BQ27743数据手册TI中文资料规格书

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
• Microcontroller PeripheralProvides:
• Precision 16-Bit, High-Side Coulomb Counter with Low-Value SenseResistor (5 mΩ to 20 mΩ)
• External and Internal Temperature Sensors forBattery Temperature Reporting
• Lifetime and Current Data Logging
• 64 Bytes of Non-Volatile Scratch Pad Flash
• SHA-1Authentication Capability

• Battery Fuel Gauging Based on Patented ImpedanceTrack™ Technology
• Models Battery Discharge Curve for Accurate Time-To-EmptyPredictions
• Automatically Adjusts for Aging, Self-Discharge, and Temperature- andRate-Induced Effects on Battery
• Integrated High-side NMOS Protection FET Drive
• Hardware-basedSafety 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 Communicationwith Host System

• Ultra-Compact, 15-Ball NanoFree™ DSBGA
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