The Texas Instruments bq27531-G1 system-side Li- Ion Battery Management Unit is a microcontroller peripheral that provides Impedance Track fuel gauging and charging control for single-cell Li-Ion battery packs. The device requires little system microcontroller firmware development. Together with the bq2419x Single-Cell Switched-Mode Charger, the bq27531-G1 manages an embedded battery (nonremovable) or a removable battery pack.
●The bq27531-G1 uses the patented Impedance Track algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-ofcharge (%), run time to empty (minimum), battery voltage (mV), temperature (°C), and state of health (%).
●Battery fuel gauging with the bq27531-G1 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 15-pin package in the dimensions of 2.61 mm × 1.96 mm with a 0.5-mm lead pitch, which is ideal for spaceconstrained applications.
● Battery Fuel Gauge and Charger Controller for 1-
●Cell Li-Ion Applications
● Resides on System Main Board
● 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 (5 mΩ to 20 mΩ)
● Battery Charger Controller With Customizable
●Charge Profiles
● Configurable Charge Voltage and Current
●Based on Temperature
● Optional State of Health (SoH) and Multilevel-
●Based Charge Profiles
● Host-Free Autonomous Battery Management
●System
● Reduced Software Overhead Allows for Easy
●Portability Across Platforms and Shorter OEM
●Design Cycles
● Higher Safety and Security
● Intelligent Charging\x97Customized and Adaptive
●Charging Profiles
● Charger Control Based on SoH
● Temperature Level Charging (TLC)
● Battery Charger Controller for bq2419x Single-Cell
●Switched-Mode Battery Charger
● Stand-Alone Charging Solution
● SHIP Mode Capability
● 400-kHz I2C Interface for Connection to System
●Microcontroller Port
● In a 15-Pin NanoFree™ Packaging
