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LM3658 - Dual Source USB/AC Li Chemistry Charger

Datasheet Summary

Description

The LM3658 is a single chip charger IC designed for handheld applications.

It can safely charge and maintain a single cell Li-Ion/Polymer battery operating from an AC wall adapter or USB power source.

Input power source selection of USB/AC is automatic.

Features

  • n Integrated power FETs with thermal regulation n Charges from either an AC wall adapter or USB power source with automatic source selection n 50 mA to 1000 mA charge currents using AC wall adapter n Pin-selectable USB charge currents of 100 mA or 500 mA n Continuous battery temperature monitoring n Built-in multiple safety timers n Charge status indication n Continuous over-current and temperature protection n Near-depleted battery pre-conditioning n Sleep mode with ultra low quiescent current.

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Datasheet preview – LM3658

Datasheet Details

Part number LM3658
Manufacturer National Semiconductor
File Size 705.44 KB
Description Dual Source USB/AC Li Chemistry Charger
Datasheet download datasheet LM3658 Datasheet
Additional preview pages of the LM3658 datasheet.

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www.DataSheet4U.com LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications May 2005 LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications General Description The LM3658 is a single chip charger IC designed for handheld applications. It can safely charge and maintain a single cell Li-Ion/Polymer battery operating from an AC wall adapter or USB power source. Input power source selection of USB/AC is automatic. With both power sources present, the AC power source has priority. Charge current is programmed through an external resistor when operating from an AC wall adapter allowing charge currents from 50 mA to 1000 mA. When the battery is charged using USB power, charge currents of 100 mA or 500 mA are pin-selectable.
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