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SS4003 Datasheet(PDF) 1 Page - Silicon Standard Corp. |
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SS4003 Datasheet(HTML) 1 Page - Silicon Standard Corp. |
1 / 10 page www.SiliconStandard.com 1 of 10 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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