Datasheet

LTC4425
14
4425f
TYPICAL APPLICATIONS
USB to High Peak Power 3.3V Charging
3 × AA Alkaline to High Peak Power 3.3V Charging
V
OUT
V
MID
FB
PROG
PFO
3.3V
TO
LOAD
2.1M
2.2µF
1.2M
2k
470k
1F
1F
V
IO
LTC4425
EN
SEL
PFI_RET
PFI
V
IN
5V, 500mA
USB
1.5M
1.2M
4425 TA03
µC
V
OUT
V
MID
FB
PROG
PFO
3.3V, 2A
TO
LOAD
CURRENT
MONITOR
2.1M
1.2M
500
470k
1F
1F
LTC4425
EN
SEL
PFI_RET
PFI
V
IN
4.5V TO 3.6V
1.5M
1.2M
3s AA
4425 TA04
µC
V
IO
2.2µF
Li-Ion High Peak Power Battery Buffer
V
OUT
V
MID
PROG
PFO
TO
LOAD
CURRENT
MONITOR
0.6F
0.6F
LTC4425
FB
PFI
PFI-RET
EN
Li-Ion
1.5M
500
1.2M
470k
SEL
V
IN
4425 TA04a
+
V
IO
2.2µF