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BQ27425YZFR-G2B

TIBQ27425YZFR-G2B

Texas Instruments
Battery Battery Monitor IC Lithium Ion 15-DSBGA
NRND765,000 in stock
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Overview

The BQ27425YZFR-G2B is a single-cell Li-Ion battery fuel gauge that uses patented Impedance Track technology to provide highly accurate remaining capacity and state-of-health data. It communicates over I2C and features integrated 256 bytes of EEPROM for non-volatile storage of battery parameters. The device is designed for space-constrained portable electronics, housed in a compact 15-pin DSBGA package.

Why Choose This Part

This IC minimizes the host processor overhead by performing complex battery modeling and remaining capacity calculations internally. Its extremely low current consumption, including a 23uA sleep mode, makes it ideal for power-sensitive IoT applications. The 15-DSBGA package footprint is small (1.75mm x 2.69mm), saving significant PCB area in compact designs.

Applications

Smartphones and Tablets
Provides precise battery level reporting and runtime estimation for high-drain consumer handhelds.
Wearable Medical Devices
Utilizes ultra-low power modes like Hibernate (8uA) and Shutdown (1uA) to extend battery life in intermittent-use devices.
Handheld Industrial Scanners
Monitors battery health and provides capacity data over extended operating temperatures from -40C to 85C.

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

Integration requires an I2C host connection to the SDA and SCL pins and a 2.75V VDD supply. Engineers should utilize the BQ27425EVM evaluation module along with Texas Instruments Battery Management Studio (bqStudio) software to configure the 256-byte EEPROM settings. Development is simplified by the Impedance Track algorithm which reduces the need for extensive battery characterization cycles.

Also Consider

BQ27421-G1 TITexas Instruments - A similar system-side fuel gauge that is easier to configure for standard battery chemistries without extensive EEPROM programming.
MAX17048 Analog Devices / Maxim Integrated - Uses the ModelGauge algorithm which eliminates the need for a sense resistor, further reducing component count.