LTC4057 Datasheet, PDF (12/12 Pages) Linear Technology – Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT

LTC4057- 4.2
TYPICAL APPLICATIO S
800mA Li-Ion Charger with
External Power Dissipation
V_IN = 5V
1µF
ON OFF
0.25Ω
4
V_CC
800mA
3
BAT
LTC4057-4.2
2
SHDN
PROG ⁵
GND
+
2 _1.25k
4057 TA02
Basic Li-Ion Battery Charger with
Reverse Polarity Input Protection
5V WALL
ADAPTER
4
V_CC
500mA
3
BAT
LTC4057-4.2
1µF
2
ON OFF SHDN
PROG ⁵
GND
+
2
2k
4057 TA03
RELATED PARTS
PART NUMBER
LT1571
LTC1729
LTC1730
LTC1731
LTC1732
LTC1733
LTC1734
LTC1734L
LTC1998
LTC4050
LTC4052
LTC4053
LTC4054
LTC4410
DESCRIPTION
COMMENTS
200kHz/500kHz Switching Battery Charger
Up to 1.5A Charge Current; Preset and Adjustable Battery Voltages
Lithium-Ion Battery Charger Termination Controllers Time or Charge Current Termination, Preconditioning 8-Lead MSOP
Lithium-Ion Battery Pulse Charger
No Blocking Diode Required, Current Limit for Maximum Safety
Lithium-Ion Linear Battery Charger Controller
Simple Charger uses External FET, Features Preset Voltages, C/10
Charger Detection and Programmable Timer
Lithium-Ion Linear Battery Charger Controller
Simple Charger uses External FET, Features Preset Voltages, C/10
Charger Detection and Programmable Timer, Input Power Good Indication
Monolithic Lithium-Ion Linear Battery Charger
Standalone Charger with Programmable Timer, Up to 1.5A Charge Current
Lithium-Ion Linear Battery Charger in ThinSOT
Simple ThinSOT Charger, No Blocking Diode, No Sense Resistor Needed
Lithium-Ion Linear Battery Charger in ThinSOT
Low Charge Current Version of LTC1734
Lithium-Ion Low Battery Detector
1% Accurate 2.5µA Quiescent Current, SOT-23
Lithium-Ion Linear Battery Charger Controller
Simple Charger uses External FET, Features Preset Voltages, C/10
Charger Detection and Programmable Timer, Input Power Good Indication,
Thermistor Interface
Monolithic Lithium-Ion Battery Pulse Charger
No Blocking Diode or External Power FET Required
USB Compatible Monolithic Li-Ion Battery Charger Standalone Charger with Programmable Timer, Up to 1.25A Charge Current
Standalone Linear Li-Ion Battery Charger
with Integrated Pass Transistor in ThinSOT
Thermal Regulation Prevents Overheating, C/10 Termination,
C/10 Indicator
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
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^q FAX: [phone] ^q www.linear.com
4057f
LT/TP 0503 1K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2003