Datasheet > ETA4042

ETA4042

更新时间： 2024-09-18 17:01:19

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
8页	467K
描述
1A Linear 4.2V Charger

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ETA4042 数据手册

ETA4042

30V Input Standoff, 1A Fully Integrated Linear Charger for

1 Cell Li-ion Battery

DESCRIPTION

FEATURES

ETA4042 is a single cell, fully integrated constant current  30V Input Standoff Voltage

(CC)/constant voltage (CV) Li-ion battery charger. Its  4.2V Charge Termination Voltage

compact package with minimum external components  2.6V Trickle Charge Threshold

requirement makes the ETA4042 ideal for portable  Input Over Voltage Protection

applications. No external sense resistor or blocking diode is



Charge Current Programmable, up to 1A

necessary for the ETA4042. Build-in thermal feedback  400nA BAT Current when No Charging

mechanism regulates the charge current to control the die  Soft-start Limits in-rush Current

temperature during high power operation or at elevated  DFN3x3-10 Package

ambient temperature. The ETA4042 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

APPLICATIONS

and is finally terminated once the charge current drops to

the current threshold set by RIBF. The ETA4042 keeps  E-cigarette

monitoring the battery voltage and enables a new charge  Toys

cycle once the voltage drops by 200mV below the CV value.  Bluetooth Applications

ETA4042 is in a DFN3x3-10 package.



Li-ion Battery Powered Devices

TYPICAL APPLICATION

VIN

BAT

NTC

VBAT/VSYS

1.5K

RNTC1

RNTC2

STAT

ETA4042

1.5K

4.7uF

2.2uF

STDBY

Li+

Battery

RISET

ISET

nEN

IBF

GND

CSS

RIBF

PART No.

PACKAGE

TOP MARK

ETA4042

Pcs/Reel

ORDERING INFORMATION

ETA4042D3K

DFN3x3-10

5000

YWW2L

www.etasolution.com

Empower Thinkers

12 3 4 5 6 7 8

中文翻译

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