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PMIC - Supervisors

MCP112-475E/TO is a multi-functional supervisor circuit designed for battery-powered applications and systems. It provides a reset output, and two adjustable reset inputs for monitoring, as well as an adjustable power-on circuit.

Application Field

This device is ideal for use in a wide range of portable electronic applications such as cellular phones, PDAs, digital cameras, tablet computers, and portable gaming devices. It can be used for main systems power supervision and reset, as well as for DC/DC power conversion and monitoring.

Working Principle

MCP112-475E/TO is a standard supervisory circuit with two reset outputs and two adjustable reset inputs. The reset output can be used to reset the system upon system startup or after an abnormal shutdown. When the reset input voltage is above or below the trip point, the reset output will be asserted, sending a reset signal to the system. Additionally, the device has the following features:

• Push-button Resume: a restart after a power fail can be performed by pressing a push-button
• Power-On Reset: a reset signal is generated within 5ms after power is applied
• Power Monitoring: the input supply voltage can be monitored and a reset asserted if the voltage falls below or rises above the set trip point.

The device has an integrated voltage regulator, so no external voltage regulator is required. The device also has an adjustable power-on delay and can be set to provide a reset signal when the power supply voltage falls below or rises above the set trip point. An integrated watchdog timer ensures proper system operation.

Conclusion

MCP112-475E/TO is a multi-functional supervisor circuit designed for battery-powered applications and systems. It provides a reset output, two adjustable reset inputs for monitoring, as well as an adjustable power-on circuit. It is designed for use in a wide range of portable electronic applications such as cellular phones, PDAs, digital cameras, tablet computers, and portable gaming devices. Its features include push-button resume, power-on reset, and power monitoring.

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