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SS4003 Datasheet(PDF) 1 Page - Silicon Standard Corp.

Part No. SS4003
Description  Smart Battery Power Management
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Maker  SSC [Silicon Standard Corp.]
Homepage  http://www.siliconstandard.com
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SS4003 Datasheet(HTML) 1 Page - Silicon Standard Corp.

 
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SS4003
2/01/2005 Rev.1.01
Smart Battery Power Management
FEATURES
Single-chip battery charger controller and gas gauge.
Provides cell balance control output for charge control.
Drives 5-segment LED display for remaining capacity indication.
User-selectable charge-control data sets.
Output for charging indicator
Maximum voltage charge control for Individual cells.
Provides secondary cell protection functions.
APPLICATIONS
Portable DVD Player and Computers.
2-Cell Battery Packs or Backup Devices.
PACKAGE OUTLINE
24 Pin SOP or SSOP package.
GENERAL DESCRIPTION
The SS4003 Charger and Gas Gauge combo IC for battery pack or in-system installation provides an
accurate charge control and maintains an accurate record of available charge in rechargeable batteries.
The SS4003 is dedicated for Li-Ion chemistries, and monitors capacity and other critical parameters.
The SS4003 uses an A-to-D converter for voltage and current measurement. The cumulative
charge into (or discharge from) the battery is continuously calculated. The on-chip ADC also monitors
individual cell voltage in the battery pack and allows the SS4003 to generate charge control signals
to charge the pack safely. The SS4003 provides outputs to drive LEDs to depict remaining battery
capacity from full to empty with a 5-segment display. The SS4003 uses the pre-defined self-discharge
rate and other compensation factors stored in the ROM to accurately adjust remaining capacity for use
and standby conditions based on time. The SS4003 also automatically calibrates or learns the true
battery capacity in the course of a discharge cycle from near full to near empty level.


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