NE57600GD datasheet(2/12 Pages) PHILIPS

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Philips Semiconductors

Product data

NE57600

One-cell Lithium-ion battery protection with

over/undercharge and overcurrent protection

2001 Oct 03

853-2294 27198

GENERAL DESCRIPTION

The NE57600 series is a family of small, high-precision lithium-ion

battery protection devices that provide protection against the

damaging effects of overcharging, overdischarging, short circuit, and

excessive current consumption such as happens if the consumer

uses the battery for an apparatus it was not meant to power. The

NE57600 is a single-cell Li-ion protection IC.

The NE57600 over and under voltage accuracy is trimmed to within

±25 mV (5%) and is available to match the requirements of all

lithium-ion cells manufactured in the market today.

FEATURES

• Trimmed overvoltage trip point to within ±25 mV

• Programmable overvoltage trip time delay

• Trimmed undervoltage trip point to within ±25 mV

• Very Low undervoltage sleep quiescent current 0.05 mA

• Discharge overcurrent cutoff

• Low operating current (10 mA)

• Very small SOT-26A package

APPLICATIONS

• Protecting one-cell Li-ion battery packs for mobile phones or

palmtop devices

SIMPLIFIED SYSTEM DIAGRAM

SL01548

GND

V+

V–

NE57600

DISCHARGE

FET

CHARGE

FET

CDLY

VCC

Li-ION CELL

CHARGER

LOADER

–

Figure 1.

Simplified system diagram.

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