bq27541-V200

bq27541-V200 www.ti.com SLUSA11 – FEBRUARY 2010 Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration Check for Samples: bq27541-V200 FEATURES 1 23 Battery Fuel Gauge for 1-Series Li-Ion Applications Microcontroller Peripheral Provides: – Accurate Battery Fuel Gauging – Internal Temperature Sensor for System Temperature Reporting – SHA-1/HMAC Authentication – Lifetime Data Logging – 96 Bytes of Non-Volatile Scratch Pad FLASH Battery Fuel Gauging Based on Patented Impedance Track™ Technology – Models Battery Discharge Curve for Accurate Time-To-Empty Predictions – Automatically Adjusts for Battery Aging, Battery Self-Discharge, and Temperature/Rate Inefficiencies – Low-Value Sense Resistor (5mΩ to 20mΩ) HDQ and I2C™ Interface Formats for Communication With Host System Small 12-pin 2,5 mm × 4 mm SON Package APPLICATIONS Smartphones PDAs Digital Still and Video Cameras Handheld Terminals MP3 or Multimedia Players DESCRIPTION The Texas Instruments bq27541 Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system microcontroller firmware development for accurate battery fuel gauging. The bq27541 resides within the battery pack or on the system’s main-board with an embedded battery (nonremovable). The bq27541 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-cha...