Table of Contents
Advertisement
13.2. POWER
ZA1103
A
F1101
N
P1101
1
2
ZA1105
3
1
2
ZA1106
3
1
2
ZA1107
3
K1129
IC1150
SWITCHING IC
IC-DETAIL BLOCK DIAGRAM
LATCH RELEASE/
OVER VOLTAGE
PROTECTOR/
OVER HEATING
PROTECTOR
Z/C
ZERO CURRENT
1
DET./ONDEAD TIMER
STANDBY
CIRCUIT
FB
2
ON WIDTH
TIMER
GND
3
ZA1104
L1120
1
VA1110
4
ZA1150
ZA1151
1
7
VIN
DRAIN
UVLO
UVLO
+
+
START-UP
-
-
CIRCUIT
VCC(START)
VCC(STARTUP OFF)
/VCC(STOP)
/VCC(STARTUP ON)
IDP(LIMIIT/
BURST)SENS.
CONTROL
SOFT-DRIVE
CIRCUIT
CIRCUIT
OCP THRESHOLD
COMPARATOR/
RESTERT
BURST MODE
TIMER
OCP THRESHOLD
COMPARATOR
SOURCE
/OCL
L1121
C1121
2
1
2
3
4
3
C1122
C1123
LB1126
2
4
7
IC1150
3
5
9
R1152
C1151
D1157
R1158
9
VCC
4
IC1601, IC1701
SWITCHING IC
IC-DETAIL BLOCK DIAGRAM
8
7
CS
LEVEL
SHIFT
V5
UVLOcomp
+
-
VREF
VIN
5
1
2
LB1122
D1140
4
1
3
2
D1141
$
LB1123
R1153
R1150
D1151
C1150
R1151
D1152
D1156
R1154
R1157
C1153
5
6
EXT
GND
FB
0.8V
CONTROL LOGIC
+
-
CNT.
COMP
-
- +
+
V5/PWON
VREF/SS
CC
3
4
C1125
T1150
P1
12
NC
PU
11
P2
10
NC
9
V2
8
V1
NC
7
Q1200
4
1
C1
3
2
$
HOT
COLD
Important Safety
Components iden
the special charac
When replacing a
use only the same
Advertisement
Table of Contents
