Datasheet > ETA4085

ETA4085

更新时间： 2024-11-10 17:01:51

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
9页	456K
描述
1A Linear 4.2V Charger

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ETA4085 数据手册

ETA4085

30V Input Standoff, 1A Fully Integrated Linear Charger

for 1 Cell Li-ion Battery

DESCRIPTION

FEATURES

ETA4085 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



2.95V Trickle Charge Threshold

requirement makes the ETA4085 ideal for portable  Input Over Voltage Protection

applications. No external sense resistor or blocking diode  Charge Current Programmable, up to 1A

is necessary for the ETA4085. Build-in thermal feedback  400nA BAT Current when No Charging

mechanism regulates the charge current to control the die  Charge Conditioning with Safety Timer

temperature during high power operation or at elevated  Status Output for LED

ambient temperature. ETA4085 has the function of pre-  Soft-start Limits in-rush Current

charge, which can charge the deeply discharged batteries  DFN3x3-10L Package

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. ETA4085 keeps monitoring



RoHS Compliant

APPLICATIONS



E-cigarette

the battery voltage and enables a new charge cycle once  Toys

the voltage drops 100mV below the CV value.

ETA4085 is in a DFN3x3-10L package.



Bluetooth Applications

Li-ion Battery Powered Devices

TYPICAL APPLICATION

Li-ion or Li-Pol

Battery Pack

INPUT POWER

Pack+

OUT

BAT

TMR

2.2uF

TMR

STAT1

4.7uF

55.55K

Pack-

1.5K

ETA4085

STAT2

Vss

RISET

1.13K

Charge Enable

And Power Good

ISET

PART No.

PACKAGE

TOP MARK

ETA4085

Pcs/Reel

ORDERING INFORMATION

ETA4085D3K

DFN3x3-10

5000

YWW2L

www.etasolution.com

Empower, Transcend, Achieve!

12 3 4 5 6 7...9

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