Micrel, Inc. Dual Voltage Supervisor IC MIC2774L-22BM5

The MIC2774L-22BM5 is a dual power supply supervisor designed for under-voltage monitoring and reset generation in a compact SOT-23-5 package. It features two independent under-voltage detectors: one with a fixed threshold and another that is user-adjustable, allowing for monitoring of voltages as low as 0.3V. The device provides a reset output that is asserted during power-on and whenever either monitored voltage falls below the set thresholds, remaining asserted for a minimum of 140ms after the voltages return to normal levels. The supervisor includes manual reset functionality via an external switch connected to the /MR input. It operates with a low supply current of 3.5µA and incorporates hysteresis to prevent false triggering from noise. The MIC2774L-22BM5 is suitable for a variety of applications, including monitoring processor voltages in embedded systems, telecommunications, and networking hardware. It is available with multiple factory-programmed voltage thresholds, making it versatile for different supply voltage requirements.