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LN2054 - Standalone Linear Li-Ion Battery Charger

General Description

The LN2054 is a complete constant-current /constant -voltage linear charger for single cell lithium-ion batteries.

Its ThinSOT package and low external component count make the LN2054 ideally suited for portable applications.

Key Features

  • r>.
  • Programmable Charge Current Up to 500mA No MOSFET, Sense Resistor or Blocking Diode Required Complete Linear Charger in ThinSOT Package for single Cell Lithium-Ion Batteries Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate.
  • SOT-89-5L 5 PROG PROG 4 VCC CHRG GND BAT 1 1 2 SOT-89-5L (Top View) 2 3 3 Rev.1.0.
  • April. 25, 2011 1 www. natlinear. com Free Datasheet http://www. nDatasheet. com LN2054.
  • Orderin.

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Datasheet Details

Part number LN2054
Manufacturer Natlinear
File Size 253.12 KB
Description Standalone Linear Li-Ion Battery Charger
Datasheet download datasheet LN2054 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LN2054 Standalone Linear Li-Ion Battery Charger with Thermal Regulation ■ General Description The LN2054 is a complete constant-current /constant -voltage linear charger for single cell lithium-ion batteries. Its ThinSOT package and low external component count make the LN2054 ideally suited for portable applications. Furthermore, the LN2054 is specifically designed to work within USB power specifications. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor.