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BQ27441DRZR

TIBQ27441DRZR

Texas Instruments
Functionally the same BQ27441 gauge in the standard qualification/package variant for non-AEC applications or alternate sourcing.
NRND9,591 in stock
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Overview

The BQ27441DRZR is a single-cell Li-Ion battery fuel gauge that utilizes TI patented Impedance Track technology to provide accurate state-of-charge and state-of-health data. It features an integrated LDO and supports a low-value 10 mOhm external sense resistor, allowing for a compact system-side implementation. The device communicates over I2C and is designed to minimize power consumption with a shutdown current of 0.6 uA.

Why Choose This Part

The system-side placement simplifies the battery pack design as it does not require an integrated gauge in the cell itself. Its Impedance Track algorithm automatically adjusts for battery aging and temperature changes without requiring a full discharge/charge cycle for recalibration.

Applications

Smartphones and Tablets
Provides precise remaining capacity and battery aging data for consumer mobile devices.
Wearable Devices
Utilizes ultra-low power modes (9 uA standby) to extend the operating life of fitness trackers and smartwatches.
Portable Medical Instruments
Ensures reliable battery monitoring for critical portable diagnostic tools and monitors.
Handheld Terminals
Supports both embedded and removable batteries in industrial handheld scanners and POS systems.

Key Specifications

Function Battery Monitor
Interface I2C
Mounting Type Surface Mount
Package / Case 12-VFDFN Exposed Pad
Number of Cells 1
Battery Chemistry Lithium Ion
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 12-SON (2.5x4)

Getting Started

Connect the BQ27441 to your microcontroller via the I2C interface and configure the design capacity and termination voltage in the gauge registers. TI provides the BQ27441EVM evaluation module which can be used with the EV2400 interface tool and Battery Management Studio (bqStudio) software for rapid prototyping and calibration.

Also Consider

BQ27421-G1 TITexas Instruments - Offers similar Impedance Track functionality in a smaller DSBGA chip-scale package for highly space-constrained designs.
MAX17048 Analog Devices / Maxim Integrated - A simpler fuel gauge that does not require an external sense resistor, though it may offer different accuracy profiles compared to Impedance Track.