INTEGRATED CIRCUITS
DATA SHEET
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 V
P
-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
P
of regulator
output.
QUICK REFERENCE DATA
SYMBOL
Supplies
V
P
supply voltage
operating
jump start
load dump protection
I
q(tot)
V
REG
V
REGd
total quiescent supply current
Voltage regulator
output voltage regulator
drop-out voltage
7 V
≤
V
P
≤
18 V
0.5 mA
≤
I
REG
≤
150 mA
I
REG
= 150 mA
4.85
4.8
−
5.0
5.0
−
regulator on
t
≤
10 minutes
t
≤
50 ms; t
r
≥
2.5 ms
standby mode
5.6
−
−
−
14.4
−
−
95
PARAMETER
CONDITIONS
MIN.
TYP.
GENERAL DESCRIPTION
TDA3606A
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.
MAX.
UNIT
25
30
50
120
V
V
V
µA
5.15
5.2
0.5
V
V
V
ORDERING INFORMATION
TYPE
NUMBER
TDA3606AT
PACKAGE
NAME
SO20
DESCRIPTION
plastic small outline package; 20 leads; body width 7.5 mm
VERSION
SOT163-1
1998 May 07
2
Philips Semiconductors
Product specification
Multiple voltage regulator with battery
detection
BLOCK DIAGRAM
TDA3606A
handbook, full pagewidth
VP
(14.4 V) 17
LOAD DUMP
PROTECTION
16
REGULATOR
(5 V/150 mA)
REG
REFERENCE
4.7
kΩ
14
RES2
&
VC
6
4.7
kΩ
15
RES1
TDA3606A
REG
4
VI(bat)
7
GND
n.c.
BATTERY
BUFFER
1 to 3, 8 to 13, 18 to 20
MGK597
5
VO(bat)
Fig.1 Block diagram.
PINNING
SYMBOL
n.c.
V
I(bat)
V
O(bat)
V
C
GND
n.c.
RES2
RES1
REG
V
P
n.c.
PIN
1 to 3
4
5
6
7
8 to 13
14
15
16
17
18 to 20
DESCRIPTION
not connected; heat spreader
battery input voltage
battery detection output voltage
reset delay capacitor
ground (0 V)
not connected; heat spreader
reset 2 output
reset 1 output
regulator output
supply voltage
not connected; heat spreader
VI(bat) 4
VO(bat) 5
VC 6
GND 7
n.c. 8
n.c. 9
n.c. 10
MGK600
handbook, halfpage
n.c. 1
n.c. 2
n.c. 3
20 n.c.
19 n.c.
18 n.c.
17 VP
16 REG
TDA3606AT
15 RES1
14 RES2
13 n.c.
12 n.c.
11 n.c.
Fig.2 Pin configuration.
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.
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.
handbook, full pagewidth
50 V
VP
4.35 V
regulator
4.35 V
2.4 V
reset 1
reset 2
reset delay
capacitor
on/off switch
2V
2V
battery input
2.1 V
2V
battery output
MGB857
Fig.3 Timing diagrams.
1998 May 07
4
Philips Semiconductors
Product specification
Multiple voltage regulator with battery
detection
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
V
P
operating
jump start
load dump protection
V
P
V
I(bat)p
V
I(bat)n
P
tot
T
stg
T
amb
T
j
reverse battery voltage
positive pulse voltage at battery input
negative pulse voltage at battery input
total power dissipation
storage temperature
operating ambient temperature
junction temperature
operating
PARAMETER
supply voltage
regulator on
t
≤
10 minutes
t
≤
50 ms; t
r
≥
2.5 ms
non-operating
V
P
= 14.4 V; R
I
= 5 kΩ
V
P
= 14.4 V; R
I
= 5 kΩ
T
amb
= 25
°C
non-operating
−
−
−
−
−
−
−
−55
−40
−40
25
30
50
CONDITIONS
MIN.
TDA3606A
MAX.
V
V
V
V
V
V
W
UNIT
−18
50
−100
2.5
+150
+85
+150
°C
°C
°C
THERMAL CHARACTERISTICS
SYMBOL
R
th (j-p)
R
th (j-a)
PARAMETER
thermal resistance from junction to pins
thermal resistance from junction to
ambient
in free air; note 1
in free air; note 2
CONDITIONS
VALUE
20
50
60
UNIT
K/W
K/W
K/W
Notes
1. On IMS board.
2. On standard board with double sided copper area connected to pins.
QUALITY SPECIFICATION
In accordance with
“SNW-FQ-611E”.
The number of the quality specification can be found in the
“Quality Reference
Handbook”.
The handbook can be ordered using the code 9397 750 00192.
1998 May 07
5
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