Sony HCD-HDX285 - IC Block Diagrams; Power Board IC Block Diagrams

HCD-HDX285/HDX287WC/HDX585/HDX587WC/HDX589W/HDX685/HDX686W
68
OVER
CURRENT
PROTECT
2
LOGIC
OSC
INTERNAL BIAS
DELAY
DELAY
LATCH
CURRENT
MIRROR
OVER
CURRENT
PROTECT
2
OVER
CURRENT
PROTECT
1
FEED
BACK
INH
2
INH
1
BOTTOM
SKIP
LOGIC
OCP/INH
1
S/GND
2
DRAIN
3
VCC
4
FB/OCP
5
UNDER VOLTAGE
LOCK OUT
OVER LOAD
PROTECT
THERMAL
SHUT DOWN
OVER VOLTAGE
PROTECT
SWITCHING
REGULATOR
BLOCK
1
Z/C
ZERO
CURRENT
DETECT
ONDEAD
TIMER
STANDBY
CIRCUIT
2
FB
+
−
ON
TIMER
S
R
Q
SOFT-DRIVE
CIRCUIT
BURST MODE
OVERCURRENT
THRESHOLD
COMPARATOR
OVERCURRENT
PROTECT
THRESHOLD
COMPARATOR
5
EMITTER/OCL
OVERVOLTAGE
PROTECT
COMPARATOR
THERMAL
SHUTDOWN
CIRCUIT
LATCH CIRCUIT
RESET
COMPARATOR
S
R
Q
UNDERVOLTAGE
LOCKOUT
COMPARATOR
START-UP CIRCUIT
UNDERVOLTAGE
LOCKOUT
COMPARATOR
START-UP
CIRCUIT
4
VCC
3
GND
RESTART
TIMER
7
VIN
9
COLLECTOR
– POWER Board –
IC901 STR-F6138-LF1352 (US and Canadian models)
IC901 STR-F6168-LF1352 (240V AC area in E and Saudi Arabia models)
IC921 MR4020-7103