JBL MS-8 - Page 83

2002 Apr 10 4
Philips Semiconductors Product specification
Multiple voltage regulator with switch and
ignition buffer
TDA3681
BLOCK DIAGRAMS
handbook, full pagewidth
MGL902
REGULATOR 2
REGULATOR 4
REGULATOR 1
16
14
7
+
TEMPERATURE
LOAD DUMP
PROTECTION
17
11
9
3
10
8
13
POWER SWITCH
BACKUP SWITCH
BACKUP CONTROL
&
&
&
&
OR
GND
(14.4 V)
TDA3681J
TDA3681JR
RES
REG2
REG4
REG1
(14 V/
3 A)
(14 V/
100 mA)
(5 V/
300 mA)
(3.3 V/
1 A)
(8.5 V/
600 mA)
SW
V
P1
ENSW
EN4
V
P2
EN1/3
C
RES
BU
HOLD
12
1
IGNITION BUFFER
5
IGN
OUT
IGN
IN
6
4
REGULATOR 3
&
REG3
(5 V/
1400 mA)
2
15
Fig.1 Block diagram of TDA3681J and TDA3681JR.
MS-8
82