LTC4054-4.2/LTC4054X-4.2
U
TYPICAL APPLICATIO S
USB/Wall Adapter Power Li-Ion Charger
Full Featured Single Cell Li-Ion Charger
V
= 5V
I
IN
BAT
5V WALL
ADAPTER
3
BAT
+
LTC4054-4.2
Li-Ion
CELL
1µF
500mA
4
4
USB
POWER
V
CC
2.5k
5
V
3
5
CC
1µF
PROG
GND
BAT
330Ω
100mA/
500mA
LTC4054-4.2
2
1k
10k
1
+
CHRG
PROG
µC
GND
2
2k
405442 TA05
SHDN
800mA Li-Ion Charger with External Power Dissipation
405442 TA02
V
= 5V
IN
Basic Li-Ion Charger with Reverse Polarity Input Protection
0.25Ω
800mA
4
3
5
V
BAT
LTC4054-4.2
CC
500mA
4
3
5
5V WALL
ADAPTER
1µF
V
CC
BAT
LTC4054-4.2
PROG
GND
2
+
+
PROG
1µF
1.25k
GND
2
2k
405442 TA03
405442 TA04
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PART NUMBER
DESCRIPTION
COMMENTS
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LTC4056
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Standalone Lithium-Ion Linear Battery Charger
in ThinSOT
Standalone Charger with Programmable Timer, No Blocking Diode,
No Sense Resistor Needed
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with Thermal Regulation in ThinSOT
No External MOSFET, Sense Resistor or Blocking Diode Required,
Charge Current Monitor for Gas Gauging
USB Power Manager
For Simultaneous Operation of USB Peripheral and Battery Charging from USB
Port, Keeps Current Drawn from USB Port Constant, Keeps Battery Fresh, Use
with the LTC4053, LTC1733, or LTC4054
405442xf
LT/TP 0903 1K • PRINTED IN USA
16 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
●
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 2003
Linear [ Linear ]
