Microchip MIC2774N-31YM5-TR: Precision Voltage Supervision with Manual Reset Control

In the realm of electronic systems, ensuring reliable operation and preventing unpredictable behavior during power-up, power-down, or brownout conditions is paramount. The Microchip MIC2774N-31YM5-TR stands as a critical component designed to address these exact challenges. This high-precision voltage supervisor, or reset IC, provides robust circuit protection by continuously monitoring a system's power supply voltage and asserting a reset signal when it falls below a predefined threshold.

The core function of this device is its voltage monitoring capability. The "31" in its part number denotes a fixed factory-set threshold voltage of 3.1V, making it an ideal choice for monitoring 3.3V power supplies commonly found in modern digital logic, microcontrollers, FPGAs, and ASICs. When the VDD supply voltage drops below this 3.1V threshold, the chip's open-drain reset output (RESET) is assertedly driven active, preventing the downstream system from operating with insufficient voltage, which could lead to data corruption or faulty execution.

A key distinguishing feature of the MIC2774N is its integrated manual reset input (MR). This active-low pin allows an external button or a digital signal from another part of the system to force a reset cycle on demand. This is invaluable for system debugging, user-initiated reboots, or ensuring a known start-up state without cycling the main power. The manual reset function provides designers with greater flexibility and control over system management.

Housed in a compact 5-pin SOT-23-5 package, the device is optimized for space-constrained applications. Its extremely low supply current makes it suitable for battery-powered and portable devices. Furthermore, the MIC2774N is characterized for operation over the industrial temperature range (-40°C to +85°C), ensuring performance and reliability in harsh environments.

ICGOOODFIND Summary: The Microchip MIC2774N-31YM5-TR is an exceptionally reliable and compact voltage supervisor. It effectively safeguards 3.3V systems by providing automatic reset generation during power faults and offers the added flexibility of a manual reset capability, making it a versatile and essential component for enhancing system stability and reliability.

Keywords: Voltage Supervisor, Manual Reset, Power Management, System Monitoring, Reset IC.