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BQ27441-G1

TIBQ27441-G1

MPN: BQ27441DRZR-G1B
Texas Instruments
Battery Management System-Side Impdance Trck Bttry Fuel Gge A 595-BQ27441DRZT-G1B
NRND2,369 in stock
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Overview

The BQ27441-G1 is a compact, system-side fuel gauge for single-cell Li-Ion batteries that utilizes TI patented Impedance Track technology. It provides accurate battery capacity and state-of-charge (SOC) reporting while requiring minimal microcontroller overhead, as it resides on the system board rather than the battery pack.

Why Choose This Part

The device features an integrated LDO and supports low-value 10 mOhm external sense resistors to reduce power dissipation. Its Impedance Track technology automatically adjusts for battery aging, temperature changes, and self-discharge without requiring a full discharge cycle for calibration.

Applications

Wearable Devices
Ideal for smartwatches and fitness trackers due to its small 2.5x4mm footprint and ultra-low power consumption.
Handheld Medical Instruments
Provides critical state-of-health and state-of-charge data for portable diagnostic tools.
Portable Consumer Electronics
Supports both embedded and removable battery configurations in smartphones and portable gaming devices.
IoT Sensors
Optimizes battery life in remote sensors by utilizing low-power modes like Hibernate which draws only 0.6 uA.

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

To evaluate the fuel gauge, use the BQ27441EVM evaluation module and connect it to a PC using the EV2400 interface adapter. Configure the gauge parameters such as Design Capacity and Termination Voltage over the 400-kHz I2C interface using the Battery Management Studio (bqStudio) software.

Also Consider

BQ27421-G1 TITexas Instruments - A similar single-cell gauge in a smaller DSBGA chip-scale package for extreme space-constrained designs.
MAX17048 Analog Devices / Maxim Integrated - A popular ModelGauge alternative that does not require a sense resistor, saving board space and BOM cost.

Categories

Consumer Electronics > Battery Management
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