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MAX17048G+T

MAX17048G+T

Maxim Integrated
Low-power single-cell fuel gauge for small battery-powered devices where minimal quiescent current is critical.
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Overview

The MAX17048G+T is a compact, single-cell Li+ battery fuel gauge that utilizes Maxim's ModelGauge algorithm to estimate state-of-charge without the need for a sense resistor. It features an extremely low quiescent current of 23 microamps in active mode and 0.5 microamps in sleep mode, making it ideal for space-constrained, battery-powered electronics. The device communicates over a standard I2C interface and operates across a wide supply voltage range of 2.5V to 4.5V.

Why Choose This Part

The ModelGauge algorithm eliminates the need for current-sense resistors and battery relearn cycles, reducing both BoM cost and board footprint. Its industry-leading 0.5 microamp sleep current ensures that the fuel gauge itself does not significantly contribute to battery drain during inactive periods.

Applications

Wearable Electronics
Provides accurate battery percentage for fitness trackers and smartwatches where PCB space and power consumption are critical.
IoT Sensor Nodes
Enables long-term battery monitoring for remote wireless sensors that spend most of their life in deep-sleep states.
Portable Medical Devices
Delivers reliable state-of-charge reporting for small handheld diagnostic tools using single-cell Li-ion batteries.

Key Specifications

Function Battery Monitor
Interface I2C
Mounting Type Surface Mount
Package / Case 8-WFDFN Exposed Pad
Number of Cells 1
Battery Chemistry Lithium Ion
Operating Temperature -20degC ~ 70degC (TA)
Supplier Device Package 8-TDFN-EP (2x2)

Getting Started

Engineers can evaluate this IC using the MAX17048EVKIT, which provides a Windows-based GUI for monitoring battery parameters. For firmware development, the device is accessed via I2C at a 7-bit address of 0x36, requiring only the connection of the VDD, GND, and CELL pins to the battery pack.

Also Consider

BQ27421-G1 TITexas Instruments - An I2C fuel gauge with an integrated sense resistor, utilizing the Impedance Track algorithm for high-accuracy state-of-charge reporting.

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Categories

Consumer Electronics > Battery Management
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