SC802A中文资料完全集成的锂离子电池充电器系统定时器数据手册Semtech规格书

描述 Description

The SC802A is a fully integrated, single cell, constant-current/constant-voltage Lithium-IonLithium Polymer battery charger. With an integrated timer and complete charge control algorithm, the SC802 is well suited for stand-alone charger applications. The SC802A contains programmable pre-charge, fast-charge, and termination current settings.

特性 Features

·Fully integrated charger with FET pass transistor, reverse-blocking diode, sense resistor, timer, and thermal protection
·Complete voltage ranges of 4.1 V, 4.2 V & adjustable
·Programmable precharge, fastcharge & termination current
·Battery voltage controlled to 1% accuracy
·Soft-start for glitch-free adaptor plug-in
·Up to 1 A continuous charge current
·Charge current monitor output for microcontroller or ADC interface
·Input voltage range from 4.2 V to 14 V
·0.1 µA battery drain current in shutdown and monitor modes
·Operates without a battery in regulated LDO mode
·Small 4 mm x 4 mm 16-lead MLP package
·NTC thermistor sense input
·Adjustable 6-hour programmable charge timer
·Over current protection in all charging modes
·Over voltage protection
·Remote Kelvin sensing at the battery terminals
·ADC input control capable
·Status output communicates charging and end of charge cycle
·Charges Li-ion, Li-polymer, NiCd and NiMH Batteries

应用 Application

·Cellular phones
·PDAs
·Handheld meters
·Charging stations
·Handheld computers
·Digital cameras
·Programmable current source