Datasheet > ETA40561

ETA40561

更新时间： 2024-09-18 17:01:03

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
9页	442K
描述
1.2A Linear 4.2V Charger

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ETA40561 数据手册

ETA40561

1.2A/16V Fully Integrated Linear Charger for 1 Cell Li-ion Battery

DESCRIPTION

FEATURES

ETA40561 is a single cell, fully integrated constant current

(CC)/constant voltage (CV) Li-ion battery charger. Its

compact package with minimum external components

requirement makes the ETA40561 ideal for portable

applications. No external sense resistor or blocking diode is

necessary for the ETA40561. Build-in thermal feedback

mechanism regulates the charge current to control the die

temperature during high power operation or at elevated

ambient temperature. The ETA40561 has the function of

pre-charge, which can charge the deeply discharged

batteries by trickle. The fast charge current can be

programmed by an external resistor. CV regulation mode is

automatically enabled once the battery’s charging curve

reaches the constant voltage portion. The output current

then decays and is finally terminated once the charge

current drops to 1/10 of the programmed value. The

ETA40561 keeps monitoring the battery voltage and

enables a new charge cycle once the voltage drops by

120mV below the CV value.



16V Input Standoff Voltage

4.2V Charge Termination Voltage

2.93V Trickle Charge Threshold

Charge Current Programmable, Up to 1.2A

250nA BAT Current when No Charging

Soft-start Limits in-rush Current

ESOP8 Package

APPLICATIONS



E-cigarette

Toys

Bluetooth applications

Li-ion battery powered devices

ETA40561 is available in an ESOP8 package.

TYPICAL APPLICATION

VIN

BAT

NTC

ISET

VBAT/VSYS

STAT

Li⁺

Battery

10uF

ETA40561

4.7uF

STDBY

RNTC

RISET

GND

PART No.

PACKAGE

TOP MARK

Pcs/Reel

ORDERING INFORMATION

ETA40561

YWW2L

ETA40561E8A

ESOP8

4000

www.etasolution.com

Empower Thinkers

12 3 4 5 6 7...9

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