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MAX17049 - 1-Cell/2-Cell Fuel Gauge

This page provides the datasheet information for the MAX17049, a member of the MAX17048 1-Cell/2-Cell Fuel Gauge family.

Description

The MAX17048/MAX17049 ICs are tiny, micropower current fuel gauges for lithium-ion (Li+) batteries in handheld and portable equipment.

The MAX17048 operates with a single lithium cell and the MAX17049 with two lithium cells in series.

Features

  • S MAX17048: 1 Cell, MAX17049: 2 Cells S Precision ±7.5m­V/Cell Voltage Measurement S ModelGauge Algorithm.
  • Provides Accurate State-of-Charge.
  • Compensates for Temperature/Load Variation.
  • Does Not Accumulate Errors, Unlike Coulomb Counters.
  • Eliminates Learning.
  • Eliminates Current-Sense Resistor S Ultra-Low Quiescent Current.
  • 4µA Hibernate, 23µA Active.
  • Fuel Gauges in Hibernate Mode.
  • Automatically Enters and Exits Hibernate Mode S Report.

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Full PDF Text Transcription

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EVALUATION KIT AVAILABLE MAX17048 / MAX17049 Micropower 1-Cell/2-Cell Li+ ModelGauge ICs General Description The MAX17048/MAX17049 ICs are tiny, micropower current fuel gauges for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17048 operates with a single lithium cell and the MAX17049 with two lithium cells in series. The ICs use the sophisticated Li+ battery-modeling algorithm ModelGaugeK to track the battery relative state-of-charge (SOC) continuously over widely varying charge and discharge conditions. The ModelGauge algorithm eliminates current-sense resistor and battery-learn cycles required in traditional fuel gauges. Temperature compensation is implemented using the system microcontroller.
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