JVC KS-AX4500 Service Manual page 8

KS-AX4500
Description of major ICs
PIN CONNECTIONS
Noninv
1
Input
Inv
2
Input
Compen/PWN
3
Comp Input
Dead Time
4
Control
C T
5
6
R T
Ground 7
C1 8
TL494
6
Oscillator
5
0.12V
4
0.7V
0.7mA
1
1 2
1-8
(TOP View)
Dead-Time
Comparator
PWM
Comparator
2
3 15 16
Noninv
16
Input
Inv
15
Input
V ref
14
Output
13
Control
V CC
12
11
C2
10 E2
9 E1
13
D Q
Flip-
Flop
Ck Q
4.9V
UV
Lockout
3.5V
14
8
Q1
9
11
Q2
10
12
Reference
Regulator
7