LT4256-1/LT4256-2
7
425612fa
BLOCK DIAGRA
W
+
–
–
+
–
+
108µA
V
P
V
P
LOGIC
2V
14mV ~ 55mV
9.8V
4V
V
CC
INTERNAL
UV
TIMER LOW
TIMER HIGH
GND
0.65V
4.65V
–
+
–
+
3.99V3.99V
PWRGD
TIMER
4256 BD
V
CC
SENSE
V
P
GEN
FB
3µA
UV
GATE
+
–
+
–
CHARGE
PUMP
AND
GATE
DRIVER
REF GEN
8 7
6
3
5
4
CURRENT
LIMIT
FOLDBACK
2
1
UV
