Philips Semiconductors

Product data

SA57608

One-cell Lithium-ion battery protection with

over/undercharge and overcurrent protection

2

2003 Oct 29

GENERAL DESCRIPTION

The SA57608 is a single-cell Li-ion protection IC, and is an improved

version of the NE57600, with different pinout. Its over and under

voltage accuracies are trimmed to within

± 25 mV (5%) over the

entire battery pack operating temperature range. The SA57608 is

available in various over and undervoltage limits.

There is a discharge overcurrent protection circuit which can protect

the battery pack against an accidental short-circuit. The overcharge

trip point has a time delay which can be programmed externally. It is

packaged in a space-saving 6-lead small outline package and

requires two external N-channel MOSFETs and a minimum of

passive parts.

FEATURES

APPLICATIONS

SIMPLIFIED SYSTEM DIAGRAM

SL01568

1

6

3

4

5

2

VM

CF

GND

DF

V+

V–

SA57608

1 k

Ω

DISCHARGE

FET

CHARGE

FET

0.1

µF

0.01

µF

0.1

µF

100

Ω

Li-ION CELL

Figure 1.

Simplified system diagram.