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LM3621 Datasheet PDF - National ->Texas Instruments

Part NameDescriptionManufacturer
LM3621 Single Cell Lithium-Ion Battery Charger Controller National-Semiconductor
National ->Texas Instruments National-Semiconductor
Other PDF  no available.
LM3621 Datasheet PDF : PDF DOWNLOAD   
LM3621MX image

General Description
The LM3621 is a full function constant voltage, constant current (CVCC) lithium-ion (Li+) battery charger controller. It provides 1% regulation accuracy over the specified temperature range without requiring the use of external precision resistors. The IC controls five charge modes: conditioning, fast, top-off, monitor and maintenance. In addition, the LM3621 detects and flags defective batteries as well as over current and over voltage fault events. The architecture of the IC is based on high gain constant voltage and constant current control loops.
   
Features
■ Automatic end-of-charge control
■ Preset or user adjustable charge current regulation
■ LED drivers for charging status and fault indication
■ Battery self-discharge refresh (maintenance)
■ Overvoltage/overcurrent fault detection and protection
■ Defective battery pack detection
■ Charge current boost control for cellular phone
    applications
■ Charge interruption control input
   
Applications
■ Complete, full function, protected battery charger for
    coke or graphite anode, single cell Lithium-Ion battery
    packs
■ Linear voltage regulator controlled chargers
■ High efficiency switching regulator controlled chargers
■ Cost effective wall adapter chargers
   

 

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