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DATA SHEET
bq27742-G1 Single-Cell Li-Ion Battery Fuel Gauge with Programmable Hardware Protection
1 Features
- 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, Self-Discharge, and Temperature- and Rate-Induced 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
2 Applications
- Smartphones
- Tablets
- Handheld Terminals
- MP3 and Multimedia Players
- Portable Gaming
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