Ensuring System Stability with the Microchip MIC811TLY-TR 3.3V Voltage Supervisor

In the realm of electronic design, maintaining system integrity during power-up, power-down, and brownout conditions is paramount. The Microchip MIC811TLY-TR addresses this critical need as a dedicated 3.3V voltage supervisor IC. Housed in a compact SOT-143 package and supplied on tape and reel for high-volume assembly, this device is engineered for reliability and efficiency in a wide array of applications.

The primary function of the MIC811TLY is to monitor a microprocessor’s (μP) power supply voltage. It features a precise factory-set 3.08V threshold, making it an ideal solution for systems operating at the common 3.3V nominal voltage. When the VCC supply voltage drops below this preset threshold, the device asserts a reset signal, preventing the μP from operating with insufficient voltage, which can lead to erratic behavior, data corruption, or system failure. This active-low reset output remains asserted until the VCC voltage rises above the threshold and the built-in 140ms minimum timeout period elapses, ensuring the power supply and processor oscillator have stabilized.

The choice of the SOT-143 package is a significant advantage for space-constrained designs commonly found in modern portable electronics, communication modules, and embedded systems. Its small footprint allows for high board density without compromising performance. Furthermore, the tape and reel packaging format is essential for automated pick-and-place equipment, streamlining the manufacturing process and ensuring consistent, rapid assembly for mass production.

Key applications for this supervisor IC include embedded controllers, networking equipment, automotive systems, and any battery-powered device where consistent and reliable operation is non-negotiable. Its robust design and low power consumption make it a versatile component for enhancing product reliability.

ICGOOFind: The Microchip MIC811TLY-TR is a robust and compact solution for power management supervision. Its precise monitoring of 3.3V rails, combined with a guaranteed reset timeout period and packaging optimized for mass production, makes it an excellent choice for designers seeking to improve system reliability and manufacturing efficiency.

Keywords: Voltage Supervisor, 3.3V, SOT-143, Tape and Reel, Reset IC.