On March 10, 2014, Micrel Korea (CEO Oh Young-jun, www.micrel.com), an industry leader in high-performance linear and power solutions as well as LAN, timing and communications solutions, announced that it is supplying voltage supervisor ICs ideal for high-precision core voltage monitoring. The MIC2790/1/3 is an ideal product for high-precision core voltage monitoring that must respond quickly when fault conditions occur.

This voltage supervisor IC features manual reset input and enable input (MIC2793 only), capacitor-programmable reset timeout delay, and both active-low and active-high reset outputs. The MIC2790/1/3 monitors system voltages ranging from 0.4V to 5.5V, with average sensing accuracy of 0.5% at +25°C and ±1.0% over -40°C to +125°C.

The IC performs output reset when the sensed voltage drops below the threshold or the manual reset goes to logic low. The active-low reset goes low for the duration of the reset timeout delay when the sensed voltage returns to normal or the manual reset transitions to logic high. The reset timeout delay period is programmable from 1ms to 10s using an external capacitor.

The MIC2790/1/3 operates from a low supply voltage of 1.5V to 5.5V and supports an operating temperature range of -40°C to +125°C. Primary target applications include communications and computers, servers, medical equipment, portable devices, set-top boxes, and various applications for microprocessor monitoring.