Aiwa xc-rw700 Service Manual page 52

IC BLOCK DIAGRAM - 6/7
QQ
3 7 63 1515 0
IC, KA78R12
Vin
1
HIGH / LOW
Vdis
TE
L 13942296513
IC, LB11995H
V CC 1
22
U IN 1
20
+
U IN 2
—
21
V IN 1
18
+
V IN 2
19 —
W IN 1
16
+
W IN 2 —
17
V H
15
—
+
—
+
www
—
+
.
http://www.xiaoyu163.com
THERMAL SHUTDOWN
BANDGAP
REFERENCE
OUTPUT
ON / OFF
4
-
+
1.4V
Hall power
supply
Forward/
reverse
x ao
y
13 14
i
FG RS
http://www.xiaoyu163.com
8
OVERVOLTAGE
PROTECTION
-
+
SOA PROTECT I ON
SHORTCIRCUIT
PROTECTION
3
GND
Q Q
3 6 7 1 3
Current
limiter
—
+
Reference
Thermal shutdown
voltage
u163
6 11
.
FC S/S
-52-
2 9 9 4 2 8
Q1
2 Vo
R1
R2
1 5 0 5 8 2 9 9 4
Short brake
—
+
m
co
9 9
2 8 9 9
V CC 2
26
23 RF
U OUT
27
28 V OUT
W OUT
2
1 PWR GND
V CC 3
25
12 BRAKE
V CREF
5
V C
4
LMC
7
SIG GND
8