HCD-X1V
IC901 STR-F6138-LF1352 (US, Canadian models)
IC901 STR-F6168-LF1352 (AEP, UK models)
CURRENT
MIRROR
OVER
CURRENT
PROTECT
2
LOGIC
OVER
CURRENT
FEED
PROTECT
BACK
2
1
IC921 STR-V153
OVP
+
−
TSD
DRIVE
POWER
MOS FET
BLANKING
OCP
+
−
BUFFER
1 2 3
4
80
OSC
DELAY
DELAY
BOTTOM
SKIP
LOGIC
OVER
INH
INH
CURRENT
2
1
PROTECT
1
SWITCHING
REGULATOR
BLOCK
2
3
INTERNAL
DELAY
LATCH
OLP
+
−
BURST
DISCHARGE
5
6 7
LATCH
OVER VOLTAGE
THERMAL
PROTECT
SHUT DOWN
INTERNAL BIAS
UNDER VOLTAGE
4
UVLO
+
−
BIAS
PRC LATCH
Q S
+
−
R
+
−
–
+
FB
OVER LOAD
PROTECT
LOCK OUT
5
OFF TIMER
8