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LP4054 - 600mA Standalone Linear Li-Ion Battery Charger

General Description

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

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

Key Features

  • include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage. Ordering Information LP4054.
  • F:PB-Free Package B5:SOT23-5 Features Programmable Charge Current Up to 800mA 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 Regulatio.

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Datasheet Details

Part number LP4054
Manufacturer Power
File Size 553.36 KB
Description 600mA Standalone Linear Li-Ion Battery Charger
Datasheet download datasheet LP4054 Datasheet

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Full PDF Text Transcription (Reference)

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Preliminary LP4054 600mA Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT General Description The LP4054 is a complete constant-current/constantvoltage linear charger for single cell lithium-ion batteries. Its ThinSOT 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.