AAT3680 Datasheet | Advanced Analogic Technologies

Lithium-Ion Linear Battery Charge Controller General Description The AAT3680 Battery Manager™ is a member of Analogic Tech's Total Power Management IC™ family. This device is an advanced Lithium-Ion (Li Ion) battery charge and management IC, specifically designed for low cost pact portable applications. In a single 8-pin package, the AAT3680 precisely regulates battery charge voltage and charge current. This device is capable of two trickle charge current levels controlled by one external pin. Battery charge temperature and charge state are carefully monitored for fault conditions. In the event of an over current, short circuit or over temperature failure, the device will automatically shut down, thus protecting the charging device and the battery under charge. A battery charge state monitor output pin is provided to indicate the battery charge status though a display LED. The battery charge status output is a serial interface which may also be read by a system microcontroller. The AAT3680 is available in an 8-pin MSOP or 12pin TSOPJW package, specified over -20 to 70°C range. Features - - - - - - - - - - - - - - Battery Manager™ 4.5V to 15V Input voltage range 1% Accurate Preset Voltages: 4.1V, 4.2V, 8.2V, 8.4V Low operation current, typically 0.5m A Programmable Charge Current Automatic recharge sequencing Battery temperature monitoring Deep discharge cell conditioning Fast trickle charge option with thermal over-ride Full battery charge auto turn off / sleep mode Over voltage, current and temperature protection Power on reset LED Charge Status Output or System Microcontroller serial interface Temperature range -20 to 70°C 8 pin MSOP, 12 pin TSOPJW package Preliminary Information Applications - - - - Cellular Phones Personal Digital Assistants (PDA's) Desktop Chargers USB Chargers Typical Application RSENSE 0.2Ω Q1 FZT788B BATT+ C2 10µF R1 2.5k DRV T2X VP CSI BAT BATT- VP TS RT1 TEMP VSS C1 4.7µF D1 RT2 STAT Battery Pack R2...