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LTC2944 Battery Monitor IC

ADILTC2944 Battery Monitor IC

MPN: LTC2944IDD#PBF
Analog Devices Inc.
Battery Battery Monitor IC Multi-Chemistry 8-DFN (3x3)
NRND1,582 in stock

Overview

The LTC2944 is a multi-chemistry battery monitor IC from Analog Devices that measures key battery pack parameters over an I2C or SMBus interface. It is intended for embedded systems that need battery state monitoring and power-management telemetry in a compact surface-mount package.

Why Choose This Part

This part is a straightforward way to add battery monitoring without designing a discrete measurement front end. Its I2C/SMBus interface makes integration with common MCUs simple, and the small 3x3 mm DFN package is suitable for space-constrained products. It is also a good fit for systems that need battery telemetry rather than a full charger or power-path solution.

Applications

Battery pack fuel gauging
Monitor charge-related parameters in single-cell or multi-cell battery packs for runtime estimation and power management.
Portable devices
Add battery monitoring to handheld equipment, medical devices, and other battery-powered products.
Industrial backup power
Track battery status in UPS, backup modules, and serviceable battery subsystems.
Smart battery systems
Support system-level battery telemetry and reporting over I2C or SMBus.
Multi-chemistry designs
Use in designs that may need battery monitoring across different rechargeable chemistries.

Key Specifications

Function Battery Monitor
Interface I2C, SMBus
Mounting Type Surface Mount
Package / Case 8-WFDFN Exposed Pad
Battery Chemistry Multi-Chemistry
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-DFN (3x3)

Getting Started

Connect the LTC2944 to a microcontroller with an I2C or SMBus-capable peripheral, then follow the Analog Devices datasheet for register setup and measurement flow. For firmware development, any MCU IDE or toolchain that supports I2C and basic register access will work well; start by reading the battery monitor registers and validating bus communications before integrating higher-level fuel-gauge logic. A bench setup with a known battery source and controlled charging/discharging conditions is useful for calibration and verification.

LTC2944IDD Family

Part NumberDifferenceStock
LTC2944IDD#3ZZPBF (Analog Devices) 3ZZPBF 1,882

Also Consider

BQ27441 TITexas Instruments - A widely used battery fuel gauge option when you want a dedicated gauge IC with host interface integration.
MAX17048 ADIAnalog Devices Inc. - A compact fuel-gauge IC that is often considered for portable battery-powered designs.