Datasheet

LTC4219
9
4219fb
FUNCTIONAL DIAGRAM
4219 BD
20k
V
DD
EN1
OUT
FB
PG
GND
I
MON
INTV
CC
INTV
CC
100µA
TIMER
FLT
+
–
I
SET
GATE
SENSE
(EXPOSED PAD)
X1
CLAMP
0.6V POSITIVE
TEMPERATURE
COEFFICIENT
REFERENCE
INTERNAL 25m
MOSFET
INTERNAL 7.5m
SENSE RESISTOR
CHARGE
PUMP
AND GATE
DRIVER
OUT
3.1V
GEN
LOGIC
INRUSHCS
CM
0.3V/ms
FOLDBACK
0.6V
2.65V
1.235V
+–
+
–
PG
1.235V
–
+
EN1
0.21V
–
+
TM1
1.235V
–
+
TM2
1.235V
–
+
EN2
V
DD
V
DD
2.73V
+
–
UVLO1
EN2
2µA
–
+
UVLO2
OUT
* 100k (LTC4219-5)
150k (LTC4219-12)
** 40k (LTC4219-5)
20k (LTC4219-12)
*
**