Microchip Technology MCP112T-315E/TT Voltage Supervisor

The MCP112T-315E/TT from Microchip Technology is a compact, highly reliable voltage supervisor designed to keep microcontroller systems safe by monitoring the power supply voltage. This device is particularly well-suited for battery-powered applications where maintaining the correct operation during power fluctuations is essential. It is a cost-effective solution for system reset and is commonly used in a wide range of applications including computers, controllers, intelligent instruments, and portable electronics.

This voltage supervisor is available in a 3-pin SOT-23 package, making it ideal for space-constrained applications. It operates over a voltage range of 1.0V to 5.5V, which covers most low-voltage applications, and has a preset threshold voltage of 3.15V (±1.5%). The MCP112T-315E/TT provides a critical protective measure by holding the microcontroller in reset until the system voltage reaches stable operating levels during power-up, power-down, and brown-out conditions.

The device features an active-low, open-drain output which holds the reset signal low as long as the monitored voltage remains below the threshold. Once the voltage exceeds the threshold, the MCP112T-315E/TT releases the reset signal after a built-in delay time, which ensures the system voltage is stable before allowing the microcontroller to start up.

With its low supply current draw of just 1 µA (typical), the MCP112T-315E/TT is an energy-efficient choice for portable applications. It also offers a high degree of precision with a tight threshold tolerance and low temperature coefficient, ensuring reliable operation over the entire temperature range of -40°C to +85°C.

Key features of the MCP112T-315E/TT include:

• Low power-on reset input voltage threshold of 3.15V
• Low supply current of 1 µA (typical)
• High accuracy over temperature
• Built-in delay time for voltage stabilization
• Wide operating temperature range of -40°C to +85°C
• Compact SOT-23 package suitable for space-constrained applications

The MCP112T-315E/TT is a reliable and precise voltage supervisor that enhances system reliability by preventing incorrect operation due to unstable power supplies, making it a vital component in safeguarding microcontroller-based systems.