Datasheet > ETA4046

ETA4046

更新时间： 2024-09-18 17:01:43

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
8页	755K
描述
1.2A Linear 4.2V Charger

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ETA4046 数据手册

ETA4046

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

DESCRIPTION

FEATURES

ETA4046 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 ETA4046 ideal for portable

applications. No external sense resistor or blocking

diode is necessary for the ETA4046. Build-in thermal

feedback mechanism regulates the charge current to

control the die temperature during high power operation

or at elevated ambient temperature. The ETA4046 has

a pre-charge function for trickle charging deeply

discharged batteries. 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 1/5th of the

programmed value. The ETA4046 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

2.9V trickle charge threshold

Charge current programmable, up to 1.2A

250nA BAT current when no charging

Soft-start limits in-rush current

ESOP8 / DFN2x2-8 / DFN2x3-8 / SOT23-6

APPLICATIONS



E-cigarette

Toys

Bluetooth applications

Li-ion battery powered devices

ETA4046 is in an ESOP8, DFN2x2-8, DFN2x3-8, and

SOT23-6 package.

TYPICAL APPLICATION

VIN

BAT

NTC

VBAT/ VSYS

1uF

4.7uF

Li⁺

Battery

STAT

ETA4046

STDBY

R_ISET

ISET

GND

STDBY , NTC and EN pins are not available on SOT23-6 package

www.etasolution.com

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