Datasheet

LTC4218
8
4218ff
FUNCTIONAL DIAGRAM
4218 BD
20k
V
DD
V
DD
V
DD
*
*
*
*
* DFN ONLY
UV
FB
PG
EXPOSED PAD*
I
MON
INTV
CC
INTV
CC
100μA
TIMER
FLT
+
–
I
SET
GATE SOURCE
GND
X1
CLAMP
0.6V
REFERENCE
CHARGE
PUMP
AND GATE
DRIVER
3.1V
GEN
LOGIC
CS
CM
FOLDBACK
0.6V
2.65V
1.235V
+–
+
–
PG
1.235V
–
+
UV
0.2V
–
+
TM1
1.235V
–
+
TM2
0.62V
–
+
RST
V
DD
V
DD
2.73V
+
–
UVLO1
OV
1.235V
–
+
OV
2μA
–
+
UVLO2
SENSE
–
SENSE
+
SOURCE
*
*
150k
20k
140k
20k
224k
20k