BQ27541-V200数据手册TI中文资料规格书

描述 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-charge (%), run-time to empty (min.), battery voltage (mV), and temperature (°C).The bq27541 also features integrated support for secure battery pack authentication, using the SHA-1/HMAC authentication algorithm.

特性 Features

• 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