bq27541-G1

bq27541-G1 www.ti.com SLUSAL6B – NOVEMBER 2011 – REVISED JUNE 2012 Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration : bq27541-G1 FEATURES 1 23 Battery Fuel Gauge for 1-Series (1sXp) Li-Ion Applications up to 32Ahr capacity Microcontroller Peripheral Provides: – Accurate Battery Fuel Gauging supports up to 32Ahr – Internal or External Temperature Sensor for Battery Temperature Reporting – SHA-1/HMAC Authentication – Lifetime Data Logging – 64 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) Advanced Fuel Gauging Features – Internal Short Detection – Tab Disconnection Detection HDQ and I2C™ Interface Formats for Communication With Host System Small 12-pin 2.5 mm × 4 mm SON Package APPLICATIONS Smartphones Tablets Digital Still and Video Cameras Handheld Terminals MP3 or Multimedia Players DESCRIPTION The Texas Instruments bq27541-G1 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-G1 resides within the battery pack or on the system’s main-board with an embedded battery (nonremo...