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BQ27425YZFT-G2A

TIBQ27425YZFT-G2A

Texas Instruments
Battery Battery Monitor IC Lithium Ion 15-DSBGA
Active3,697 in stock
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Overview

The BQ27425YZFT-G2A is a single-cell Li-Ion battery fuel gauge that utilizes Texas Instruments patented Impedance Track technology to provide accurate state-of-charge (SoC) data. It operates over a 2.45V to 2.75V VDD range and communicates via a standard I2C interface to simplify system integration. The device is packaged in a space-saving 15-pin DSBGA, making it suitable for compact mobile and handheld electronics.

Why Choose This Part

This gauge eliminates the need for an external sense resistor by utilizing internal resistance compensation, which reduces the total bill-of-materials and PCB area. Its Impedance Track algorithm provides high accuracy without requiring full discharge cycles for learning, adapting automatically to battery aging and temperature changes.

Applications

Handheld Medical Devices
Provides precise remaining capacity monitoring for portable diagnostic tools where battery reliability is critical.
Smartphones and Tablets
Integration into compact mobile devices to manage power delivery and display accurate battery percentages to users.
Portable Media Players
Manages single-cell Li-Ion packs in consumer electronics requiring high accuracy with minimal board footprint.
Wearable Electronics
Utilizes ultra-low power modes like Sleep (23uA) and Hibernate (8uA) to extend the shelf life of small-capacity batteries.

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

To evaluate this part, engineers typically use the BQ27425EVM evaluation module alongside the EV2400 interface adapter for PC communication. Configuration and calibration are performed using TI's Battery Management Studio (bqStudio) software, which allows for real-time monitoring of voltage, current, and SoC registers.

Also Consider

BQ27441-G1A TITexas Instruments - An alternative system-side fuel gauge with an integrated sense resistor in a small 12-pin SON package.
MAX17048 Maxim Integrated / Analog Devices - Uses the ModelGauge algorithm which requires no sense resistor and has very low operating current.
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