LTC4056-4.2 linear Li-Ion Charger with Termination in ThinSOT

The LTC®4056 is a low cost, single-cell, constant-current/ constant-voltage Li-Ion battery charger controller with a programmable termination timer. When combined with a few external components, the LTC4056 forms a very small standalone charger for single cell lithium-ion batteries.

Charge current and charge time are set externally with a single resistor and capacitor, respectively. The LTC4056 charges to a final float voltage accurate to ±0.6%. Manual shutdown is accomplished by grounding the TIMER/ SHDN pin, while removing input power automatically puts the LTC4056 into a sleep mode. Both the shutdown and sleep modes drain near zero current from the battery; the shutdown mode reduces supply current to 40µA.

The output driver is both current limited and thermally protected to prevent operating outside of safe limits. No external blocking diode or sense resistor is required. The LTC4056 also includes low battery charge conditioning (trickle charging), undervoltage charge current limiting, automatic recharge and a charge status output.

The LTC4056 is available in a low profile (1mm) 8-lead SOT-23 (ThinSOT™) package

产品特点 Features

Standalone Li-Ion Charger with Termination
Programmable Termination Timer
No Sense Resistor or Blocking Diode Required
Suitable for USB-Powered Charging
Undervoltage Charge Current Limiting
Preset Charge Voltage with ±0.6% Accuracy
Programmable Charge Current: 200mA to 700mA
Automatic Recharge with Shortened Charge Cycle
Self-Protection for Overcurrent/Overtemperature
40µA Supply Current in Shutdown Mode
Negligible Battery Drain Current in Shutdown
Low Battery Charge Conditioning (Trickle Charging)
CHRG Status Output including AC Present
PCB Total Solution Area only 75mm² (700mA)
Low Profile (1mm) SOT-23 Package

应用

Cellular Telephones
Handheld Computers
Digital Cameras
Charging Docks and Cradles
Low Cost and Small Size Chargers

典型应用图

参数

LTC4056-4.2 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC4056ETS8-4.2	SOT	8	E	$2.14
LTC4056ETS8-4.2#PBF	SOT	8	E	$2.14
LTC4056ETS8-4.2#TR	SOT	8	E	$2.14	$1.41
LTC4056ETS8-4.2#TRM	SOT	8	E	$2.14	$1.43
LTC4056ETS8-4.2#TRMPBF	SOT	8	E	$2.14	$1.43
LTC4056ETS8-4.2#TRPBF	SOT	8	E	$2.14	$1.41

LTC4056-4.2 数据手册及相关资料下载

数据手册(英文) : LTC4056-4.2 - linear Li-Ion Charger with Termination in ThinSOT.PDF
可靠性数据 : R421 Reliability Data .PDF
产品选型卡 : I2C Battery Gas Gauges.PDF