The ISL21440 is a micropower, FGATM reference and comparator on a single chip. Drawing less than 1.8A supply current over the full operating temperature range, the ISL21440 operates from a single 2V to 11V supply and can also be used with split bipolar supplies. The ISL21440's on-board reference provides a 1.182V 0.5% output. It features programmable hysteresis and TTL/CMOS compatible outputs that sink and source current. Low Bias currents permit high value divider resistors for typical circuit current drains of <2.5A. The low supply current makes the ISL21440 ideal for battery powered devices in battery level or low voltage monitors circuits.