Datasheet

LTC3873
6
3873fa
FUNCTIONAL DIAGRAM
RUN/SS
V
CC
SWGND
I
TH
V
FB
NGATE
3873 FD
IPRG
SLOPE
COMPENSATION
200kHz
OSCILLATOR AND
MAX DUTY CYCLE
CURRENT
COMPARATOR
SR
Q
V
IN
VOLTAGE
REFERENCE
UNDERVOLTAGE
LOCKOUT
–
+
I
TH
BUFFER
SWITCHING
LOGIC CIRCUIT
CURRENT LIMIT
CLAMP
INTERNAL
SOFT-START
RAMP
–+
I
LIM
RS
LATCH
1.2V
1.2V
V
CC
9.5V
SHUNT
REGULATOR
UV
SHUTDOWN
COMPARATOR
SHDN
ERROR
AMPLIFIER
3µA
–
+