Philips tda3606a DATASHEETS
INTEGRATED CIRCUITS
DATA SH EET
TDA3606A
Multiple voltage regulator with
battery detection
Product specification
Supersedes data of 1997 Aug 12
File under Integrated Circuits, IC01
1998 May 07
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection
FEATURES
• One VP-state controlled regulator
• Regulator and reset outputs operate during load dump
• Supply voltage range of −18 to +50 V
• Low quiescent current (battery detection switched off)
• High ripple rejection
• Dual reset output.
PROTECTIONS
• Reverse polarity safe (down to −18 V without high
reverse current)
• Able to withstand voltages up to 18 V at the output
(supply line may be short-circuited)
• ESD protected on all pins
• Load dump protection
• Foldback current limit protection for regulator
• DC short-circuit safe to ground and V
output.
of regulator
P
TDA3606A
GENERAL DESCRIPTION
The TDA3606A is a low power voltage regulator.
It contains:
1. One fixed voltage regulator with a foldback current
protection, intended to supply a microprocessor, that
also operates during load dump
2. A reset-signal can be used to interface with the
microprocessor
3. Supply pin can withstand load dump pulses and
negative supply voltages
4. Defined start-up behaviour; regulator will be switched
on at a supply voltage higher than 7.6 V and off when
the output voltage of the regulator drops below 2.4 V.
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supplies
V
P
supply voltage
operating regulator on 5.6 14.4 25 V
jump start t ≤ 10 minutes −−30 V
I
q(tot)
load dump protection t ≤ 50 ms; t
total quiescent supply current standby mode − 95 120 µA
≥ 2.5 ms −−50 V
r
Voltage regulator
V
V
REG
REGd
output voltage regulator 7 V ≤ VP≤ 18 V 4.85 5.0 5.15 V
≤ 150 mA 4.8 5.0 5.2 V
REG
drop-out voltage I
0.5 mA ≤ I
= 150 mA −−0.5 V
REG
ORDERING INFORMATION
TYPE
NUMBER
NAME DESCRIPTION VERSION
PACKAGE
TDA3606AT SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
1998 May 07 2
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection
BLOCK DIAGRAM
handbook, full pagewidth
V
V
P
V
I(bat)
(14.4 V)
17
6
C
LOAD DUMP
PROTECTION
REFERENCE
TDA3606A
4
BATTERY
BUFFER
7
GND
REG
REGULATOR
4.7
kΩ
&
4.7
kΩ
1 to 3, 8 to 13, 18 to 20
n.c.
16
14
15
MGK597
(5 V/150 mA)
5
RES2
RES1
V
O(bat)
TDA3606A
REG
Fig.1 Block diagram.
PINNING
SYMBOL PIN DESCRIPTION
n.c. 1 to 3 not connected; heat spreader
V
I(bat)
V
O(bat)
V
C
4 battery input voltage
5 battery detection output voltage
6 reset delay capacitor
GND 7 ground (0 V)
n.c. 8 to 13 not connected; heat spreader
RES2 14 reset 2 output
RES1 15 reset 1 output
REG 16 regulator output
V
P
17 supply voltage
n.c. 18 to 20 not connected; heat spreader
handbook, halfpage
n.c.
1
n.c.
2
n.c.
3
V
4
I(bat)
V
O(bat)
V
GND
n.c.
n.c.
n.c.
5
6
C
7
8
9
10
TDA3606AT
MGK600
Fig.2 Pin configuration.
n.c.
20
19
n.c.
18
n.c.
17
V
P
16
REG
RES1
15
RES2
14
n.c.
13
n.c.
12
n.c.
11
1998 May 07 3
Philips Semiconductors Product specification
Multiple voltage regulator with battery
detection
FUNCTIONAL DESCRIPTION
The TDA3606A is a voltage regulator intended to supply a
microprocessor (e.g. in car radio applications). Because of
low voltage operation of the application, a low-voltage drop
regulator is used in the TDA3606A.
This regulator will switch on when the supply voltage
exceeds 7.6 V for the first time and will switch off again
when the output voltage of the regulator drops below
2.4 V. When the regulator is switched on, the RES1 and
RES2 outputs (RES2 can only be HIGH when RES1 is
HIGH) will go HIGH after a fixed delay time (fixed by an
external delay capacitor) to generate a reset to the
microprocessor.
handbook, full pagewidth
TDA3606A
RES1 will go HIGH by an internal pull-up resistor of 4.7 kΩ,
and is used to initialize the microprocessor. RES2 is used
to indicate that the regulator output voltage is within its
voltage range. This start-up feature is built-in to secure a
smooth start-up of the microprocessor at first connection,
without uncontrolled switching of the regulator during the
start-up sequence.
All output pins are fully protected. The regulator is
protected against load dump and short-circuit (foldback
current protection).
Interfacing with the microprocessor can be accomplished
by means of a battery Schmitt-trigger and output buffer
(simple full/semi on/off logic applications). The battery
output will go HIGH when the battery input voltage
exceeds the HIGH threshold level.
50 V
V
regulator
reset 1
reset 2
reset delay
capacitor
on/off switch
battery input
battery output
P
4.35 V 4.35 V
2 V 2 V
Fig.3 Timing diagrams.
2.4 V
2.1 V
2 V
MGB857
1998 May 07 4
Philips Semiconductors Product specification
Multiple voltage regulator with battery
TDA3606A
detection
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
P
V
P
V
I(bat)p
V
I(bat)n
P
tot
T
stg
T
amb
T
j
THERMAL CHARACTERISTICS
supply voltage
operating regulator on − 25 V
jump start t ≤ 10 minutes − 30 V
load dump protection t ≤ 50 ms; t
≥ 2.5 ms − 50 V
r
reverse battery voltage non-operating −−18 V
positive pulse voltage at battery input VP= 14.4 V; RI=5kΩ− 50 V
negative pulse voltage at battery input VP= 14.4 V; RI=5kΩ− −100 V
total power dissipation T
=25°C − 2.5 W
amb
storage temperature non-operating −55 +150 °C
operating ambient temperature −40 +85 °C
junction temperature operating −40 +150 °C
SYMBOL PARAMETER CONDITIONS VALUE UNIT
R
R
th (j-p)
th (j-a)
thermal resistance from junction to pins 20 K/W
thermal resistance from junction to
ambient
in free air; note 1 50 K/W
in free air; note 2 60 K/W
Notes
1. On IMS board.
2. On standard board with double sided copper area connected to pins.
QUALITY SPECIFICATION
In accordance with
Handbook”
. The handbook can be ordered using the code 9397 750 00192.
“SNW-FQ-611E”
. The number of the quality specification can be found in the
“Quality Reference
1998 May 07 5
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