MCP120-485DI/TO

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The MCP120-485DI/TO is a supervisor circuit from Microchip Technology. This supervisor circuit is part of their Power Management, Interface and System Administration Peripheral (PMIC - Supervisors) family. Specifically, the MCP120-485DI/TO is a three-terminal, active-low, reset circuit. It monitors power supply voltage levels, and provides a reset output in the event of a power supply fault.

The MCP120-485DI/TO is an ideal choice for use in automotive, industrial and general applications such as microcontrollers, digital devices, processors and data converters. It also provides enhanced protection against noise, brown-out, inrush-current or over/under voltage conditions. In addition, the MCP120-485DI/TO is a short circuit safe component that offers both low input and output capacitance.

The MCP120-485DI/TO has an extensive operating temperature range from -40°C to +125°C, making it an excellent choice for use in extreme temperature environments. It also offers overvoltage protection up to 32V and is RoHS compliant, making it suitable for use in automotive and other green applications. The MCP120-485DI/TO is available in a TSSOP-14 package, making it ideal for space-constrained applications.

The MCP120-485DI/TO has an input range of +5.5V to +32V and an output range of +1.8V to +5.5V. The device features an active-low reset, which is asserted when VDD is below a preset trip point. The active-low reset is typically 0.5V below its nominal voltage, with a minimum threshold of 2.275V. The device also features a manual reset input, which is pulled low in a failed state. This can be used to provide a reset signal for other components in the system.

The MCP120-485DI/TO also features a power-on reset (POR) delay. This POR delay sets the maximum on-time for the active-low reset output. This is typically set to 200ms to allow for power up sequencing when using multiple voltages. The MCP120-485DI/TO also features an internal watchdog timer, which can be used to provide a timeout in case of system failure.

The MCP120-485DI/TO is an open-drain output, which allows the reset signal to be inverted for active-high reset signaling. It is also possible to connect the output of the device to a power control device, such as a DC-DC converter. Connecting the output in this fashion allows the device to control the power supply, providing power sequencing and enabling power up reset.

The MCP120-485DI/TO is an excellent supervisor circuit for a wide range of applications. Its features make it suitable for use in automotive, industrial and general applications. Its operating temperature range, wide input voltage range, reset output and watchdog timer functions make the device an ideal choice for power supply and system protection.

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