Datasheet > LTC4056-4.2

LTC4056-4.2

更新时间： 2024-09-30 05:43:59

品牌	Logo	应用领域
凌特 - Linear		电池
页数	文件大小	规格书
16页	204K
描述
Linear Li-Ion Charger with Termination in ThinSOT

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LTC4056-4.2 数据手册

LTC4056-4.2

Linear Li-Ion Charger

with Termination in ThinSOT

FEATURES

DESCRIPTIO

■

Standalone Li-Ion Charger with Termination

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

fewexternalcomponents, theLTC4056formsaverysmall

standalone charger for single cell lithium-ion batteries.

■

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

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.

■

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)

■

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.

Low Profile (1mm) SOT-23 Package

APPLICATIO S

■

Cellular Telephones

■

Handheld Computers

■

Digital Cameras

Charging Docks and Cradles

Low Cost and Small Size Chargers

The LTC4056 is available in a low profile (1mm) 8-lead

■

SOT-23 (ThinSOT^TM) package.

■

, LTC and LT are registered trademarks of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIO

V_INUndervoltage Charge

Current Limiting

800

= 4V

BAT

CONSTANT

CURRENT

= 1.3k

PROG

700

600

500

400

300

200

100

= 700mA

CHG

INPUT Z = 100mΩ

LTC4056

700mA

4.5V TO 6.5V

SENSE

UNDERVOLTAGE CHARGE

CURRENT LIMITING

CHARGE

STATUS

CHRG

DRIVE

ZXT1M322

TIMER/SHDN BAT

1µF

1-CELL

4.2V Li-Ion

PROG

GND

1µF

1.3k

UNDERVOLTAGE

LOCKOUT

AT 4.35V

4056-4.2 TA01

4.45 4.50 4.55 4.60 4.65

4.75

4.70

4.40

(V)

4056 TA02

405642f

12 3 4 5 6 7...16

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与LTC4056-4.2相关器件

型号	品牌	获取价格	描述	数据表
LTC4056ETS8-4.2	Linear	获取价格	Linear Li-Ion Charger with Termination in ThinSOT
LTC4056ETS8-4.2#TR	Linear	获取价格	LTC4056-4.2 - Linear Li-Ion Charger with Termination in ThinSOT; Package: SOT; Pins: 8; Te
LTC4056ETS8-4.2#TRM	Linear	获取价格	LTC4056-4.2 - Linear Li-Ion Charger with Termination in ThinSOT; Package: SOT; Pins: 8; Te
LTC4057	Linear	获取价格	Standalone Linear Li-lon Battery Charger with Thermistor Input
LTC4057	Linear Systems	获取价格	Standalone 250mA Li-Ion Battery Charger in 2
LTC4057-4.2	Linear	获取价格	Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT
LTC4057-4.2	ADI	获取价格	采用 ThinSOT 封装并具热调节功能的线性锂离子电池充电器
LTC4057ES5-4.2	Linear	获取价格	Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT
LTC4057ES5-4.2#PBF	Linear	获取价格	暂无描述
LTC4057ES5-4.2#TR	Linear	获取价格	LTC4057-4.2 - Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT; Package: S

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