General Description
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 dynam ic 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.

FEATUREs
♦ Ultra-Low Power Consumption
   ◇ 0.7µA per Comparator
♦ Ultra-Small 1.3mm x 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

APPLICATIONs
   Smartphones
   Notebooks
   Two-Cell Battery-Powered Devices
   Battery-Operated Sensors
   Ultra-Low-Power Systems
   Portable Medical Mobile Accessories