1.3mm x 1.3mm, Low-Power Dual Comparator with Reference

Minimizes Board Space with the Industry's Smallest Dual Comparators

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The MAX44268 is an ultra-small and low-power dual comparator ideal for battery-powered applications such as cell phones, notebooks, and portable medical devices that have extremely aggressive board space and power constraints. The comparator is available in a miniature 1.3mm x 1.3mm, 9-bump WLP package, making it the industry’s smallest dual comparator.

The IC can be powered from supply rails as low as 1.8V and up to 5.5V. It also features a 1.236V ±1% reference and a 0.7µA typical supply current per comparator. It has a rail-to-rail input structure and a unique output stage that limits supply current surges while switching. This design also minimizes overall power consumption under dynamic conditions. The IC has open-drain outputs, making it suitable for mixed voltage systems. The IC also features internal filtering to provide high RF immunity. It operates over a -40°C to +85°C temperature.
MAX44268: Typical Application Circuit MAX44268: Typical Application Circuit Enlarge+

Key Features

  • Ultra-Low Power Consumption
    • 0.7µA per Comparator
  • Ultra-Small 1.3mm × 1.3mm WLP Package
  • Internal 1.236V ±1% Reference
  • Guaranteed Operation Down to VCC = 1.8V
  • Input Common-Mode Voltage Range Extends 200mV Beyond-the-Rails
  • 6V Tolerant Inputs Independent of Supply
  • Open-Drain Outputs
  • Internal Filters Enhance RF Immunity
  • Crowbar-Current-Free Switching
  • Internal Hysteresis for Clean Switching
  • No Output Phase Reversal for Overdriven Inputs


  • Battery-Operated Sensors
  • Notebooks
  • Portable Medical Mobile Accessories
  • Smartphones
  • Two-Cell Battery-Powered Devices
  • Ultra-Low-Power Systems
Part NumberComp-
Internal Ref. Accuracy
Prog. Hyst.VOS
Logic OutOper. Temp.
typminmaxmaxtypmaxSee Notes
MAX44268 21.2361141.85.51.15Yes0.155Open Drain-40 to +85
$0.65 @1k
See All Comparators + Reference (48)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

Product Reliability Reports: MAX44268.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX44268EWL+
  • MAX44268EWL+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >


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