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BQ27425YZFR-G2A

TIBQ27425YZFR-G2A

Texas Instruments
Battery Battery Monitor IC Lithium Ion 15-DSBGA
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Overview

The BQ27425YZFR-G2A is a single-cell Li-Ion battery fuel gauge that uses TI proprietary Impedance Track technology to provide accurate state-of-charge monitoring. It operates over a temperature range of -40 to 85 degrees Celsius and communicates via an I2C interface, requiring minimal microcontroller overhead for battery management.

Why Choose This Part

This IC features ultra-low power consumption with a typical normal mode current of 0.118mA and a deep shutdown mode of 1uA, maximizing shelf life. Its integrated 256 bytes of EEPROM and 15-DSBGA package make it an exceptionally compact solution for space-constrained mobile electronics.

Applications

Smartphones and Tablets
Provides high-accuracy battery capacity monitoring and remaining run-time predictions for portable consumer devices.
Handheld Terminals
Ensures reliable power tracking in industrial handhelds, even as battery impedance increases over time.
Digital Cameras
Manages high-drain lithium-ion cells in small form factors where accurate fuel gauging is critical for preventing unexpected shutdowns.

Key Specifications

Function Battery Monitor
Interface I2C
Mounting Type Surface Mount
Package / Case 15-UFBGA, DSBGA
Number of Cells 1
Battery Chemistry Lithium Ion
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 15-DSBGA

Getting Started

Engineers can evaluate this part using the BQ27425EVM evaluation module and TI's Battery Management Studio (bqStudio) software. Design integration requires an I2C connection and a low-value sense resistor to measure current, with configuration parameters stored in the on-chip memory.

Also Consider

BQ27441-G1 TITexas Instruments - An alternative system-side fuel gauge with an integrated sense resistor to simplify PCB layout and reduce component count.
MAX17048 Maxim Integrated / Analog Devices - A simpler fuel gauge option that uses the ModelGauge algorithm to eliminate the need for a current sense resistor.
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