LTC4425 Linear Technology, LTC4425 Datasheet - Page 14

• Manufacturer Part Number: LTC4425
• Description: Linear SuperCap Charger
• Manufacturer: Linear Technology

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