BQ27546YZFT-G1

Battery Management Overview

The BQ27546YZFT-G1 is a single-cell lithium-ion battery fuel gauge from the BQ27546-G1 series, manufactured by Texas Instruments. It operates within a supply voltage range of 2.8 V to 4.5 V and provides an output voltage of 2.5 V with an output current capability of 16 mA. The device supports battery capacities up to 14500 mAh and maintains a quiescent operating current of 118 uA. Designed for pack-side integration, it utilizes a DSBGA-15 surface-mount package suitable for SMD/SMT installation. The component functions reliably across an extended temperature range from -40 C to +85 C.

Battery Management Feature Summary

• Implements Impedance Track algorithm for precise state-of-charge prediction
• Integrates on-chip sensing resistor for direct current measurement
• Includes programmable hardware alerts for system protection

Battery Management Applications

• Single-cell lithium-ion battery pack monitoring
• Portable electronic devices requiring accurate remaining runtime estimation
• Medical equipment with strict power management requirements

Battery Management Procurement Notes

Verify the specific suffix G1 to confirm compatibility with the latest firmware and feature set. Ensure the DSBGA-15 package dimensions align with the target PCB layout constraints. Confirm that the host system supports the required I2C communication protocol for data exchange. Validate that the operating temperature range meets the environmental specifications of the final application.

Battery Management Selection Notes

Select this component when high accuracy in capacity prediction is required for single-cell lithium-ion systems. The integrated Impedment Track technology reduces the need for external components compared to basic coulomb counters. Consider the low standby current for applications prioritizing battery longevity. Verify that the host processor can interface with the standard I2C commands defined in the technical reference manual.

Battery Management Part Context

This part belongs to the BQ2754x-G1 family of fuel gauges, which succeeded earlier generations like the BQ27545. The G1 series introduces enhanced algorithms and updated command sets for improved performance. It serves as a dedicated solution for managing single-cell batteries where size and accuracy are critical design factors.

Battery Management Replacement Considerations

The BQ27545YZFT-G1 is a related predecessor model. Review the bq27545-G1 to bq27546-G1 Change List document to identify functional differences and necessary software updates before substitution.