Microchip Technology's MCP120T-475I/TT Voltage Supervisor

The MCP120T-475I/TT is a highly reliable voltage supervisory device designed and manufactured by Microchip Technology, a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions. This compact component is engineered to keep microcontroller-based systems safe by monitoring the supply voltage and ensuring it remains within specified thresholds. It is an essential part of any system where data integrity and reliable operation are critical, especially during power-up, power-down, and brown-out conditions.

This supervisor device has a preset threshold voltage of 4.75V, which makes it suitable for 5V systems. When the monitored voltage drops below this threshold, the MCP120T-475I/TT asserts a reset signal to prevent the system from operating under unfavorable conditions. The reset signal remains asserted until the voltage returns to a safe level, plus a built-in delay time to ensure system stability.

The MCP120T-475I/TT is characterized for operation over the industrial temperature range of -40°C to +85°C, making it robust and suitable for harsh environments. It comes in a small three-pin SOT-23 package, which is ideal for space-constrained applications. It is also available in the TO-92 package, offering flexibility for different design layouts.

Key features of the MCP120T-475I/TT include:

• 4.75V precision voltage monitoring
• Low supply current of 9 μA (typical), ideal for battery-operated applications
• 35 ms (minimum) reset time-out period
• Open-drain output, which allows for wired OR connections
• Immunity to short V<sub>DD transients
• Temperature range of -40°C to +85°C suitable for industrial applications

Applications for this device are diverse, including but not limited to, microcontroller systems, computers, controllers, intelligent instruments, portable/battery-powered products, and automotive systems. The MCP120T-475I/TT's reliability and precision make it a go-to choice for designers looking to enhance system integrity and avoid the perils of unpredictable voltage dips and surges.

Overall, the MCP120T-475I/TT voltage supervisor from Microchip Technology is an indispensable component for maintaining the health and reliability of electronic systems, ensuring they operate within safe voltage parameters.