Datasheet

LTC3642
7
3642fc
BLOCK DIAGRAM
–
+
1
LOGIC
AND
SHOOT-
THROUGH
PREVENTION
PEAK CURRENT
COMPARATOR
SW
V
IN
SS
VOLTAGE
REFERENCE
FEEDBACK
COMPARATOR
5µA
3642 BD
IMPLEMENT DIVIDER
EXTERNALLY FOR
ADJUSTABLE VERSION
R2
R1
C1
V
OUT
L1
REVERSE CURRENT
COMPARATOR
–
+
–
+
–
+
+
0.800V
4
RUN
1.2V
5
I
SET
3
HYST
7
GND
9
GND
8
V
OUT
/V
FB
6
1µA
2
C2
PART
NUMBER
LTC3642
LTC3642-3.3
LTC3642-5
R1
0
2.5M
4.2M
R2
∞
800k
800k