BQ27541数据手册集成电路（IC）的电池管理规格书PDF

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
• 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 (5 m to 20 m)

• 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

Impedance Track is a trademark of Texas Instruments. I2C is a trademark of Phillips Corporation.