threshold
reset signal

2.5 3.0 3.5 V

t

d(RES)

delay time reset signal C = 47 nF; note 5 20 35 70 ms

V

thr(SW)

rising voltage threshold
switch foldback protection

− V

REG2

− V

t

d(SW)

delaytime switch foldback
protection

C = 47 nF; note 6 8 17.6 40 ms

Regulator 1 (I

REG1

= 5 mA; unless otherwise specified)

V

O(off)

output voltage off − 1 400 mV

V

O(REG1)

output voltage 1 mA ≤ I

REG1

≤ 600 mA 8.5 9.0 9.5 V

12 V ≤ V

P

≤ 18 V 8.5 9.0 9.5 V

∆V line regulation 12 V ≤ V

P

≤ 18 V − 275mV

∆V

L

load regulation 1 mA ≤ I

REG1

≤ 600 mA − 20 100 mV

I

q

quiescent current IR1= 600 mA − 25 60 mA

SVRR supply voltage ripple

rejection

f

i

= 3 kHz; V

i(p-p)

=2V 60 70 − dB

V

d

drop-out voltage I

REG1

= 550 mA;

VP= 9.5 V; note 7

− 0.4 0.7 V

I

REG1m

current limit V

REG1

> 8.5 V; note 8 0.65 1.2 − A

I

REG1sc

short-circuit current RL≤ 0.5 Ω; note 9 250 800 − mA

Regulator 2 (I

REG2

= 5 mA; unless otherwise specified)

V

O(REG2)

output voltage 0.5 mA ≤ I

REG2

≤ 300 mA 4.75 5.0 5.25 V

8V≤V

P

≤18 V 4.75 5.0 5.25 V

18 V ≤ V

P

≤ 50 V;

I

REG2

≤ 150 mA

4.75 5.0 5.25 V

∆V line regulation 6 V ≤ V

P

≤ 18 V − 250mV

6V≤V

P

≤50 V − 15 75 mV

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1999 Sep 01 13

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

∆V

L

load regulation 1 mA ≤ I

REG2

≤ 150 mA − 20 50 mV

1mA≤I

REG2

≤ 300 mA −− 100 mV

SVRR supply voltage ripple

rejection

f = 3 kHz; V

i(p-p)

=2V 60 70 − dB

V

d

drop-out voltage I

REG2

= 100 mA;

VP= 4.75 V; note 7

− 0.4 0.6 V

I

REG2

= 200 mA;

VP= 5.75 V; note 7

− 0.8 1.2 V

I

REG2

= 100 mA;

Vbu= 4.75 V; note 10

− 0.2 0.5 V

I

REG2

= 200 mA;

Vbu= 5.75 V; note 10

− 0.8 1.0 V

I

REG2m

current limit V

REG2

> 4.5 V; note 8 0.32 0.37 − A

I

REG2sc

short-circuit current RL≤ 0.5 Ω; note 9 20 100 − mA

Regulator 3 (I

REG3

= 5 mA; unless otherwise specified)

V

O(off)

output voltage off − 1 400 mV

V

O(REG3)

output voltage 1 mA ≤ I

REG3

≤ 750 mA 4.75 5.0 5.25 V

7V≤V

P

≤18 V 4.75 5.0 5.25 V

∆V line regulation 7 V ≤ V

P

≤ 18 V − 250mV

∆V

L

load regulation 1 mA ≤ I

REG3

≤ 750 mA − 20 100 mV

I

q

quiescent current IR3= 750 mA − 19 45 mA

SVRR supply voltage ripple

rejection

f

i

= 3 kHz; V

i(p-p)

=2V 60 70 − dB

V

d

drop-out voltage I

REG3

= 500 mA;

VP= 5.75 V; note 7

− 1 1.5 V

I

REG3m

current limit V

REG3

> 4.5 V; note 8 0.80 0.90 − A

I

REG3sc

short-circuit current RL≤ 0.5 Ω; note 9 100 400 − mA

Power switch

V

d

drop-out voltage ISW= 1 A; VP= 13.5 V;

note 11

− 0.45 0.70 V

I

SW

= 1.8 A; VP= 13.5 V;

note 11

− 1.0 1.8 V

I

dc

continuous current VP= 16 V; VSW= 13.5 V 1.8 2.0 − A

V

clamp

clamping voltage VP≥ 17 V 13.5 15.0 16.0 V

I

M

peak current VP= 17 V; notes 6, 12, 13 3 −−A

V

fb

fly back voltage behaviour ISW= −100 mA − VP+ 3 22 V

I

sc

short-circuit current VP= 14.4 V; VSW< 1.2 V;

note 13

− 0.8 − A

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1999 Sep 01 14

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

backup switch

I

dc

continuous current 0.3 0.35 − A

V

clamp

clamping voltage VP≥ 16.7 V −− 16 V

I

r

reverse current VP=0V; Vbu= 12.4 V −− 900 µA

Schmitt trigger for enable input of ignition 1

V

thr

rising threshold voltage of
ignition 1 input

2.75 3.25 3.75 V

V

thf

fallingthreshold voltage of
ignition 1 input

0.8 − 1.3 V

V

hys

hysteresis voltage 1.5 −−V

I

LI

input leakage current V

IGN1IN

=5V −− 1.0 µA

I

I(clamp)

input clamping current V

IGN1IN

>50V −− 50 mA

V

IH(clamp)

HIGH-levelinputclamping
voltage

V

P

− 50 V

V

IL(clamp)

LOW-level input clamping
voltage

−0.6 − 0V

Schmitt trigger for power supply of ignition 1

V

thr

rising threshold voltage 6.5 7.0 7.5 V

V

thf

falling threshold voltage note 14 4.0 4.5 5.0 V

Ignition 1 buffer

V

OL

LOW-level output voltage I

IGN1OUT

= 0 mA 0 0.2 0.8 V

I

OL

LOW-level output current V

IGN1OUT

≤ 0.8 V 0.45 0.8 − mA

I

LO

output leakage current V

IGN1OUT

=5V;

V

IGN1IN

=0V

−− 1.0 µA

t

PLH

LOW-to-HIGH
propagation time

V

IGN1IN

rising from

0.8 to 3.75 V

−− 500 µs

t

PHL

HIGH-to-LOW
propagation time

V

IGN1IN

falling from

3.75 to 0.8 V

−− 500 µs

Schmitt trigger for enable input of ignition 2

V

thr

rising threshold voltage of
ignition 2 input

VP> 3.5 V 1.9 2.2 2.5 V

V

thf

fallingthreshold voltage of
ignition 2 input

VP> 3.5 V 1.7 2.0 2.3 V

V

hys

hysteresis voltage VP> 3.5 V 0.1 0.2 0.5 V

I

LI

input leakage current V

IGN2IN

=5V −− 1.0 µA

I

I(clamp)

input clamp current V

IGN2IN

>50V −− 50 mA

V

IH(clamp)

HIGH-levelinputclamping
voltage

V

P

− 50 V

V

IL(clamp)

LOW-level input clamping
voltage

−0.6 − 0V

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1999 Sep 01 15

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

Notes

1. Minimum operating voltage, only if VP has exceeded 6.5 V.

2. The quiescent current is measured in the standby mode. Therefore, the enable inputs of regulators 1, 3 and the
power switch are grounded and R

L(REG2)

= ∞ (see Fig.8).

3. The voltage of the regulator drops as a result of a VP drop.

4. The rise and fall times are measured with a 10 kΩ pull-up resistor and a 50 pF load capacitor.

5. The delay time depends on the value of the capacitor:

6. The delay time depends on the value of the reset delay capacitor:

7. The drop-out voltage of regulators 1, 2 and 3 is measured between VP and REGn.

8. At current limit, I

REGmn

is held constant (see Fig.6 for the behaviour of I

REGmn

).

9. The foldback current protection limits the dissipated power at short circuit (see Fig.6).

10. The drop-out voltage measured between BU and REG2.

11. The drop-out voltage of the power switch is measured between VPand SW.

12. The maximum output current of the switch is limited to 1.8 A when the supply voltage exceeds 18 V. A test mode is
built in. The delay time of the switch is disabled when a voltage of VP+ 1 V is applied to the switch-enable input.

13. At short circuit, Iscof the power switch is held constant to a lower value than the continuous current after a delay of
at least 10 ms. A test-mode is built in. The delay time of the switch is disabled when a voltage of VP+ 1 V is applied
to the switch-enable input.

14. V

IGN1OUT

= LOW for V

IGN1OUT

> 1.2 V or V

EN1

> 1.3 V or V

EN3

> 1.3 V or V

ENSW

> 1.3 V.

Ignition 2 buffer

V

OL

LOW-level output voltage I

IGN2OUT

= 0 mA 0 0.2 0.8 V

V

OH

HIGH-level output voltage I

IGN2OUT

= 0 mA 4.5 5.0 5.25 V

I

OL

LOW-level output current V

IGN2OUT

≤ 0.8 V 0.45 0.8 − mA

I

OH

HIGH-level output current V

IGN2OUT

≥ 4.5 V −0.45 −2.0 − mA

I

LO

output leakage current
(source)

V

IGN2OUT

=5V;

V

IGN2IN

=0V

−− 1.0 µA

t

PLH

LOW-to-HIGH
propagation time

V

IGN2IN

rising from

1.7 to 2.5 V

−− 500 µs

t

PHL

HIGH-to-LOW
propagation time

V

IGN2IN

falling from

2.5 to 1.7 V

−− 500 µs

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

t

d

C

I

ch

------

V

C(th)

× C 750 103×()× s[]==

t

d_high current

C

I

ch

------ -

V

Cth()

× C 375 103×()× s[]==

1999 Sep 01 16

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

Fig.6 Foldback current protection of the regulators.

a. Regulator 1.

b. Regulator 2.

handbook, halfpage

MBK946

9 V

I

REG1sc

I

REG1

I

REG1m

V

O(REG1)

handbook, halfpage

MGL599

5.0 V

I

REG3sc

I

REG3

I

REG3m

V

O(REG3)

handbook, halfpage

MGL598

5.0 V

I

REG2sc

I

REG2

I

REG2m

V

O(REG2)

handbook, full pagewidth

>1.8 A >3 A1 A

generates

hold

MGR931

VP − 3.3 V

2V

BE

I

sw

V

sw

not

delayed

delayed

Fig.7 Current protection of the power switch.

1999 Sep 01 17

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

TEST AND APPLICATION INFORMATION
Test information

handbook, full pagewidth

MGR932

enable input regulator 3

reset delay

capacitor

reset
output

C3
10 µF

C2
220 nF

C1

220 nF

C4
10 µF

ignition 1
output

ignition 2
output

R2
10 kΩ

R

L(REG2)

5 kΩ

R

L(SW)

12 kΩ

5 V

5 V

10 V

regulator 3
output

regulator 1
output

regulator 2
output

C5
10 µF

C6
1 µF

C7
47 nF

R

L(REG1)

10 kΩ

R

L(REG3)

5 kΩ

power switch output

17

15

2

7

8

hold
output

12

9

3

4

13

16

11

1

14

TDA3618JR

ground

V

P

supply voltage

V

ENSW

V

EN3

enable input regulator 1

enable input power switch

10

V

EN1

back-up

ignition 2

input

10 kΩ

R6

C10
1 nF

ignition 1

input

5

6

V

IGN2

10 kΩ

R5

C9
1 nF

V

IGN1

C8

V

bu

R3
10 kΩ

R4
10 kΩ

Fig.8 Test circuit.

1999 Sep 01 18

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

Application information

NOISE

Table 1 Noise figures

Note

1. Measured at a bandwidth of 200 kHz.

The noise on the supply line depends on the value of the
supply capacitor and is caused by a current noise (the
output noise of the regulators is translated to a current
noise by the output capacitors). When a high frequency
capacitorof 220 nF in parallel with an electrolytic capacitor
of 100 µF is connected directly to pins 1 and 14 (supply
and ground), the noise is minimal.

S

TABILITY

Theregulators are stabilized with theexternallyconnected
output capacitors.

Theoutput capacitors can be selected by using the graphs
of Figs 9 and 10. When an electrolytic capacitor is used,
the temperature behaviour of this output capacitor can
causeoscillationsatalowtemperature.Thetwo examples
below show how an output capacitor value is selected.

Example 1

Regulators 1 and 3 are stabilized with an electrolytic
output capacitor of 220 µF (ESR = 0.15 Ω). At −30 °C, the
capacitor value is decreased to 73 µF and the ESR is
increased to 1.1 Ω. The regulator remains stable at

−30 °C.

Example 2

Regulator 2 is stabilized with a 10 µF electrolyticcapacitor
(ESR = 3 Ω). At −30 °C, the capacitor value is decreased
to 3 µF and the ESR is increased to 23.1 Ω. Using Fig.10,
the regulator will be instable at −30 °C.

Solution

To avoid problems with stability at low temperatures, the
use of tantalum capacitors is recommended. Use a
tantalum capacitor of 10 µF or a larger electrolytic
capacitor.

REGULATOR

NOISE FIGURE (µV)

(1)

Co=10µFCo=47µFCo= 100 µF

1 tbf 150 tbf
2 tbf 150 tbf
3 tbf 200 tbf

Fig.9 Curve for selecting the value of output

capacitor for regulators 1 and 3.

handbook, halfpage

0

0.1

1

10

C (µF)

MGK612

stable region

maximum ESR

100

R

(Ω)

20

15

10

5

Fig.10 Curve for selecting the value of output

capacitor for regulator 2.

handbook, halfpage

2
0

0.22

110

C (µF)

MGK613

4

6

8

10

12

stable region

maximum ESR

minimum ESR

100

R

(Ω)

14

1999 Sep 01 19

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

PACKAGE OUTLINE

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION

ISSUE DATE

97-05-20

IEC JEDEC EIAJ

DIMENSIONS (mm are the original dimensions)

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

SOT475-1

0 5 10 mm

scale

D

L

E

A

c

A

2

L

3

Q

w M

b

p

1

d

D

Z

e

e

x

h

117

j

E

h

non-concave

DBS17P: plastic DIL-bent-SIL (special bent) power package; 17 leads (lead length 12 mm)

SOT475-1

view B: mounting base side

m

2

e

v M

B

UNIT A e

1

A2bpcD

(1)

E

(1)

Z

(1)

deD

h

LL3m

mm

17.0

15.5

4.6

4.2

0.75

0.60

0.48

0.38

24.0

23.6

20.0

19.6

10 2.54

v

0.8

12.2

11.8

1.27

e

2

5.08

2.4

1.6

E

h

6

2.00

1.45

2.1

1.8

3.4

3.1

4.3

12.4

11.0

Qj

0.4w0.03

x

1999 Sep 01 20

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

SOLDERING
Introduction to soldering through-hole mount

packages

This text gives a brief insight to wave, dip and manual
soldering.Amorein-depth account of soldering ICs can be
found in our

“Data Handbook IC26; Integrated Circuit

Packages”

(document order number 9398 652 90011).

Wave soldering is the preferred method for mounting of
through-hole mount IC packages on a printed-circuit
board.

Soldering by dipping or by solder wave

The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joints for more than 5 seconds.

Thetotalcontacttimeofsuccessivesolderwavesmustnot
exceed 5 seconds.

The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T

stg(max)

). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.

Manual soldering

Apply the soldering iron (24 V or less) to the lead(s) of the
package, either below the seating plane or not more than
2 mm above it. If the temperature of the soldering iron bit
is less than 300 °C it may remain in contact for up to
10 seconds. If the bit temperature is between
300 and 400 °C, contact may be up to 5 seconds.

Suitability of through-hole mount IC packages for dipping and wave soldering methods

Note

1. For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board.

DEFINITIONS

LIFE SUPPORT APPLICATIONS

These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.

PACKAGE

SOLDERING METHOD

DIPPING WAVE

DBS, DIP, HDIP, SDIP, SIL suitable suitable

(1)

Data sheet status

Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information

Where application information is given, it is advisory and does not form part of the specification.

1999 Sep 01 21

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

NOTES

1999 Sep 01 22

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

NOTES

1999 Sep 01 23

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TDA3618JR

NOTES

© Philips Electronics N.V. SCA
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.

The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.

Internet: http://www.semiconductors.philips.com

1999

67

Philips Semiconductors – a w orldwide compan y

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Printed in The Netherlands 545002/02/pp24 Date of release: 1999 Sep 01 Document order number: 9397 750 06265