Micrel MIC2774N-22YM5

多压监控器2.25V，可调2

Overview

The MIC2774N-22YM5 is a dual power supply supervisor that provides under-voltage monitoring, manual reset capability, and power-on reset generation in a compact 5-pin SOT package.Features include two under-voltage detectors, one fixed and one adjustable, and a choice of reset outputs. One undervoltage detector compares VDD against a fixed threshold. Ten factory-programmed thresholds are available. The second, user-adjustable input is compared against a 300mV reference.This low reference voltage allows monitoring voltages lower than those supported by previous supervisor ICs.The reset outputs are asserted at power-on and any time either voltage drops below the programmed threshold voltages and remains asserted for 140ms (min.) after they subsequently rise back above the threshold boundaries.Manual reset functionality can be provided by a switch connected between ground and the /MR input. A wide choice of voltage thresholds provides for a variety of supply voltages and tolerances. Hysteresis is included to prevent chattering due to noise. Typical supply current is a low 3.5µA.

Features

Bulk Package
2.25V, Adj Voltage - Threshold
Open Drain or Open Collector Output
Active Low Reset
140ms Minimum Reset Timeout
Surface Mount Mounting Type
2 Number of Voltages Monitored