Philips 42PF9731D Service Manual page 185

Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.16.14 Diagram C, TDA8925ST (IC 7701)
Block Diagram
TDA8925ST/J
TDA8926J
4
EN1
CONTROL
1
AND
SW1
HANDSHAKE
2
REL1
9
STAB
temp
TEMPERATURE SENSOR
3
DIAG
current
CURRENT PROTECTION
15
POWERUP
14
EN2
CONTROL
17
SW2 AND
HANDSHAKE
16
REL2
Pin Configuration
SW1 1
REL1 2
DIAG 3
EN1 4
V DD1
5
BOOT1 6
OUT1 7
V SS1
8
TDA8925ST/J
TDA8926J
STAB 9
V SS2
10
OUT2 11
BOOT2 12
V DD2
13
EN2 14
POWERUP 15
REL2 16
SW2 17
Figure 9-42 Internal block diagram and pin configuration
BJ2.4U/BJ2.5U LA
V DD2 V DD1
13 5
6
BOOT1
DRIVER
HIGH
7
OUT1
DRIVER
LOW
V SS1
AND
V DD2
12
BOOT2
DRIVER
HIGH
11
OUT2
DRIVER
LOW
8 10
V SS1 V SS2
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9. EN 185