BQ27743中文资料具有可编程硬件保护功能的单节锂离子电池电量检测计数据手册TI规格书

描述 Description

The Texas Instruments bq27743 is a fuel gauge for single-cell Li-Ion battery packs thatuses patented Impedance Track™ technology to deliver rate-,temperature-, and aging-compensated predictions of remaining battery capacity and system runtimewith highest accuracy. The device also includes a fully integrated high-side protector thateliminates the need for a separate Li-Ion protection circuit and provides a full suite ofhigh-accuracy fault detections for overvoltage, undervoltage, overcurrent in charge, overcurrent indischarge, and short-circuit in discharge conditions. The hardware protection functions offerbuilt-in data flash-based programmability, allowing simple reconfiguration of existing devices forvarying end equipment needs.
The DSBGA is a 15-ball package (YAH: 2.78 mm × 1.96 mm × 0.400 mm) that is ideal forspace-constrained applications.
The fuel gauge provides information such as remaining battery capacity (mAh),state-of-charge (%), runtime to empty (minutes), voltage (mV), current (mA), and temperature (°C),as well as recording vital parameters throughout the lifetime of the battery. The device alsosupports interrupts to the host to indicate detection of a variety of important battery conditionsto the system.

特性 Features

• Impedance Track™ Battery Fuel Gauge and Protectorfor Single-Cell Li-Ion Applications
• Precision 16-Bit, High-Side Coulomb Counter with Low-Value SenseResistor (5 mΩ to 20 mΩ)
• Lifetime and Current Data Logging
• SHA-1Authentication Capability
• Battery Fuel Gauging Based on Patented ImpedanceTrack™ Technology
• Models Battery Discharge Curve for Accurate Time-To-EmptyPredictions
• Integrated High-side NMOS Protection FET Drive
• Overvoltage (OVP)
• Overcurrent in Charge (OCC)
• Short-Circuit in Discharge (SCD)
• I2C and HDQ Interface Formats for Communicationwith Host System
• Ultra-Compact, 15-Ball NanoFree™ DSBGA
All trademarks are the property of their respective owners.