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LP4054 - 500mA Standalone Linear Li-Ion Battery Charger

Description

The LP4054 is a complete constant-current/constant- voltage linear charger for single cell lithium -ion batteries.

Its SOT23-5 package and low external component count make the LP4054 ideally suited for portable applications.

Features

  • include charge current monitor, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage. Order Information LP4054.
  • F:Pb-Free Features.
  • Programmable Charge Current Up to 500mA.
  • No MOSFET, Sense Resistor or Blocking Diode Required.
  • Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize.
  • Charge Rate Without Risk of Overheating.
  • 4.2V Charge Voltage with ± 1% Accuracy.

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Datasheet preview – LP4054

Datasheet Details

Part number LP4054
Manufacturer Lowpowersemi
File Size 453.53 KB
Description 500mA Standalone Linear Li-Ion Battery Charger
Datasheet download datasheet LP4054 Datasheet
Additional preview pages of the LP4054 datasheet.

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Full PDF Text Transcription

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Preliminary Datasheet LP4054 500mA Standalone Linear Li-Ion Battery Charger General Description The LP4054 is a complete constant-current/constant- voltage linear charger for single cell lithium -ion batteries. Its SOT23-5 package and low external component count make the LP4054 ideally suited for portable applications. Furthermore, the LP4054 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.
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