BQ27750DRZT

Battery Management Overview

The BQ27750DRZT is a single-cell lithium-ion battery gas gauge and protection solution from Texas Instruments. It utilizes the Impedance Track algorithm to provide accurate state-of-charge (SOC) monitoring for 1-series Li-Ion packs. The device integrates a high-precision analog-to-digital converter (ADC) for voltage, current, and temperature sensing. Key electrical parameters include an operating supply voltage range of 2.0 V to 6.0 V, a maximum charge/discharge current capability supported by external FETs, and an I2C-compatible interface for communication with host processors.

Battery Management Feature Summary

• Integrates Impedance Track fuel gauge algorithm for precise state-of-charge estimation
• Includes integrated protection circuitry for over-voltage, under-voltage, and over-current conditions
• Features a high-resolution ADC for accurate measurement of cell voltage, current, and temperature
• Provides an I2C-compatible serial interface for system communication

Battery Management Applications

• Portable electronic devices requiring accurate battery life estimation
• Single-cell lithium-ion battery pack management systems
• Medical equipment with strict power monitoring requirements
• Industrial handheld tools and instrumentation

Battery Management Procurement Notes

Verify the specific suffix DRZT corresponds to the TSSOP-16 package and tape-and-reel quantity as defined in the official datasheet. Confirm RoHS compliance status and ensure the ordering part number matches the exact revision required for your design. Cross-reference the manufacturer's latest documentation to validate pinout compatibility and recommended operating conditions before finalizing procurement.

Battery Management Selection Notes

Select this component when designing for single-cell Li-Ion applications requiring integrated fuel gauging and protection. Ensure the external field-effect transistors are rated for the expected load currents and that the PCB layout supports the precision analog measurements. Verify that the host microcontroller supports the I2C protocol and has sufficient memory to store the calibration data generated during the learning cycle.

Battery Management Part Context

The BQ27750 belongs to Texas Instruments' family of Impedance Track battery gas gauges. It is designed to replace discrete solutions combining separate fuel gauge and protection ICs. This integration reduces board space and simplifies the bill of materials for portable electronics. The device is part of a broader ecosystem including evaluation modules and software tools for configuration.

Battery Management Replacement Considerations

Compatible alternatives within the same product family include the BQ27510 and BQ27441. These parts offer similar functionality but may differ in package options, feature sets, or algorithm updates. Verify electrical specifications and pinout compatibility before substitution. Consult the manufacturer's selection guide for detailed comparisons between these models.