All trademarks are the property of their respective owners.
Description
The Texas Instruments bq27742-G1 is a fuel gauge for single-cell Li-Ion battery packsthat uses 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 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.
The DSBGA is a 15-ball package (2.78 mm × 1.96mm) that is ideal forspace-constrained applications.
Feature
Battery Fuel Gauge and Protector for Single-Cell Li-IonApplications
Microcontroller PeripheralProvides:
Precision 16-Bit, High-Side Coulomb Counter with Low-Value SenseResistor (5 m? to 20 m?)
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 HDQInterface Formats for Communication with HostSystem
Ultra-Compact, 15-Ball NanoFree? DSBGA
All trademarks are the property of their respective owners.
Description
The Texas Instruments bq27742-G1 is a fuel gauge for single-cell Li-Ion battery packsthat uses 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 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.
The DSBGA is a 15-ball package (2.78 mm × 1.96mm) that is ideal forspace-constrained applications.
(Picture: Diagram)
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
