Microchip MCP130T Voltage Supervisor, 3.15V Threshold, SOT-23-3

The Microchip MCP130T-315I/TT is a precision voltage supervisor circuit designed to ensure the reliable operation of microcontrollers and digital systems. This device actively monitors the supply voltage (VDD) and holds a microcontroller in a secure reset state until the power rail has stabilised at a safe operating level. It provides crucial protection against brown-out conditions, where a dip in supply voltage could cause erratic behaviour or data corruption, by asserting a reset signal whenever VDD falls below its preset threshold.

Featuring an active-low, open-drain reset output, this supervisor is highly versatile for integration into various logic systems. Its design ensures the controlled startup and shutdown of sensitive electronics, preventing code execution errors during unstable power conditions. With a typical operating current of just 45µA, it is an efficient solution for power-conscious applications.

Key Features & Specifications

• Reset Threshold: The device triggers at a nominal voltage of 3.15V, with high accuracy (±75mV for 3V systems) over a wide temperature range.
• Reset Delay: Incorporates a fixed 350ms delay after the supply voltage rises above the threshold, ensuring full system stability before releasing the microcontroller from reset.
• Wide Supply Range: Operates from a supply voltage of 1V to 5.5V, making it suitable for a broad spectrum of digital logic families.
• Integrated Pull-Up: Includes a 5kΩ internal pull-up resistor on the reset output for simplified circuit design.
• Robust Construction: Housed in a compact SOT-23-3 surface-mount package, it is designed for automated assembly and offers an extended operating temperature range from -40°C to 85°C.
• Automotive Grade: Qualified to the AEC-Q100 standard, ensuring reliability for demanding automotive applications.

This supervisor is an essential component for adding power