Panasonic DMR-ES45VP Service Manual page 168

720
WITCHING REGULATOR
ETAIL BLOCK DIAGRAM
7 6
NC NC
DRIVER BIAS
CURRENT THERMAL
LIMITTER SHUTDOWN
FERENCE
NC CN
2 3
60
Z/C
1
FB
2
5
CONT
GND
4
IC11301
SWITCHING IC
IC-DETAIL BLOCK DIAGRAM
UVLO
+
LATCH RELEASE/
-
OVER VOLTAGE
PROTECTOR/
VCC(START)
OVER HEATING
/VCC(STOP)
PROTECTOR
ZERO CURRENT
DET./ONDEAD TIMER
STANDBY
CIRCUIT
ON WIDTH
TIMER
IC11801
D +3.8V SWITCHING REGULATOR
IC-DETAIL BLOCK DIAGRAM
8 7
CS EXT
CONTROL LOGIC
LEVEL
SHIFT
V5
UVLOcomp
+
-
VREF
VIN PWON
1 2
DMR-ES45VP/ES46VP IC-Detail Block Diagram
UVLO
+
START-UP
- CIRCUIT
VCC(STARTUP OFF)
/VCC(STARTUP ON)
IDP(LIMIIT/
BURST)SENS.
CONTROL SOFT-DRIVE
CIRCUIT CIRCUIT
6 5
GND FB
0.8V
+ -
CNT.
COMP
- - + +
VREF/SS CC
3 4
IC11201 Detail Block Diagram
IC11301 Detail Block Diagram
IC11601 Detail Block Diagram
IC11720 Detail Block Diagram
IC11801 Detail Block Diagram
VCC
4
DRAIN
5
GND
3