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 (nonremovable).
●The bq27541-G1 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). It also provides detections for internal short or tab disconnection events.
●The bq27541-G1 also features integrated support for secure battery pack authentication, using the SHA-1/HMAC authentication algorithm.
● 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
