View mic2776 datasheet:

MIC2776 Micrel MIC2776 Micro-Power Low Voltage Supervisor Final Information General Description Features The MIC2776 is a power supply supervisor which provides • User-adjustable input can monitor supplies as low as under-voltage monitoring and power-on reset generation in a 0.3V compact 5-pin SOT package. Features include an adjustable • ±1.5% threshold accuracy under-voltage detector, a delay-generator, a manual reset • Separate VDD input input, and a choice of active-high, active-low, or open-drain • Generates power-on reset pulse (140ms min.) active-low reset output. The user-adjustable monitoring input • Manual reset input is compared against a 300mV reference. This low reference • Choice of active-high, active-low or open-drain active- voltage allows monitoring voltages l