Datasheet > ETA40543

ETA40543

更新时间： 2024-09-18 17:02:03

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
7页	617K
描述
1.2A Linear 4.35V Charger

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ETA40543 数据手册

ETA40543

1.2A/16V Fully Integrated Linear Charger for 1 Cell 4.35V Li-ion Battery

DESCRIPTION

FEATURES

ETA40543 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 ETA40543 ideal for portable applications. No

external sense resistor or blocking diode is necessary for the

ETA40543. Build-in thermal feedback mechanism regulates the

charge current to control the die temperature during high power

operation or at elevated ambient temperature. The ETA40543

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 1/10th of the programmed

value. The ETA40543 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

4.35V 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 and SOT23-6 package

APPLICATIONS



E-cigarette

Toys

Bluetooth applications

Li-ion battery powered devices

ETA40543 is in an ESOP8 and SOT23-6 package.

TYPICAL APPLICATION

VIN

BAT

NTC

VBAT/ VSYS

1uF

4.7uF

Li⁺

Battery

STAT

ETA40543

STDBY

R_ISET

ISET

GND

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

PART No.

PACKAGE

TOP MARK

ETA40543

YWW2L

Pcs/Reel

ORDERINGINFORMATION

ETA40543E8A

ESOP8

4000

3000

ETA40543S2G

SOT23-6

E6YW

www.etasolution.com

Powering Minds of the Smart

12 3 4 5 6 7

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