Datasheet TDA3618JR Datasheet (Philips)

INTEGRATED CIRCUITS

DATA SH EET

TDA3618JR

Multiple voltage regulator with
switch and ignition buffers

Preliminary specification
Supersedes data of 1999 Sep 01
File under Integrated Circuits, IC01

2001 Jun 07

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

FEATURES
General

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

• Two VP-state controlled regulators and a power switch

• Regulator 2, reset and ignition buffer operate during

load dump and thermal shutdown

• Separate control pins for switching regulator 1,
regulator 3 and the power switch

• Supply voltage range from −18 to +50 V

• Low reverse current of regulator 2

• Lowquiescentcurrentwhenregulator 1,regulator 3and

power switch are switched off

• Hold output for low V

• Hold output for regulators 1 and 3

• Hold output for foldback mode switch

• Hold output for load dump and temperature protection

• Reset and hold (open collector) outputs

• Adjustable reset delay time

• High ripple rejection

• Backup capacitor for regulator 2

• Two independent ignition buffers, one inverted and with

open-collector output.

Protection

• Reverse polarity safe, down to −18 V

• Able to withstand voltages up to 18 V at the outputs and

the supply line may be short-circuited

• ESD protected on all pins

• Thermal protections with hysteresis

• Load dump protection

P

• Foldback current limit protection for

• Delayed second current limit protection for the power

• The regulator outputs and the power switch are

GENERAL DESCRIPTION

TheTDA3618JR is a multiple output voltageregulator 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 foldback current

• A power switch with protection, operated by an enable

• Reset and hold outputs that can be used to interface

• A supply pin that can withstand load dump pulses and

• Regulator 2, which is switched on at a backup voltage

• Aprovision for the use ofa reserve supply capacitor that

• An inverted ignition 1 input with open-collector output

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

TDA3618JR

regulators 1, 2 and 3

switch at short-circuit

DC short-circuit safe to ground and VP.

protection (regulators 1 and 3) and one fixed voltage
regulator (regulator 2) intended to supply a
microcontroller, that also operates during load dump
and thermal shutdown

input

with the microcontroller; the reset signal can be used to
wake up the microcontroller

negative supply voltages

greater than 6.5 V and off when the output voltage of
regulator 2 drops below 1.9 V

will hold enough energy for regulator 2 (5 V continuous)
to allow a microcontroller to prepare for loss of voltage

stage

stage.

2001 Jun 07 2

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and

TDA3618JR

ignition buffers

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

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

17 leads (lead length 12 mm)

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 for t ≤ 10 minutes −−30 V
load dump protection for t ≤ 50 ms

and t

≥ 2.5 ms

r

I

q(tot)

T

j

total quiescent supply current standby mode − 310 400 µA
junction temperature −−150 °C

Voltage regulators

V

O(REG1)

V

O(REG2)

output voltage of regulator 1 1 mA ≤ I
output voltage of regulator 2 0.5 mA ≤ I

VP= 14.4 V

V

O(REG3)

output voltage of regulator 3 1 mA ≤ I

Power switch

V

I

drop

M

drop-out voltage ISW=1A − 0.45 0.7 V

I

= 1.8 A − 1 1.8 V

SW

peak current 3 −−A

PACKAGE

−−50 V

≤ 600 mA 8.5 9.0 9.5 V

REG1

≤ 150 mA;

REG2

≤ 750 mA 4.75 5.0 5.25 V

REG3

4.75 5.0 5.25 V

SOT475-1

2001 Jun 07 3

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

BLOCK DIAGRAM

handbook, full pagewidth

V

V

ENSW

th(r)

= 7 V, V

1

P

11

th(f)

= 4.5 V

POWER SWITCH

&

BACK-UP SWITCH

BACK-UP CONTROL

TEMPERATURE

LOAD DUMP

PROTECTION

TDA3618JR

17

SW

16

BU

C

RES

IGN2

IGN1

EN3

EN1

IN

IN

15

REGULATOR 2

4

&

REGULATOR 3

REG2

3

REG3

TDA3618JR

10

≥1

13

&

5

6

IGNITION BUFFER

INVERTER

REGULATOR 1

&

2

REG1

12

HOLD

9

RES

8

IGN2
IGN1

OUT
OUT

7

Fig.1 Block diagram.

2001 Jun 07 4

14

GND

MGR928

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

PINNING

SYMBOL PIN DESCRIPTION

V

P

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

IN

IGN1

IN

IGN1

OUT

IGN2

OUT

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

RES

GND 14 ground
REG2 15 regulator 2 output
BU 16 backup output
SW 17 power switch output

1 supply voltage

5 ignition 2 input
6 ignition 1 input
7 ignition 1 output (active LOW)
8 ignition 2 output

13 reset delay capacitor

handbook, halfpage

IGN2

IGN1
IGN1
IGN2

V

REG1
REG3

EN3

OUT
OUT

RES

EN1

ENSW

HOLD
C

RES

GND

REG2

BU

SW

P

IN
IN

10
11
12
13
14
15
16
17

1
2
3
4
5
6
7
8
9

TDA3618JR

TDA3618JR

MGR929

2001 Jun 07 5

Fig.2 Pin configuration.

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

FUNCTIONAL DESCRIPTION

TheTDA3618JR is a multiple output voltageregulator 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 to generate a reset to
themicrocontroller. The reset cycle can be extended by an
external capacitor at pin C
built-in to secure a smooth start-up of the microcontroller
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 thesupply drops to 0 V
(the time depends on the value of the storage capacitor).

Theoutputstagesofregulators 1 and 3 have an extremely
low noise behaviour and good stability. These regulators
are stabilized by using small output capacitors.

Whenboth regulator 2 and the supplyvoltage (VP> 4.5 V)
are available, regulators 1 and 3 can be operated by
means of enable inputs (pins EN1 and EN3 respectively).

Pin HOLD is normally HIGH and is active LOW. Pin HOLD
isconnected to an open-collector NPN transistorand must
have an external pull-up resistor to operate. The hold
output is controlled by a low voltage detection circuit
which, when activated, pulls the warning output LOW
(enabled). The detection outputs of the regulators are
connected to an OR gate inside the IC such that the hold
output 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 detection circuit, such that if a regulator is
disabled or switched off, the detection circuit for that
regulator is disabled.

The hold circuit 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, pin HOLD is controlled by the battery line (pin VP),
temperature protection and load dump protection.

. The start-up feature is

RES

TDA3618JR

The hold output 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. Pin HOLDalso becomes LOW
when the switch is in foldback protection mode; see Fig.4
for a timing diagram. The hold circuit block diagram is
given in Fig.3.

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

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 A and continuous current of 2 A
(VP≤ 18 V).

In the normal situation, the voltage on the reset delay
capacitor is approximately 3.5 V (depending on
temperature). The switch output is approximately
VP− 0.4 V. At operational temperature, the switch can
deliver at least 3 A. At high temperature, the switch can
deliver approximately 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 capacitor
connected to pin C
deliver more than 3 A. The charge current of the reset
delay capacitor is typically 4 µA and the voltage swing
approximately 1.5 V. When regulator 2 is out of regulation
and generates a reset, the switch can only deliver 2 A and
will go into the foldback protection withoutdelay. 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 or 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 timing diagrams are shown in Figs 4 and 5.

. During this time, the switch can

RES

2001 Jun 07 6

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

handbook, full pagewidth

1

V

P

V

V

ref2

low battery

detector

ref1

output stage

TDA3618JR

TDA3618JR

2

REG1

&

EN1

EN3

out of

regulation

10

4

enable

enable

detector

REGULATOR 1

output stage

out of

regulation

detector

REGULATOR 3

OR

TEMPERATURE

PROTECTION

>150 °C

LOAD DUMP

V16

FOLDBACK

MODE

OR

buffer

MGL792

3

REG3

12

HOLD

Fig.3 Block diagram of the hold circuit.

2001 Jun 07 7

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

handbook, full pagewidth

V

7.0 V

P

4.5 V

ignition 1

input

ignition 1

output

≤50 V

≥3.25 V

≤1.1 V

≥−100 V

5.0 V

0.2 V

Schmitt trigger ignition 1

load dump

V

P

TDA3618JR

load dump

ignition 2

input

ignition 2

output

V

P

enable

regulator 3

enable

regulator 1

regulator 3

regulator 1

temperature

protection

150 °C

HOLD

≤50 V
≥2.2 V

≤2.0 V

≥−100 V

5.0 V

0.2 V

Schmitt trigger ignition 2

>1.8 V
<1.3 V

>1.8 V
<1.3 V

active

passive

HIGH

LOW

Hold output

Fig.4 Timing diagram of ignition Schmitt triggers and hold output.

2001 Jun 07 8

MGR930

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

handbook, full pagewidth

V

P

V

BU

regulator 2

reset
delay

capacitor

reset

V

P

enable

regulator 1

6.5 V

5.4 V

5.0 V

1.9 V
0 V

5.0 V

3.0 V
0 V

5.0 V

18 V

10.4 V

7.0 V

4.0 V

>1.8 V
<1.3 V

load dump

Backup Schmitt trigger and reset behaviour

load dump

TDA3618JR

regulator 1

enable

regulator 3

regulator 3

V

P

enable

power
switch

power
switch
output

9 V

0 V

>1.8 V
<1.3 V

5.0 V

0 V

16.9 V

7.0 V

4.0 V

>1.8 V
<1.3 V

16 V

0 V

VP and enable Schmitt trigger

load dump

Power switch behaviour

MGK610

Fig.5 Timing diagram of regulators and power switch.

2001 Jun 07 9

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and

TDA3618JR

ignition buffers

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 60134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

P

P

tot

T

stg

T

amb

T

j

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS VALUE UNIT

R

th(j-c)

R

th(j-a)

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

≥ 2.5 ms − 50 V

r

total power dissipation − 62 W
storage temperature non-operating −55 +150 °C
ambient temperature operating −40 +85 °C
junction temperature operating −40 +150 °C

thermal resistance from junction to case 2 K/W
thermal resistance from junction to ambient in free air 50 K/W

2001 Jun 07 10

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and

TDA3618JR

ignition buffers

CHARACTERISTICS

VP= 14.4 V; T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supplies

V

P

I

q(tot)

Schmitt trigger for regulator 1, regulator 3 and the power switch

V

th(r)

V

th(f)

V

hys

Schmitt trigger for regulator 2

V

th(r)

V

th(f)

V

hys

Schmitt trigger for enable inputs (regulator 1, regulator 3 and power switch)

V

th(r)

V

th(f)

V

hys

I

LI

Reset trigger level of regulator 2

V

th(r)

Schmitt triggers for HOLD output

V

th(r)(REG1)

V

th(f)(REG1)

V

hys(REG1)

V

th(r)(REG3)

V

th(f)(REG3)

V

hys(REG3)

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

amb

supply voltages operating 11 14.4 18 V

regulator 2 on; note 1 2.4 14.4 18 V
jump start; t ≤ 10 minutes −− 30 V

total quiescent supply
current

load dump protection;
t ≤ 50 ms; t

≥ 2.5 ms

r

VP= 12.4 V;
I

= 0.1 mA; note 2

REG2

V

= 14.4 V;

P

= 0.1 mA; note 2

I

REG2

−− 50 V

− 310 400 µA

− 315 −µA

rising threshold voltage 6.5 7.0 7.5 V
falling threshold voltage 4.0 4.5 5.0 V
hysteresis voltage − 2.5 − V

rising threshold voltage 6.0 6.5 7.1 V
falling threshold voltage 1.7 1.9 2.3 V
hysteresis voltage − 4.6 − V

rising threshold voltage 1.4 1.8 2.4 V
falling threshold voltage 0.9 1.3 1.9 V
hysteresis voltage I

REG=ISW

=1mA − 0.5 − V

input leakage current VEN=5V 1 5 10 µA

rising threshold voltage VPrising; I

REG1

= 50 mA;

4.5 V

O(REG2)

− 0.15 V

O(REG2)

− 0.1 V

note 3

rising threshold voltage

VPrising; note 3 − V

O(REG1)

− 0.15 V

O(REG1)

− 0.075 V

of regulator 1
falling threshold voltage

VPfalling; note 3 8.1 V

O(REG1)

− 0.35 − V

of regulator 1
hysteresis voltage due

− 0.2 − V

to regulator 1
rising threshold voltage

VPrising; note 3 − V

O(REG3)

− 0.15 V

O(REG3)

− 0.075 V

of regulator 3
falling threshold voltage

VPfalling; note 3 4.1 V

O(REG3)

− 0.35 − V

of regulator 3
hysteresis voltage due

− 0.2 − V

to regulator 3

2001 Jun 07 11

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and

TDA3618JR

ignition buffers

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

th(r)(VP)

V

th(f)(VP)

V

hys(VP)

Reset and hold buffer

I

sink(L)

I

LO

t

r

t

f

Reset delay

I

ch

I

dch

V

th(r)(RES)

t

d(RES)

V

th(r)(SW)

t

d(SW)

Regulator 1 (I

V

O(off)

V

O(REG1)

∆V

line

∆V

load

I

q

SVRR supply voltage ripple

V

drop

I

lim

I

sc

Regulator 2 (I

V

O(REG2)

rising threshold voltage

VEN= 0 V 9.1 9.7 10.3 V

of supply voltage
falling threshold voltage

VEN= 0 V 9.0 9.4 9.8 V

of supply voltage
hysteresis voltage of

VEN=0V − 0.3 − V

supply voltage

LOW-level sink current V

output leakage current VP= 14.4 V; V

V

V

RES
HOLD

HOLD

≤ 0.8 V;

≤ 0.8 V

=5V

RES

=5V;

2 −−mA

− 0.1 5 µA

rise time note 4 − 750µs
fall time note 4 − 150µs

charge current 2 4 8 µA
discharge current 500 800 −µA
rising voltage threshold

2.5 3.0 3.5 V

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

− V

O(REG2)

− V
switch foldback
protection

delay time switch

C = 47 nF; note 6 8 17.6 40 ms

foldback protection

= 5 mA; unless otherwise specified)

REG1

output voltage off − 1 400 mV
output voltage 1 mA ≤ I

12 V ≤ V

≤ 600 mA 8.5 9.0 9.5 V

REG1

≤ 18 V 8.5 9.0 9.5 V

P

line regulation 12 V ≤ VP≤ 18 V − 275mV
load regulation 1 mA ≤ I
quiescent current I

= 600 mA − 25 60 mA

REG1

f

= 3 kHz; V

i

≤ 600 mA − 20 100 mV

REG1

=2V 60 70 − dB

i(p-p)

rejection
drop-out voltage I

REG1

= 550 mA;

− 0.4 0.7 V

VP= 9.5 V; note 7

current limit V

O(REG1)

> 8.5 V; note 8 0.65 1.2 − A

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

= 5 mA; unless otherwise specified)

REG2

output voltage 0.5 mA ≤ I

8V≤V

P

18 V ≤ V
I

≤ 150 mA

REG2

≤ 300 mA 4.75 5.0 5.25 V

REG2

≤18 V 4.75 5.0 5.25 V

≤ 50 V;

P

4.75 5.0 5.25 V

2001 Jun 07 12

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and

TDA3618JR

ignition buffers

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

∆V

line

∆V

load

SVRR supply voltage ripple

V

drop

I

lim

I

sc

Regulator 3 (I

V

O(off)

V

O(REG3)

∆V

line

∆V

load

I

q

SVRR supply voltage ripple

V

drop

I

lim

I

sc

Power switch

V

drop

I

dc

V

clamp

I

M

V

fb

I

sc

line regulation 6 V ≤ VP≤ 18 V − 250mV

6V≤V

load regulation 1 mA ≤ I

1mA≤I
f = 3 kHz; V

≤50 V − 15 75 mV

P

≤ 150 mA − 20 50 mV

REG2

≤ 300 mA −− 100 mV

REG2

=2V 60 70 − dB

i(p-p)

rejection
drop-out voltage I

REG2

= 100 mA;

− 0.4 0.6 V

VP= 4.75 V; note 7
I

REG2

= 200 mA;

− 0.8 1.2 V

VP= 5.75 V; note 7
I

REG2

= 100 mA;

− 0.2 0.5 V

VBU= 4.75 V; note 10
I

REG2

= 200 mA;

− 0.8 1.0 V

VBU= 5.75 V; note 10

current limit V

O(REG2)

> 4.5 V; note 8 0.32 0.37 − A

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

= 5 mA; unless otherwise specified)

REG3

output voltage off − 1 400 mV
output voltage 1 mA ≤ I

7V≤V

≤ 750 mA 4.75 5.0 5.25 V

REG3

≤18 V 4.75 5.0 5.25 V

P

line regulation 7 V ≤ VP≤ 18 V − 250mV
load regulation 1 mA ≤ I
quiescent current I

= 750 mA − 19 45 mA

REG3

f

= 3 kHz; V

i

≤ 750 mA − 20 100 mV

REG3

=2V 60 70 − dB

i(p-p)

rejection
drop-out voltage I

REG3

= 500 mA;

− 1 1.5 V

VP= 5.75 V; note 7

current limit V

O(REG3)

> 4.5 V; note 8 0.80 0.90 − A

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

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

− 0.45 0.70 V

note 11
I

= 1.8 A; VP= 13.5 V;

SW

− 1.0 1.8 V

note 11
continuous current VP=16V; VSW= 13.5 V 1.8 2.0 − A
clamping voltage VP≥ 17 V 13.5 15.0 16.0 V
peak current VP=17V;

3 −−A

notes 6, 12 and 13
flyback voltage

ISW= −100 mA − VP+ 3 22 V
behaviour

short-circuit current VP= 14.4 V;

− 0.8 − A

VSW< 1.2 V; note 13

2001 Jun 07 13

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and

TDA3618JR

ignition buffers

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Backup switch

I

dc

V

clamp

I

r

Schmitt trigger for enable input of ignition 1

V

th(r)

V

th(f)

V

hys

I

LI

I

I(clamp)

V

IH(clamp)

V

IL(clamp)

Schmitt trigger for power supply of ignition 1

V

th(r)

V

th(f)

Ignition 1 buffer

V

OL

V

OH

I

OL

I

LO

t

PLH

t

PHL

Schmitt trigger for enable input of ignition 2

V

th(r)

V

th(f)

V

hys

I

LI

I

I(clamp)

V

IH(clamp)

continuous current 0.3 0.35 − A
clamping voltage VP≥ 16.7 V −− 16 V
reverse current VP=0V; VBU= 12.4 V −− −900 µA

rising threshold voltage

2.75 3.25 3.75 V

of ignition 1 input
falling threshold voltage

0.8 − 1.3 V

of ignition 1 input
hysteresis voltage 1.5 −−V
input leakage current V
input clamping current V
HIGH-level input

=5V −− 1.0 µA

IGN1IN

>50V −− 50 mA

IGN1IN

V

− 50 V

P

clamping voltage
LOW-level input

−0.6 − 0V

clamping voltage

rising threshold voltage 6.5 7.0 7.5 V
falling threshold voltage note 14 4.0 4.5 5.0 V

LOW-level output

I

IGN1OUT

= 0 mA 0 0.2 0.8 V

voltage
HIGH-level output

I

IGN1OUT

= 0 mA 4.5 5.0 5.25 V

voltage
LOW-level output

V

IGN1OUT

≤ 0.8 V 0.45 0.8 − mA

current
output leakage current V

LOW-to-HIGH
propagation time

HIGH-to-LOW
propagation time

rising threshold voltage

IGN1OUT

V

IGN1IN

V

IGN1IN

3.75 to 0.8 V

V

IGN1IN

0.8 to 3.75 V

VP> 3.5 V 1.9 2.2 2.5 V

=5V;

=0V

falling from

rising from

−− 1.0 µA

−− 500 µs

−− 500 µs

of ignition 2 input
falling threshold voltage

VP> 3.5 V 1.7 2.0 2.3 V
of ignition 2 input

hysteresis voltage VP> 3.5 V 0.1 0.2 0.5 V
input leakage current V
input clamp current V
HIGH-level input

=5V −− 1.0 µA

IGN2IN

>50V −− 50 mA

IGN2IN

V

− 50 V

P

clamping voltage

2001 Jun 07 14

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and

TDA3618JR

ignition buffers

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

IL(clamp)

Ignition 2 buffer

V

OL

V

OH

I

OL

I

OH

I

LO

t

PLH

t

PHL

LOW-level input
clamping voltage

LOW-level output
voltage

HIGH-level output
voltage

LOW-level output
current

HIGH-level output
current

output leakage current
(source)

LOW-to-HIGH
propagation time

HIGH-to-LOW
propagation time

I

IGN2OUT

I

IGN2OUT

V

V

V

V

V

= 0 mA 0 0.2 0.8 V

= 0 mA 4.5 5.0 5.25 V

IGN2OUT

IGN2OUT

IGN2OUT
IGN2IN

IGN2IN

≤ 0.8 V 0.45 0.8 − mA

≥ 4.5 V −0.45 −2.0 − mA

=5V;

=5V

rising from

1.7 to 2.5 V

V

falling from

IGN2IN

2.5 to 1.7 V

−0.6 − 0V

−− 1.0 µA

−− 500 µs

−− 500 µs

Notes

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

2. The quiescent current is measured in the standby mode with pins EN1, EN2 and ENSW connected to ground 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 connected to pin C

t

dRES()

C

V

× C 750 103×()×==

------ -

th r()RES()

I

ch

[s]

6. The delay time depends on the value of the capacitor connected to pin C

C

V

t

dRES()

( 3.5)–× C 375( 103)××==

------ ­I

ch

OREG2)

[s]

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

8. At current limit, I

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

lim

lim

RES

RES

).

:

:

and REGn.

P

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

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

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

12. The maximum output current of the power 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 power 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

IGN1IN

> 1.2 V or V

> 1.3 V or V

EN1

> 1.3 V or V

EN3

ENSW

> 1.3 V.

2001 Jun 07 15

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

handbook, halfpage

9.0

V

O(REG1)

(V)

I

sc

I

REG1

a. Regulator 1. b. Regulator 2.

handbook, halfpage

V

O(REG3)

(V)

5.0

(A)

MBK946

I

handbook, halfpage

lim

V

O(REG2)

(V)

5.0

TDA3618JR

MGL598

I

sc

MGL599

I

REG2

(A)

I

lim

handbook, full pagewidth

I

sc

I

REG3

(A)

c. Regulator 3.

Fig.6 Foldback current protection of the regulators.

MGU349

V

SW

(V)

VP − 3.3

I

SW

not

delayed

(A)

2V

BE

generates

hold

delayed

>1.8 >31

I

lim

Fig.7 Current protection of the power switch.

2001 Jun 07 16

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

TEST AND APPLICATION INFORMATION
Test information

handbook, full pagewidth

V

ENSW

V

EN1

V

EN3

V

V

BU

P

C1

220 nF

C7
47 nF

C8

V

ENSW

EN1

EN3

C

RES

BU

P

1

11

10

4

TDA3618JR

13

16

TDA3618JR

SW

17

REG2

15

REG1

2

REG3

3

RES

9

HOLD

12

C2
220 nF

C3
10 µF

C4
10 µF

C5
10 µF

R2
10 kΩ

R3
10 kΩ

5 V

10 V

5 V

C6
1 µF

R

L(SW)

12 kΩ

R

L(REG2)

5 kΩ

R

L(REG1)

10 kΩ

R

L(REG3)

5 kΩ

V

V

IGN1

IGN2

R5

10 kΩ

R6

10 kΩ

C9
1 nF

C10
1 nF

IGN1

IGN2

IN

6

IN

5

14

ground

Fig.8 Test circuit.

2001 Jun 07 17

R4

IGN1

IGN2

OUT

OUT

MGR932

7

8

10 kΩ

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

Application information

NOISE

Table 1 Noise figures

REGULATOR

NOISE FIGURE (µV)

Co=10µFCo=47µFCo= 100 µF

1 170 130 110
2 180 120 100
3 100 70 65

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 (output
noise of the regulators is translated into a current noise by
means of the output capacitors). When a high frequency
capacitorof220 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.

TABILITY

S

(1)

TDA3618JR

The two examples 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 T
73 µFand the ESR is increased to 1.1 Ω. The regulator will
remain stable at T

Example 2

Regulator 2 is stabilized with a 10 µF electrolytic capacitor
(ESR = 3 Ω). At T
decreased to 3 µF and the ESR is increased to 23.1 Ω.
The regulator will be unstable at T
Fig.10).

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.

= −30 °C the capacitor value is decreased to

amb

= −30 °C (see Fig.9).

amb

= −30 °C the capacitor value is

amb

= −30 °C (see

amb

Theregulators are stabilized with the externally connected
output capacitors. The output capacitors can be selected
using the graphs of Figs 9 and 10. When an electrolytic
capacitor is used, the temperaturebehaviour of this output
capacitor can cause oscillations at a low temperature.

C (µF)

MGK612

100

handbook, halfpage

(Ω)

20

R

15

10

maximum ESR

5

0

0.1

stable region

1

10

handbook, halfpage

(Ω)

14

R

12
10

MGK613

maximum ESR

8
6
4
2
0

0.22

stable region

minimum ESR

110

C (µF)

100

Fig.9 Curve for selecting the value of output

capacitor for regulators 1 and 3.

2001 Jun 07 18

Fig.10 Curve for selecting the value of output

capacitor for regulator 2.

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

PACKAGE OUTLINE

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

non-concave

D

d

x

E

h

view B: mounting base side

A

D

h

2

TDA3618JR

SOT475-1

117

e

Z

DIMENSIONS (mm are the original dimensions)

UNIT A e

mm

A2bpcD

17.0

4.6

4.4

0.75

0.60

15.5

0.48

0.38

1

e

(1)

deD

24.0

20.0

23.6

19.6

w M

b

p

(1)

E

h

12.2

10 2.54

11.8

0 5 10 mm

B

j

L

3

scale

1.27

L

E

e

1

2

h

6

5.08

Q

LL3m

3.4

12.4

3.1

11.0

2.4

1.6

e

4.3

m

E

A

c

2

2.1

1.8

v M

(1)

v

Qj

0.8

0.4w0.03

Z

x

2.00

1.45

Note

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

OUTLINE
VERSION

SOT475-1

IEC JEDEC EIAJ

REFERENCES

2001 Jun 07 19

EUROPEAN

PROJECTION

ISSUE DATE

97-05-20
99-12-17

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

SOLDERING
Introduction to soldering through-hole mount

packages

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

Packages”

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.

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

DBS, DIP, HDIP, SDIP, SIL suitable suitable

“Data Handbook IC26; Integrated Circuit

(document order number 9398 652 90011).

PACKAGE

Thetotal contact time of successive solder waves must not
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
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.

SOLDERING METHOD

DIPPING WAVE

(1)

TDA3618JR

). If the

stg(max)

Note

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

2001 Jun 07 20

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and

TDA3618JR

ignition buffers

DATA SHEET STATUS

PRODUCT

DATA SHEET STATUS

Objective data Development This data sheet contains data from the objective specification for product

Preliminary data Qualification This data sheet contains data from the preliminary specification.

Product data Production This data sheet contains data from the product specification. Philips

Notes

1. Please consult the most recently issued data sheet before initiating or completing a design.

2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.

(1)

STATUS

(2)

development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.

Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.

Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.

DEFINITIONS

DEFINITIONS
Short-form specification  The data in a short-form

specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.

Limiting values definition  Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). 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
attheseoratanyotherconditionsabove 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  Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
norepresentation or warranty that such applications will be
suitable for the specified use without further testing or
modification.

DISCLAIMERS
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 resultin personal injury. Philips
Semiconductorscustomers using or selling these products
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.

Right to make changes  Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
theuse of any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products,andmakesno representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.

2001 Jun 07 21

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

NOTES

TDA3618JR

2001 Jun 07 22

Philips Semiconductors Preliminary specification

Multiple voltage regulator with switch and
ignition buffers

NOTES

TDA3618JR

2001 Jun 07 23

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© 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
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2001

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

72

Printed in The Netherlands 753503/03/pp24 Date of release: 2001 Jun 07 Document order number: 9397 750 08026