MCP112T-315E/LB Integrated Circuits (ICs)

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The MCP112T-315E/LB is a micropower supervisor device that belongs to the family of PMIC Supervisors and is specially designed for microcontroller reset applications. As a supervisor and reset IC, it can monitor the supply voltage up to a programmable value, and generate a reset pulse when necessary. It also features an open drain NMOS TECH which is optimized for AC coupling with a wide range of microcontrollers.

The MCP112T-315E/LB has a wide range of operational supply voltages from 2V to 5.5V, making it suitable for a variety of applications. It is also able to withstand up to 10kV of ESD on all pins. Besides, its exceptional temperature range makes it suitable for embedded systems operating in extreme environments.

Working Principle

The MCP112T-315E/LB has a built-in voltage detector will compare the voltage set by the user on the supervisor’s VDD input with the VDD supply voltage. Depending on the magnitude of the differential between the two voltages, it will generate one of the two responses: a Power-On Reset (POR) or an Undervoltage (UV) signal.

When the supply voltage reaches the VDD threshold, a low-voltage level will be asserted. The POR signal will be generated if the supply voltage is asserted below the VDD threshold voltage or if the reset input pin is below the assert voltage. On the other hand, the UV signal will be generated if the supply voltage is above the VDD threshold voltage and the reset input pin is low. It should be noted that the POR signal will override the UV signal.

Application Field

The MCP112T-315E/LB is especially recommended for use in monitoring, resetting, and prompting of microcontroller-based systems. It can be used in a wide variety of embedded systems, including those that require extreme temperature ranges, such as industrial electronics, remote controls, or other applications where temperature fluctuation is highly expected. Its built-in power-on reset feature also makes it suitable for applications where supply transients occur, such as on systems powered from batteries, or those that may be exposed to high surges, such as automotive and aviation systems.

Furthermore, it can also be used in multiplexer systems for fail-safe switching purpose, as an active voltage supervisor for power supply systems, or as an active reset for 4-phase motor drivers. It is also suitable for use as a current supervisor, as well as in power supply sequencing and fault detection applications.

In conclusion, the MCP112T-315E/LB is a reliable, high-quality supervisor and reset IC that is suitable for a wide range of applications, including embedded systems, motors drivers, and power supply systems. With its exceptional temperature range, it is well-suited for extreme environments and its power-on reset feature makes it ideal for systems where supply transients occur.

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