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LP28021 - 1.0A Single-chip Li-ion and Li-POL Charger

General Description

The LP28021/A is a complete constant-current/ constant voltage linear charger for single cell lithium-ion batteries.

Its TDFN-10 package and low external component count make the LP28021/A ideally suited for portable applications.

Key Features

  • include charge current monitor, under voltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage. Order Information LP28021.
  • BAT Voltage Default: 4.2V 43: 4.35V F: Pb-Free Package Type QV: TDFN-10 SP: ESOP8 Function Class Default：OCP Adjustable A：Enable Features.
  • Very Low Power Dissipation.
  • Input Voltage: 3.8V~36V.
  • Input OVP: 6.1V.
  • Protection of Reverse Conn.

📥 Download Datasheet

Datasheet Details

Part number LP28021
Manufacturer Lowpowersemi
File Size 779.08 KB
Description 1.0A Single-chip Li-ion and Li-POL Charger
Datasheet download datasheet LP28021 Datasheet

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Full PDF Text Transcription (Reference)

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Preliminary Datasheet LP28021 1.0A Single-chip Li-ion and Li-POL Charger with OVP Protection General Description The LP28021/A is a complete constant-current/ constant voltage linear charger for single cell lithium-ion batteries. Its TDFN-10 package and low external component count make the LP28021/A ideally suited for portable applications. 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/4.35V, and the charge current can be rammed externally with a single resistor(RIBAT).