Supervisor Open Drain or Open Collector 1 Channel SOT-23-3

The MCP120T-450I/TT is a microcontroller supervisory (voltage reset) IC from Microchip Technology designed to monitor the system supply voltage and ensure reliable startup and operation of microcontroller-based systems. It keeps the microcontroller in the reset state until the supply voltage reaches a safe operating level and automatically asserts a reset signal if the supply voltage falls below the preset threshold, protecting the system from brown-out and power-failure conditions. The device features an open-drain active-low RESET output, a 4.375 V threshold, and is housed in a compact SOT-23-3 package, making it suitable for space-constrained embedded applications.

Key Features

Monitors a single supply voltage with a 4.375 V reset threshold Open-drain, active-low RESET output Holds the microcontroller in reset during power-up until VDD is stable Automatically resets the system during brown-out or power-loss events 150 ms minimum reset timeout after VDD exceeds the threshold Supports 3 V, 3.3 V, and 5 V system supervision Low operating current (typically 45 µA) Wide operating temperature range: −40°C to +85°C Compact SOT-23-3 surface-mount package

Hashtags #Microchip #MCP120 #VoltageSupervisor #ResetIC #BrownOutProtection #PowerOnReset #PMIC #EmbeddedSystems #Microcontroller #SOT23 #PowerManagement #CircuitProtection