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NJW4120 - Lithium-Battery Charger Controller

Datasheet Summary

Description

PACKAGE OUTLINE NJW4120 is a 1-cell and 2-cell lithium ion battery charge control IC with a built-in AC-DC secondary side control feature.

Features

  • Charge Control Feedback by Photocoupler.
  • Adjustable Charge Voltage.
  • Adjustable Pre-Charge and Full Charge Current.
  • Temperature Monitor.
  • Over Charge Timer.
  • Internal Re-Charge function.
  • Delay timers and Hysteresis inputs for high noise immunity.
  • Over Discharge Battery Detect.
  • Over Voltage Protection.
  • Bi-CMOS Technology.
  • Package Outline NJW4120M : DMP20 NJW4120V : SSOP20.
  • PIN.

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Datasheet preview – NJW4120

Datasheet Details

Part number NJW4120
Manufacturer JRC
File Size 386.38 KB
Description Lithium-Battery Charger Controller
Datasheet download datasheet NJW4120 Datasheet
Additional preview pages of the NJW4120 datasheet.

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Full PDF Text Transcription

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NJW4120 www.DataSheet4U.com Lithium-ion Battery Charger Controller IC with Timer ■GENERAL DESCRIPTION ■PACKAGE OUTLINE NJW4120 is a 1-cell and 2-cell lithium ion battery charge control IC with a built-in AC-DC secondary side control feature. Using a photocoupler to directly feed back optimum charging voltage and current information to the primary side, it increases energy efficiency, makes possible a smaller charger, and conserves energy. Charging current can be freely set and therefore it is NJW4120M possible to optimize charging according to battery capacity. As safety features it has over voltage, over discharge, temperature detection, and a charge over timer. Also, the adaptor and the charge control circuit are mounted on one chip.
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