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ETA4257 - 1.2A/40V Fully Integrated Linear Charger

Description

ETA4257 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 ETA4257 ideal for portable applications.

Features

  • 40V input standoff voltage.
  • 4.2V charge termination voltage.
  • 2.6V trickle charge threshold.
  • Charge current programmable, up to 1.2A.
  • 400nA BAT current when no charging.
  • Soft-start limits in-rush current.
  • Fault and Charge Status Indicator.
  • DFN3x3-10.

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Datasheet preview – ETA4257

Datasheet Details

Part number ETA4257
Manufacturer ETA
File Size 632.79 KB
Description 1.2A/40V Fully Integrated Linear Charger
Datasheet download datasheet ETA4257 Datasheet
Additional preview pages of the ETA4257 datasheet.

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Full PDF Text Transcription

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ETA4257 1.2A/40V Fully Integrated Linear Charger for 1 Cell Li-ion Battery DESCRIPTION ETA4257 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 ETA4257 ideal for portable applications. No external sense resistor or blocking diode is necessary for the ETA4257. Build-in thermal feedback mechanism regulates the charge current to control the die temperature during high power operation or at elevated ambient temperature. The ETA4257 has a pre-charge function for trickle charging deeply discharged batteries. The fast charge current can be programmed by an external resistor.
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