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LTC3552 Datasheet, PDF (22/24 Pages) Linear Technology – Standalone Linear Li-Ion Battery Charger and Dual Synchronous Buck Converter
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LTC3552
TYPICAL APPLICATION
Full-Featured Single-Cell Li-Ion
Charger Plus Dual Step-Down Converter
VIN
5V
VOUT2
2.5V/400mA
1µF
COUT2
4.7µF
CER
LTC3552
VIN
RUN1
RUN2
1k
BAT
1k
CHRG
PWR
VCC
EN
MODE/SYNC
4.7µH
SW2
CFF2
68pF
R4
887k
VFB2
R3 GND
280k
POR
SW1
ITERM
VFB1
PROG
1k
2k
500mA
+
10µF
4.2V
1-CELL
Li-Ion
BATTERY
100k
2.2µH
R4
604k
CFF1
33pF
R3
301k
VOUT1
1.8V/800mA
COUT1
10µF
CER
3552 TA02
3552f
22
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