Datasheet

LT3837
8
3837fd
BLOCK DIAGRAM
11
SENSE
–
12
SENSE
+
C
CMP
V
CC
3V
TO FB
PGATE
SGATE
CURRENT
SENSE AMP
R
CMPF
50k
LOAD
COMPENSATION
–
+
–
+
–
+
–
+
–
+
–
+
V
CC
2
UVLO
DISABLE
0.8V
10
OSC
7
t
ON
3
PGDLY
15
ENDLY
4
SYNC
5
1.237V
REFERENCE
(V
FB
)
INTERNAL
REGULATOR
UVLO
3V
1.25V
COLLAPSE DETECT
ERROR AMP
CLAMPS
0.7
1.3
+
–
S
R
Q
Q
1V
8
FB
9
V
C
6
SFST
TSD
CURRENT TRIP
SLOPE COMPENSATION
CURRENT
COMPARATOR
LOGIC
BLOCK
–
+
–
+
13
R
CMP
GATE DRIVE
14
PG
16
SG
1
GND
17
OSCILLATOR
SET
ENABLE
V
CC
GATE DRIVE
+
–
OVERCURRENT
FAULT
3837 BD