SC70, 1.6V, Nanopower, Beyond-the-Rails Comparators With/Without Reference

The MAX9117–MAX9120 nanopower comparators in space-saving SC70 packages feature Beyond-the-Rails™ inputs and are guaranteed to operate down to +1.6V. The MAX9117/MAX9118 feature an on-board 1.252V ±1.75% reference and draw an ultra-low supply current of only 600nA, while the MAX9119/MAX9120 (without reference) require just 350nA of supply current. These features make the MAX9117–MAX9120 family of comparators ideal for all 2-cell battery-monitoring/management applications.

The unique design of the output stage limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. This design also minimizes overall power consumption under dynamic conditions. The MAX9117/MAX9119 have a push-pull output stage that sinks and sources current. Large internal-output drivers allow rail-to-rail output swing with loads up to 5mA. The MAX9118/MAX9120 have an open-drain output stage that makes them suitable for mixed-voltage system design. All devices are available in the ultra-small 5-pin SC70 package.

Applications

* 2-Cell Battery Monitoring/Management * Medical Instruments * Mobile Communications * Notebooks and PDAs * Sensing at Ground or Supply Line * Telemetry and Remote Systems * Threshold Detectors/Discriminators * Ultra-Low-Power Systems

* Space-Saving SC70 Package (Half the Size of SOT23)

* Ultra-Low Supply Current

* 350nA Per Comparator (MAX9119/MAX9120)

* 600nA Per Comparator with Reference (MAX9117/MAX9118)

* Guaranteed to Operate Down to +1.6V

* Internal 1.252V ±1.75% Reference (MAX9117/MAX9118)

* Input Voltage Range Extends 200mV Beyond-the-Rails

* CMOS Push-Pull Output with ±5mA Drive Capability (MAX9117/MAX9119)

* Open-Drain Output Versions Available (MAX9118/MAX9120)

* Crowbar-Current-Free Switching

* Internal Hysteresis for Clean Switching

* No Phase Reversal for Overdriven Inputs