Document Outline
- FEATURES
- GENERAL DESCRIPTION
- ORDERING INFORMATION
- QUICK REFERENCE DATA
- BLOCK DIAGRAM
- PINNING
- FUNCTIONAL DESCRIPTION
- LIMITING VALUES
- THERMAL CHARACTERISTICS
- CHARACTERISTICS
- TEST AND APPLICATION INFORMATION
- PACKAGE OUTLINE
- SOLDERING
- DATA SHEET STATUS
- DEFINITIONS
- DISCLAIMERS
DATA SHEET
Product specification
File under Integrated Circuits, IC01
2001 May 02
INTEGRATED CIRCUITS
TDA3618AJR
Multiple voltage regulator with
switch and ignition buffers
2001 May 02
2
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
FEATURES
General
Extremely low noise behaviour and good stability with
very small output capacitors
Two V
P
-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
Low quiescent current when regulator 1, regulator 3 and
the power switch are switched off
Hold output for low V
P
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
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 V
P
.
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
A provision for the use of a 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
PACKAGE
NAME
DESCRIPTION
VERSION
TDA3618AJR
DBS17P
plastic DIL-bent-SIL (specially bent) power package;
17 leads (lead length 12 mm)
SOT475-1
2001 May 02
3
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
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
-
400
500
A
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; V
P
= 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
drop
drop-out voltage
I
SW
= 1 A
-
0.45
0.70
V
I
SW
= 1.8 A
-
1.0
1.8
V
I
M
peak current
3
-
-
A
2001 May 02
4
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
BLOCK DIAGRAM
handbook, full pagewidth
MGU332
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
TDA3618AJR
RES
Vreg2
REG2
REG3
REG1
SW
VP
ENSW
EN3
EN1
CRES
BU
HOLD
12
2
IGNITION BUFFER
5
IGN2OUT
IGN2IN
7
INVERTER
6
IGN1IN
8
3
15
Vth(r) = 7 V, Vth(f) = 4.5 V
IGN1OUT
Fig.1 Block diagram.
2001 May 02
5
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
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 (push-pull)
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
handbook, halfpage
TDA3618AJR
MGU333
VP
REG1
REG3
EN3
IGN2IN
IGN1IN
IGN1OUT
IGN2OUT
RES
EN1
ENSW
HOLD
CRES
GND
REG2
BU
SW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Fig.2 Pin configuration.
2001 May 02
6
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
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
the microcontroller. The reset cycle can be extended by an
external capacitor at pin C
RES
. This start-up feature is
included 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 the supply drops to 0 V
(the time depends on the value of the storage capacitor).
The output stages of regulators 1 and 3 have an extremely
low noise behaviour and good stability. These regulators
are stabilized by using small output capacitors.
When both regulator 2 and the supply voltage (V
P
> 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 V
P
),
temperature protection and load dump protection.
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 HOLD also 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
protected against 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 (V
P
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
V
P
-
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 (V
SW
< V
P
-
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
RES
. During this time, the switch can
deliver more than 3 A. The charge current of the reset
delay capacitor is typically 4
A 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.
2001 May 02
7
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
handbook, full pagewidth
&
1
1
REGULATOR 1
low battery
detector
Vref1
Vref2
enable
output stage
output stage
enable
out of
regulation
detector
out of
regulation
detector
REGULATOR 3
TDA3618AJR
TEMPERATURE
PROTECTION
>
150
C
LOAD
DUMP
buffer
MGU334
V16
FOLDBACK
MODE
1
10
EN1
REG1
REG3
HOLD
VP
EN3
4
12
3
2
Fig.3 Block diagram of the hold circuit.
2001 May 02
8
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
handbook, full pagewidth
load dump
load dump
VP
ignition 1
input
ignition 1
output
VP
ignition 2
input
ignition 2
output
7.0 V
4.5 V
3.25 V
-
100 V
5.0 V
0.2 V
0.2 V
50 V
1.1 V
2.2 V
-
100 V
5.0 V
50 V
2.0 V
Schmitt trigger ignition 1
Schmitt trigger ignition 2
Hold output
VP
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.
2001 May 02
9
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
handbook, full pagewidth
VP
VBU
regulator 2
reset
delay
capacitor
reset
VP
enable
regulator 1
regulator 1
regulator 3
enable
regulator 3
VP
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
>
1.8 V
9 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
5.0 V
<1.3 V
>
1.8 V
<1.3 V
>
1.8 V
<1.3 V
load dump
load dump
MGK610
Power switch behaviour
VP and enable Schmitt trigger
Backup Schmitt trigger and reset behaviour
Fig.5 Timing diagram of regulators and power switch.
2001 May 02
10
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
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
2001 May 02
11
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
CHARACTERISTICS
V
P
= 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
V
P
= 12.4 V; note 2
-
390
500
A
V
P
= 14.4 V; note 2
-
400
-
A
Schmitt trigger for regulator 1, regulator 3 and the power switch
V
th(r)
rising threshold voltage
6.5
7.0
7.5
V
V
th(f)
falling threshold voltage
4.0
4.5
5.0
V
V
hys
hysteresis voltage
-
2.5
-
V
Schmitt trigger for regulator 2
V
th(r)
rising threshold voltage
6.0
6.5
7.1
V
V
th(f)
falling threshold voltage
1.7
1.9
2.3
V
V
hys
hysteresis voltage
-
4.6
-
V
Schmitt trigger for enable inputs (regulator 1, regulator 3 and the power switch)
V
th(r)
rising threshold voltage
1.4
1.8
2.4
V
V
th(f)
falling threshold voltage
0.9
1.3
1.9
V
V
hys
hysteresis voltage
I
REG
= I
SW
= 1 mA
-
0.5
-
V
I
LI
input leakage current
V
EN
= 5 V
1
5
10
A
Reset trigger level of regulator 2
V
th(r)
rising threshold voltage
V
P
rising; I
REG1
= 50 mA;
note 3
4.43
V
O(REG2)
-
0.15 V
O(REG2)
-
0.1
V
V
th(f)
falling threshold voltage
V
P
falling; I
REG1
= 50 mA;
note 3
4.4
V
O(REG2)
-
0.20 V
O(REG2)
-
0.15
V
Schmitt triggers for HOLD output
V
th(r)(REG1)
rising threshold voltage of
regulator 1
V
P
rising; note 3
-
V
O(REG1)
-
0.15 V
O(REG1)
-
0.075 V
V
th(f)(REG1)
falling threshold voltage of
regulator 1
V
P
falling; note 3
8.1
V
O(REG1)
-
0.35
-
V
V
hys(REG1)
hysteresis voltage due to
regulator 1
-
0.2
-
V
V
th(r)(REG3)
rising threshold voltage of
regulator 3
V
P
rising; note 3
-
V
O(REG3)
-
0.15 V
O(REG3)
-
0.075 V
V
th(f)(REG3)
falling threshold voltage of
regulator 3
V
P
falling; note 3
4.1
V
O(REG3)
-
0.35
-
V
V
hys(REG3)
hysteresis voltage due to
regulator 3
-
0.2
-
V
2001 May 02
12
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
V
th(r)(VP)
rising threshold voltage of
supply voltage
V
EN
= 0 V
9.1
9.7
10.3
V
V
th(f)(VP)
falling threshold voltage of
supply voltage
V
EN
= 0 V
9.0
9.4
9.8
V
V
hys(VP)
hysteresis voltage of
supply voltage
V
EN
= 0 V
-
0.3
-
V
Reset and hold buffer
I
sink(L)
LOW-level sink current
V
RES
0.8 V;
V
HOLD
0.8 V;
V
CRES
< 1.0V
2
-
-
mA
I
LO
HOLD output leakage
current
V
P
= 14.4 V; V
HOLD
= 5 V
-
0.1
5
A
I
source(H)
HIGH-level source current
V
P
= 14.4V; V
RES
= 4.5V;
V
CRES
> 3.5V
240
400
900
A
t
r
rise time
note 4
-
7
50
s
t
f
fall time
note 4
-
1
50
s
Reset delay
I
ch
charge current
2
4
8
A
I
dch
discharge current
500
800
-
A
V
th(r)(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
th(r)(SW)
rising voltage threshold
switch foldback protection
-
V
O(REG2)
-
V
t
d(SW)
delay time 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
line regulation
12 V
V
P
18 V
-
2
75
mV
V
load
load regulation
1 mA
I
REG1
600 mA
-
20
100
mV
I
q
quiescent current
I
REG1
= 600 mA
-
25
60
mA
SVRR
supply voltage ripple
rejection
f
i
= 3 kHz; V
i(p-p)
= 2 V
60
70
-
dB
V
drop
drop-out voltage
I
REG1
= 550 mA;
V
P
= 9.5 V; note 7
-
0.4
0.7
V
I
lim
current limit
V
O(REG1)
> 8.5 V; note 8
0.65
1.2
-
A
I
sc
short-circuit current
R
L
0.5
; note 9
250
800
-
mA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2001 May 02
13
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
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
8 V
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
line regulation
6 V
V
P
18 V
-
2
50
mV
6 V
V
P
50 V
-
15
75
mV
V
load
load regulation
1 mA
I
REG2
150 mA
-
20
50
mV
1 mA
I
REG2
300 mA
-
-
100
mV
SVRR
supply voltage ripple
rejection
f
i
= 3 kHz; V
i(p-p)
= 2 V
60
70
-
dB
V
drop
drop-out voltage
I
REG2
= 100 mA;
V
P
= 4.75 V; note 7
-
0.4
0.6
V
I
REG2
= 200 mA;
V
P
= 5.75 V; note 7
-
0.8
1.2
V
I
REG2
= 100 mA;
V
BU
= 4.75 V; note 10
-
0.2
0.5
V
I
REG2
= 200 mA;
V
BU
= 5.75 V; note 10
-
0.8
1.0
V
I
lim
current limit
V
O(REG2)
> 4.5 V; note 8
0.32
0.37
-
A
I
sc
short-circuit current
R
L
0.5
; 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
7 V
V
P
18 V
4.75
5.0
5.25
V
V
line
line regulation
7 V
V
P
18 V
-
2
50
mV
V
load
load regulation
1 mA
I
REG3
750 mA
-
20
100
mV
I
q
quiescent current
I
REG3
= 750 mA
-
19
45
mA
SVRR
supply voltage ripple
rejection
f
i
= 3 kHz; V
i(p-p)
= 2 V
60
70
-
dB
V
drop
drop-out voltage
I
REG3
= 500 mA;
V
P
= 5.75 V; note 7
-
1
1.5
V
I
lim
current limit
V
O(REG3)
> 4.5 V; note 8
0.80
0.90
-
A
I
sc
short-circuit current
R
L
0.5
; note 9
100
400
-
mA
Power switch
V
drop
drop-out voltage
I
SW
= 1 A; V
P
= 13.5 V;
note 11
-
0.45
0.70
V
I
SW
= 1.8 A; V
P
= 13.5 V;
note 11
-
1.0
1.8
V
I
dc
continuous current
V
P
= 16 V; V
SW
= 13.5 V
1.8
2.0
-
A
V
clamp
clamping voltage
V
P
17 V
13.5
15.0
16.0
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2001 May 02
14
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
I
M
peak current
V
P
= 17 V;
notes 6, 12, 13
3
-
-
A
V
fb
flyback voltage behaviour
I
SW
=
-
100 mA
-
V
P
+ 3
22
V
I
sc
short-circuit current
V
P
= 14.4 V;
V
SW
< 1.2 V; note 13
-
0.8
-
A
Backup switch
I
dc
continuous current
0.3
0.35
-
A
V
clamp
clamping voltage
V
P
16.7 V
-
-
16
V
I
r
reverse current
V
P
= 0 V; V
BU
= 12.4 V
-
-
-
900
A
Schmitt trigger for enable input of ignition 1
V
th(r)
rising threshold voltage of
ignition 1 input
2.75
3.25
3.75
V
V
th(f)
falling threshold voltage of
ignition 1 input
0.8
-
1.3
V
V
hys
hysteresis voltage
1.5
-
-
V
I
LI
input leakage current
V
IGN1IN
= 5 V
-
-
1.0
A
I
I(clamp)
input clamping current
V
IGN1IN
> 50 V
-
-
50
mA
V
IH(clamp)
HIGH-level input clamping
voltage
V
P
-
50
V
V
IL(clamp)
LOW-level input clamping
voltage
-
0.6
-
0
V
Schmitt trigger for power supply of ignition 1
V
th(r)
rising threshold voltage
6.5
7.0
7.5
V
V
th(f)
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
V
OH
HIGH-level output voltage
I
IGN1OUT
= 0 mA
4.5
5.0
5.25
V
I
OL
LOW-level output current
V
IGN1OUT
0.8 V
0.45
0.8
-
mA
I
LO
output leakage current
V
IGN1OUT
= 5 V;
V
IGN1IN
= 0 V
-
-
1.0
A
t
PLH
LOW-to-HIGH propagation
time
V
IGN1IN
falling from
3.75 to 0.8 V
-
-
500
s
t
PHL
HIGH-to-LOW
propagation time
V
IGN1IN
rising from
0.8 to 3.75 V
-
-
500
s
Schmitt trigger for enable input of ignition 2
V
th(r)
rising threshold voltage of
ignition 2 input
V
P
> 3.5 V
1.9
2.2
2.5
V
V
th(f)
falling threshold voltage of
ignition 2 input
V
P
> 3.5 V
1.7
2.0
2.3
V
V
hys
hysteresis voltage
V
P
> 3.5 V
0.1
0.2
0.5
V
I
LI
input leakage current
V
IGN2IN
= 5 V
-
-
1.0
A
I
I(clamp)
input clamp current
V
IGN2IN
> 50 V
-
-
50
mA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2001 May 02
15
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
Notes
1. Minimum operating voltage, only if V
P
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 V
P
drop.
4. The rise and fall times are measured with a 10 k
pull-up resistor and a 50 pF load capacitor.
5. The delay time depends on the value of the capacitor connected to pin C
RES
:
[s]
6. The delay time depends on the value of the capacitor connected to pin C
RES
:
[s]
7. The drop-out voltage of regulators 1, 2 and 3 is measured between pins V
P
and REGn.
8. At current limit, I
lim
is held constant (see Fig.6 for the behaviour of I
lim
).
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 V
P
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 V
P
+ 1 V is applied to the switch-enable input.
13. At short-circuit, I
sc
of 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 V
P
+ 1 V is applied
to the switch-enable input.
14. V
IGN1OUT
= LOW for V
IGN1IN
> 1.2 V or V
EN1
> 1.3 V or V
EN3
> 1.3 V or V
ENSW
> 1.3 V.
V
IH(clamp)
HIGH-level input clamping
voltage
V
P
-
50
V
V
IL(clamp)
LOW-level input clamping
voltage
-
0.6
-
0
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
= 5 V;
V
IGN2IN
= 5 V
-
-
1.0
A
t
PLH
LOW-to-HIGH propagation
time
V
IGN2IN
rising from
1.7 to 2.5 V
-
-
500
s
t
PHL
HIGH-to-LOW
propagation time
V
IGN2IN
falling from
2.5 to 1.7 V
-
-
500
s
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
t
d(RES)
C
I
ch
-------
V
th(r)(RES)
C
750
10
3
(
)
=
=
t
d(RES)
C
I
ch
-------
V
O(REG2)
3.5
(
)
C
375
10
3
(
)
=
=
2001 May 02
16
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
handbook, halfpage
MGL599
5.0
Isc
IREG3 (A)
Ilim
VO(REG3)
(V)
handbook, halfpage
MBK946
9.0
Isc
IREG1 (A)
Ilim
VO(REG1)
(V)
handbook, halfpage
MGL598
5.0
Isc
IREG2 (A)
Ilim
VO(REG2)
(V)
Fig.6 Foldback current protection of the regulators.
a. Regulator 1.
b. Regulator 2.
c. Regulator 3.
handbook, full pagewidth
>
1.8
>
3
1
generates
hold
MGU349
VP
-
3.3
2VBE
ISW (A)
VSW
(V)
not
delayed
delayed
Fig.7 Current protection of the power switch.
2001 May 02
17
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
TEST AND APPLICATION INFORMATION
Test information
handbook, full pagewidth
MGU335
C3
10
F
C2
220 nF
C1
220 nF
C4
10
F
RL(REG2)
5 k
RL(SW)
12 k
5 V
5 V
10 V
C5
10
F
C6
1
F
C7
47 nF
RL(REG1)
10 k
RL(REG3)
5 k
17
15
2
7
8
12
9
3
4
13
16
11
1
14
TDA3618AJR
ground
VP
VENSW
VEN3
10
VEN1
10 k
R6
C10
1 nF
5
6
VIGN2
10 k
R5
C9
1 nF
VIGN1
C8
VBU
R3
10 k
R4
10 k
VP
REG1
REG3
EN3
IGN2IN
IGN1IN
IGN1OUT
IGN2OUT
RES
EN1
ENSW
HOLD
CRES
REG2
BU
SW
Fig.8 Test circuit.
2001 May 02
18
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
Application information
N
OISE
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
capacitor of 220 nF in parallel with an electrolytic capacitor
of 100
F is connected directly to pins 1 and 14 (supply
and ground), the noise is minimal.
S
TABILITY
The regulators are stabilized with the externally connected
output capacitors.
The output 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
cause oscillations at a 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
F (ESR = 0.15
). At
T
amb
=
-
30
C, the capacitor value is decreased to 73
F
and the ESR is increased to 1.1
. The regulator remains
stable at T
amb
=
-
30
C.
Example 2
Regulator 2 is stabilized with a 10
F electrolytic capacitor
(ESR = 3
). At T
amb
=
-
30
C, the capacitor value is
decreased to 3
F and the ESR is increased to 23.1
.
Using Fig.10, the regulator will be unstable at
T
amb
=
-
30
C.
Solution
To avoid problems with stability at low temperatures, the
use of tantalum capacitors is recommended. Use a
tantalum capacitor of 10
F or a larger electrolytic
capacitor.
REGULATOR
NOISE FIGURE (
V)
(1)
C
o
= 10
F
C
o
= 47
F
C
o
= 100
F
1
170
130
110
2
180
120
100
3
100
70
65
handbook, halfpage
0
0.1
1
10
C (
F)
MGK612
stable region
maximum ESR
100
R
(
)
20
15
10
5
Fig.9
Curve for selecting the value of output
capacitor for regulators 1 and 3.
handbook, halfpage
2
0
0.22
1
10
C (
F)
MGK613
4
6
8
10
12
stable region
maximum ESR
minimum ESR
100
R
(
)
14
Fig.10 Curve for selecting the value of output
capacitor for regulator 2.
2001 May 02
19
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
PACKAGE OUTLINE
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
97-05-20
99-12-17
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
1
17
j
Eh
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
A
2
b
p
c
D
(1)
E
(1)
Z
(1)
d
e
D
h
L
L
3
m
mm
17.0
15.5
4.6
4.4
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
Q
j
0.4
w
0.03
x
2001 May 02
20
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
SOLDERING
Introduction to soldering through-hole mount
packages
This text gives a brief insight to wave, dip and manual
soldering. A more in-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.
The total 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
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.
PACKAGE
SOLDERING METHOD
DIPPING
WAVE
DBS, DIP, HDIP, SDIP, SIL
suitable
suitable
(1)
2001 May 02
21
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
DATA SHEET STATUS
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.
DATA SHEET STATUS
(1)
PRODUCT
STATUS
(2)
DEFINITIONS
Objective data
Development
This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Preliminary data
Qualification
This data sheet contains data from the preliminary specification.
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.
Product data
Production
This data sheet contains data from the product specification. Philips
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
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
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
Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
no representation 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 result in personal injury. Philips
Semiconductors customers 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
the use of any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
2001 May 02
22
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
NOTES
2001 May 02
23
Philips Semiconductors
Product specification
Multiple voltage regulator with
switch and ignition buffers
TDA3618AJR
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
2001
72
Philips Semiconductors a worldwide company
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Date of release:
2001 May 02
Document order number:
9397 750 08068
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