Overview

Features and Benefits

  • Supports Use of Small Current-Sense Resistors to Improve Power-Supply Conversion Efficiency and Measurement Accuracy
    • Input Bias Current of 80nA (max)
    • Very Low 2µV Input Offset Voltage (MAX44284F/H)
    • Extremely Low 50nV/°C Input Offset Tempco Coefficient
    • -0.1V to +36V Wide Input Common-Mode Range
    • Low 0.05% Gain Error
  • Extends Battery Life
    • Low Supply Current of 21µA
    • 1.7V to 5.5V Single Supply
    • Shutdown Input (Independent of VDD)
  • Four Fixed Gain Options Simplify Design
    • 50V/V – MAX44284F
    • 100V/V – MAX44284H
    • 200V/V – MAX44284W
    • 500V/V – MAX44284E

Product Details

The MAX44284 is a high-side, current-sense amplifier that operates with a 1.7V to 5.5V single supply and is optimized for very low power operation with only 21µA of quiescent current.

The MAX44284 offers precision accuracy specifications of 2µV VOS and gain error of 0.05%. The device features an input common-mode voltage range from -0.1V to +36V. This current-sense amplifier has a voltage output and is offered in four different gain versions.

The MAX44284 is offered in small 6-bump, 0.4mm-pitch WLP (1.3mm x 0.9mm) and 6-pin SOT23 packages and is specified for operation over the -40°C to +125°C automotive temperature range.

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Applications

  • Base-Stations
  • DC-DC Current Sensing in Power Management
  • Medical Pulse Oximeters and Infusion Pumps
  • Notebook Computers
  • Portable-/Battery-Powered Systems
  • Smartphones and Tablets

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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PCN-PDN Information

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