The Texas Instruments bq27542-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 fuel gauge resides within the battery pack or on the main board of thesystem with an embedded battery (non-removable).
The fuel gauge uses the patented Impedance Trackalgorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (minimum), battery voltage (mV), and temperature (°C). It also provides detections for internal short or tab disconnection events.
The fuel gauge also features integrated support for secure battery pack authentication, using theSHA-1/HMAC authentication algorithm.
Feature
Battery Fuel Gauge for 1-Series (1sXp) Li-Ion Applications up to 14,500-mAh Capacity
Microcontroller Peripheral Provides:
Accurate Battery Fuel Gauging Supports up to 14,500 mAh
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 (5 mΩ to 20 mΩ)
Advanced Fuel Gauging
HDQ and I2C Interface Formats for Communication with Host System
Small 12-pin 2.50 mm × 4.00 mm SON Package
Complies with Battery Trip Point (BTP) Requirements
Description
The Texas Instruments bq27542-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 fuel gauge resides within the battery pack or on the main board of thesystem with an embedded battery (non-removable).
The fuel gauge uses the patented Impedance Trackalgorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (minimum), battery voltage (mV), and temperature (°C). It also provides detections for internal short or tab disconnection events.
The fuel gauge also features integrated support for secure battery pack authentication, using theSHA-1/HMAC authentication algorithm.
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
