Internal Ic Diagram; Power Board - Philips HTS3565/98 Service Manual

7 - 1

POWER BOARD

TABLE OF CONTENTS

Internal IC Diagram ........................................................................... 7-1

Circuit Diagram .................................................................................. 7-2
PCB Layout Top View ....................................................................... 7-3
PCB Layout Bottom View .................................................................. 7-4
INTERNAL IC DIAGRAM - AP3843GMTR
INTERNAL IC DIAGRAM - KA7500C
D
RT
6
OSCILLATOR
5
CT
CK
DEAD
4
TIME
1.2V
CONTROL
PWM
COMP
EA(+) 2
+
1
-
1
EA(-)
16
EA(+)
+
2
-
15
EA(-)
3
COMP INPUT
7 - 1
OUTPUT CONTROL
13
8
Q
9
11
Q
10
12
5V
BAND GAP
14
PEFERENCE
0.7MA
7
C1
E1
C2
E2
VCC
VREF
GND