bq27742-G1
Overview
The Texas Instruments bq27742-G1 is a fuel gauge for single-cell Li-Ion battery packs that uses patented Impedance Track™ technology to deliver rate-, temperature-, and aging-compensated predictions of remaining battery capacity and system runtime with highest accuracy. The device also includes a fully integrated high-side protector that eliminates the need for a separate Li-Ion protection circuit and provides a full suite of high-accuracy fault detections for overvoltage, undervoltage, overcurrent in charge, overcurrent in discharge, and short-circuit in discharge conditions.
- 1 Battery Fuel Gauge and Protector for Single-Cell Li-Ion Applications
- Microcontroller Peripheral Provides: - Precision 16-Bit, High-Side Coulomb Counter with Low-Value Sense Resistor (5 mΩ to 20 mΩ) - External and Internal Temperature Sensors for Battery Temperature Reporting - Lifetime and Current Data Logging - 64 Bytes of Non-Volatile Scratch Pad Flash - SHA-1 Authentication Capability
- Battery Fuel Gauging Based on Patented Impedance Track™ Technology - Models Battery Discharge Curve for Accurate Time-To-Empty Predictions - Automatically Adjusts for Aging, SelfDischarge, and Temperature- and RateInduced Effects on Battery
- Integrated High-side NMOS Protection FET Drive
- Hardware-based Safety and Protection: - Overvoltage (OVP) - Undervoltage (UVP) - Overcurrent in Charge (OCC) - Overcurrent in Discharge (OCD) - Short-Circuit in Discharge (SCD)
- I2C and HDQ Interface Formats for Communication with Host System
- Ultra-Compact, 15-Ball NanoFree™ DSBGA
