Datasheet TDA3618AJR Datasheet (Philips)

INTEGRATED CIRCUITS

DATA SH EET

TDA3618AJR

Multiple voltage regulator with
switch and ignition buffers

Product specification
File under Integrated Circuits, IC01

2001 May 02

Philips Semiconductors Product 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

the 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 (push-pull) 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

(supply line may be short-circuited)

• ESD protected on all pins

• Thermal protections with hysteresis

• Load dump protection

P

TDA3618AJR

• 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-circuit safe to ground and VP.

GENERAL DESCRIPTION

The TDA3618AJR is a multiple output voltage 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 foldback current
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

• A power switch with protection, 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
wake up the microcontroller

• A supply pin that 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 use ofa reserve supply capacitor that
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

TDA3618AJR DBS17P plastic DIL-bent-SIL (specially bent) power package;

2001 May 02 2

NAME DESCRIPTION VERSION

17 leads (lead length 12 mm)

PACKAGE

SOT475-1

Philips Semiconductors Product specification

Multiple voltage regulator with

TDA3618AJR

switch and ignition buffers

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

P

I

q(tot)

T

j

Voltage regulators

V

O(REG1)

V

O(REG2)

V

O(REG3)

Power switch

V

drop

I

M

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

≥ 2.5 ms

r

−−50 V

total quiescent supply current standby mode − 400 500 µA
junction temperature −−150 °C

output voltage of regulator 1 1 mA ≤ I
output voltage of regulator 2 0.5 mA ≤ I
output voltage of regulator 3 1 mA ≤ I

≤ 600 mA 8.5 9.0 9.5 V

REG1

≤ 150 mA; VP= 14.4 V 4.75 5.0 5.25 V

REG2

≤ 750 mA 4.75 5.0 5.25 V

REG3

drop-out voltage ISW=1A − 0.45 0.70 V

I

= 1.8 A − 1.0 1.8 V

SW

peak current 3 −−A

2001 May 02 3

Philips Semiconductors Product specification

Multiple voltage regulator with
switch and ignition buffers

BLOCK DIAGRAM

handbook, full pagewidth

V

= 7 V, V

th(r)

1

V

P

ENSW

11

th(f)

= 4.5 V

POWER SWITCH

&

BACK-UP SWITCH

BACK-UP CONTROL

TEMPERATURE

LOAD DUMP

PROTECTION

REGULATOR 2

TDA3618AJR

17

SW

16

BU

15

REG2

C

RES

IGN2

IGN1

EN3

EN1

IN

IN

3

4

&

REGULATOR 3

REG3

TDA3618AJR

12

MGU332

2

REG1

HOLD

9

RES

8

IGN2
IGN1

OUT
OUT

7

10

≥1

13

&

5

6

IGNITION BUFFER

INVERTER

14

GND

REGULATOR 1

&

V

reg2

Fig.1 Block diagram.

2001 May 02 4

Philips Semiconductors Product 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 (push-pull)
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
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

1

P

2
3
4
5

IN

6

IN

7
8

9
10
11
12
13
14
15
16
17

TDA3618AJR

TDA3618AJR

MGU333

Fig.2 Pin configuration.

2001 May 02 5

Philips Semiconductors Product specification

Multiple voltage regulator with
switch and ignition buffers

FUNCTIONAL DESCRIPTION

The TDA3618AJR is a multiple output voltage 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 TDA3618AJR.

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
included to secure a smoothstart-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 3haveanextremely
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 the enable inputs (pins EN1 and EN3
respectively).

Pin HOLD is normally HIGH and is active LOW. Pin HOLD
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-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
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.

. This start-up feature is

RES

TDA3618AJR

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 and 2 A continuous (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 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.

. During this time, the switch can

RES

2001 May 02 6

Philips Semiconductors Product specification

Multiple voltage regulator with
switch and ignition buffers

handbook, full pagewidth

V

P

1

V

V

ref2

low battery

detector

ref1

output stage

TDA3618AJR

TDA3618AJR

2

REG1

EN1

EN3

&

out of

regulation

10

4

enable

enable

detector

REGULATOR 1

output stage

out of

regulation

detector

REGULATOR 3

≥ 1

TEMPERATURE

PROTECTION

>150 °C

LOAD
DUMP

V16

FOLDBACK

MODE

≥ 1

buffer

MGU334

3

REG3

12

HOLD

Fig.3 Block diagram of the hold circuit.

2001 May 02 7

Philips Semiconductors Product specification

Multiple voltage regulator with
switch and ignition buffers

handbook, full pagewidth

V

7.0 V

P

4.5 V

input

V

≤50 V

≥3.25 V

≤1.1 V

≥−100 V

5.0 V

0.2 V

P

ignition 1

ignition 1

output

TDA3618AJR

load dump

Schmitt trigger ignition 1

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.

2001 May 02 8

MGR930

Philips Semiconductors Product specification

Multiple voltage regulator with
switch and ignition buffers

handbook, full pagewidth

V

P

V

BU

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

P

7.0 V

4.0 V

>1.8 V
<1.3 V

V

regulator 2

reset

delay

capacitor

reset

enable

regulator 1

TDA3618AJR

load dump

Backup Schmitt trigger and reset behaviour

load dump

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 May 02 9

Philips Semiconductors Product specification

Multiple voltage regulator with

TDA3618AJR

switch and 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 May 02 10

Philips Semiconductors Product specification

Multiple voltage regulator with

TDA3618AJR

switch and ignition buffers

CHARACTERISTICS

VP= 14.4 V; T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supplies

V

P

I

q

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 the power switch)

V

th(r)

V

th(f)

V

hys

I

LI

Reset trigger level of regulator 2

V

th(r)

V

th(f)

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 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

≥ 2.5 ms

r

−− 50 V

quiescent supply current VP= 12.4 V; note 2 − 390 500 µA

V

= 14.4 V; note 2 − 400 −µA

P

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;

4.43 V

O(REG2)

− 0.15 V

O(REG2)

− 0.1 V

note 3

falling threshold voltage VPfalling;I

REG1

= 50 mA;

4.4 V

O(REG2)

− 0.20 V

O(REG2)

− 0.15 V

note 3

rising threshold voltage of

VPrising; note 3 − V

O(REG1)

− 0.15 V

O(REG1)

− 0.075 V

regulator 1
falling threshold voltage of

VPfalling; note 3 8.1 V

O(REG1)

− 0.35 − V

regulator 1
hysteresis voltage due to

− 0.2 − V

regulator 1
rising threshold voltage of

VPrising; note 3 − V

O(REG3)

− 0.15 V

O(REG3)

− 0.075 V

regulator 3
falling threshold voltage of

VPfalling; note 3 4.1 V

O(REG3)

− 0.35 − V

regulator 3
hysteresis voltage due to

− 0.2 − V

regulator 3

2001 May 02 11

Philips Semiconductors Product specification

Multiple voltage regulator with

TDA3618AJR

switch and 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

I

source(H)

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

rising threshold voltage of

VEN= 0 V 9.1 9.7 10.3 V

supply voltage
falling threshold voltage of

VEN= 0 V 9.0 9.4 9.8 V

supply voltage
hysteresis voltage of

VEN=0V − 0.3 − V

supply voltage

LOW-level sink current V

HOLD output leakage

≤ 0.8 V;

RES

V

≤ 0.8 V;

HOLD

V

< 1.0V

CRES

VP= 14.4 V; V

2 −− mA

=5V − 0.1 5 µA

HOLD

current
HIGH-level source current VP= 14.4V;V

V

> 3.5V

CRES

RES

= 4.5V;

240 400 900 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 foldback

C = 47 nF; note 6 8 17.6 40 ms

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

2001 May 02 12

Philips Semiconductors Product specification

Multiple voltage regulator with

TDA3618AJR

switch and ignition buffers

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Regulator 2 (I

V

O(REG2)

∆V

line

∆V

load

output voltage 0.5 mA ≤ I

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

load regulation 1 mA ≤ I

SVRR supply voltage ripple

rejection

V

I
I

drop

lim
sc

drop-out voltage I

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

Regulator 3 (I

V

O(off)

V

O(REG3)

∆V

line

∆V

load

I

q

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

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

SVRR supply voltage ripple

rejection

V

I
I

drop

lim
sc

drop-out voltage I

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

Power switch

V

I

dc

V

drop

clamp

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

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

= 5 mA unless otherwise specified)

REG2

8V≤V
18 V ≤ V

I

REG2

6V≤V

1mA≤I

= 3 kHz; V

f

i

REG2

VP= 4.75 V; note 7
I

REG2

VP= 5.75 V; note 7
I

REG2

VBU= 4.75 V; note 10
I

REG2

VBU= 5.75 V; note 10

O(REG2)

= 5 mA unless otherwise specified)

REG3

7V≤V

REG3

f

= 3 kHz; V

i

REG3

VP= 5.75 V; note 7

O(REG3)

note 11
I

= 1.8 A; VP= 13.5 V;

SW

note 11

≤ 300 mA 4.75 5.0 5.25 V

REG2

≤18 V 4.75 5.0 5.25 V

P

≤ 50 V;

P

4.75 5.0 5.25 V

≤ 150 mA

≤50 V − 15 75 mV

P

≤ 150 mA − 20 50 mV

REG2

≤ 300 mA −− 100 mV

REG2

=2V 60 70 − dB

i(p-p)

= 100 mA;

= 200 mA;

= 100 mA;

= 200 mA;

− 0.4 0.6 V

− 0.8 1.2 V

− 0.2 0.5 V

− 0.8 1.0 V

> 4.5 V; note 8 0.32 0.37 − A

≤ 750 mA 4.75 5.0 5.25 V

REG3

≤18 V 4.75 5.0 5.25 V

P

≤ 750 mA − 20 100 mV

REG3

= 750 mA − 19 45 mA

=2V 60 70 − dB

i(p-p)

= 500 mA;

− 1 1.5 V

> 4.5 V; note 8 0.80 0.90 − A

− 0.45 0.70 V

− 1.0 1.8 V

2001 May 02 13

Philips Semiconductors Product specification

Multiple voltage regulator with

TDA3618AJR

switch and ignition buffers

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

I

M

V

fb

I

sc

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)

peak current VP=17V;

3 −− A

notes 6, 12, 13
flyback voltage behaviour ISW= −100 mA − VP+ 3 22 V
short-circuit current VP= 14.4 V;

− 0.8 − A

VSW< 1.2 V; note 13

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 of

2.75 3.25 3.75 V

ignition 1 input
falling threshold voltage of

0.8 − 1.3 V

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

=5V −− 1.0 µA

IGN1IN

>50V −− 50 mA

IGN1IN

V

− 50 V

P

voltage
LOW-level input clamping

−0.6 − 0V

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 voltage I
HIGH-level output voltage I
LOW-level output current V
output leakage current V

LOW-to-HIGHpropagation
time

HIGH-to-LOW
propagation time

rising threshold voltage of

IGN1OUT
IGN1OUT

IGN1OUT
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

= 0 mA 0 0.2 0.8 V
= 0 mA 4.5 5.0 5.25 V

≤ 0.8 V 0.45 0.8 − mA
=5V;

−− 1.0 µA

=0V

falling from

rising from

−− 500 µs

−− 500 µs

ignition 2 input
falling threshold voltage of

VP> 3.5 V 1.7 2.0 2.3 V
ignition 2 input

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

=5V −− 1.0 µA

IGN2IN

>50V −− 50 mA

IGN2IN

2001 May 02 14

Philips Semiconductors Product specification

Multiple voltage regulator with

TDA3618AJR

switch and ignition buffers

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

IH(clamp)

V

IL(clamp)

Ignition 2 buffer

V

OL

V

OH

I

OL

I

OH

I

LO

t

PLH

t

PHL

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)

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

d(RES)

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

t

d(RES)

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

8. At current limit, I

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 VP and 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

HIGH-levelinput clamping
voltage

LOW-level input clamping
voltage

LOW-level output voltage I
HIGH-level output voltage I
LOW-level output current V
HIGH-level output current V
output leakage current

(source)
LOW-to-HIGHpropagation

time
HIGH-to-LOW

propagation time

= ∞ (see Fig.8).

C

V

× C 750 103×()×==

------ -

th(r)(RES)

I

ch

C

V

------ ­I

ch

O(REG2)

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

lim

= LOW for V

3.5–()× C 375 103×()×==

> 1.2 V or V

IGN1IN

IGN2OUT
IGN2OUT

IGN2OUT
IGN2OUT

V

IGN2OUT

V

IGN2IN

V

IGN2IN

= 0 mA 0 0.2 0.8 V
= 0 mA 4.5 5.0 5.25 V

=5V

rising from

1.7 to 2.5 V
V

IGN2IN

falling from

2.5 to 1.7 V

[s]

> 1.3 V or V

EN1

V

− 50 V

P

−0.6 − 0V

≤ 0.8 V 0.45 0.8 − mA
≥ 4.5 V −0.45 −2.0 − mA

=5V;

−− 1.0 µA

−− 500 µs

−− 500 µs

:

RES

:

RES

[s]

and REGn.

P

).

lim

> 1.3 V or V

EN3

ENSW

> 1.3 V.

2001 May 02 15

Philips Semiconductors Product specification

Multiple voltage regulator with
switch and ignition buffers

handbook, halfpage

9.0

V

O(REG1)

(V)

handbook, halfpage

V

O(REG2)

(V)

5.0

I

a. Regulator 1.

MGL598

sc

handbook, halfpage

V

O(REG3)

(V)

5.0

I

REG1

(A)

MBK946

I

TDA3618AJR

lim

MGL599

handbook, full pagewidth

I

sc

I

REG2

(A)

I

lim

I

sc

I

REG3

(A)

I

lim

b. Regulator 2. 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

Fig.7 Current protection of the power switch.

2001 May 02 16

Philips Semiconductors Product specification

Multiple voltage regulator with
switch and ignition buffers

TEST AND APPLICATION INFORMATION
Test information

handbook, full pagewidth

C1

220 nF

C8

C7
47 nF

ENSW

C

RES

V

ENSW

V

V

EN1

EN3

V

V

BU

P

V

EN1

EN3

BU

P

1

11

10

4

13

16

TDA3618AJR

TDA3618AJR

SW

17

REG2

15

REG1

2

REG3

3

RES

9

HOLD

12

C2
220 nF

C3
10 µF

C4
10 µF

C5
10 µF

R3
10 kΩ

10 V

5 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 May 02 17

R4

IGN1

OUT

7

IGN2

OUT

8

MGU335

10 kΩ

Philips Semiconductors Product 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 (the
output noise of the regulators is translated to a current
noise by 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
Theregulators are stabilized with the externally connected

output capacitors.

(1)

TDA3618AJR

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
causeoscillationsata low temperature. The two 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
T

= −30 °C, the capacitor value is decreased to 73 µF

amb

and the ESR is increased to 1.1 Ω. The regulator remains
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.
Using Fig.10, the regulator will be unstable at
T

= −30 °C.

amb

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.

amb

= −30 °C.

= −30 °C, the capacitor value is

amb

C (µF)

MGK612

100

handbook, halfpage

(Ω)

20

R

15

10

maximum ESR

5

0

0.1

stable region

1

10

Fig.9 Curve for selecting the value of output

capacitor for regulators 1 and 3.

2001 May 02 18

handbook, halfpage

(Ω)

14

R

12
10

maximum ESR

8
6
4
2
0

0.22

stable region

minimum ESR

110

MGK613

C (µF)

Fig.10 Curve for selecting the value of output

capacitor for regulator 2.

100

Philips Semiconductors Product 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

TDA3618AJR

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

1.27

scale

1

e

5.08

L

E

2

h

6

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 May 02 19

EUROPEAN

PROJECTION

ISSUE DATE

97-05-20
99-12-17

Philips Semiconductors Product 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

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
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)

TDA3618AJR

). 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 May 02 20

Philips Semiconductors Product specification

Multiple voltage regulator with

TDA3618AJR

switch and 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
norepresentationorwarrantythatsuchapplicationswill 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
Semiconductorscustomersusingorsellingtheseproducts
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
theuseofanyoftheseproducts,conveysnolicenceortitle
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 May 02 21

Philips Semiconductors Product specification

Multiple voltage regulator with
switch and ignition buffers

TDA3618AJR

NOTES

2001 May 02 22

Philips Semiconductors Product specification

Multiple voltage regulator with
switch and ignition buffers

TDA3618AJR

NOTES

2001 May 02 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 403502/01/pp24 Date of release: 2001 May 02 Document order number: 9397 750 08068