BQ27505-J4数据手册TI中文资料规格书

描述 Description

The Texas Instruments bq27505-J4 system-side 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 micro-controller firmware development. The bq27505-J4 resides on the system’s main board and manages an embedded battery (nonremovable) or a removable battery pack. The bq27505-J4 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), temperature (°C) and state of health(%).Battery fuel gauging with the bq27505-J4 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 12-ball package in the dimensions of 2.43mm × 1.96mm with 0.5mm lead pitch. It is ideal for space constrained applications.

特性 Features

• Battery Fuel Gauge for 1-Series Li-Ion Applications
• Resides on System Main Board
• Works With Embedded or Removable Battery Packs

• Microcontroller Peripheral Provides:
• Accurate Battery Fuel Gauging
• Internal Temperature Sensor for Battery Temperature Reporting
• Battery Low Interrupt Warning
• Battery Insertion Indicator
• Configurable Level of State of Charge (SOC) Interrupts
• State of Health Indicator
• 96 Bytes of Non-Volatile Scratch-Pad FLASH

• Battery Fuel Gauge Based on Patented Impedance Track Technology
• Models the 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 (10 m or Less)

• 400-kHz I2C Interface for Connection to System Microcontroller Port
• In a 12-Pin NanoFree (CSP) Packaging
• APPLICATIONS
• Smartphones and PDAs
• Digital Still and Video Cameras
• Handheld Terminals
• MP3 or Multimedia Players