MAX6451UT26L+

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PMIC - Supervisors

The MAX6451UT26L+ is a supervisor that is designed to monitor any single Power Supply (VCC) rail. It can be used on designs that are looking to avoid expensive losses that could be caused by a power fault or an unintended rail reset. This component is popular in applications such as industrial, communications and computer systems that are powered by any single positive voltage supply.

Features of the MAX6451UT26L+ Supervisors

The MAX6451UT26L+ device offers a lot of features that make it well suited for monitoring a single VCC rail in a system. These features include:

• Operates on input supply voltages from 1.8V to 5.5V
• Fixed reset and push-pull reset outputs
• EEPROM-programmable delay up to 2 minutes
• Manual reset input with internal pull-up resistor
• Dual window watchdog oscillator enabled at power-up
• Voltage monitor with programmable thresholds
• Low power-up RON (17µΩ typ.) for res two-wire interface (bar/breaker-sense)
• TTL-compatible push-pull reset output
• Low quiescent current (1.2mA typ.)
• Low operating voltage (1.8V typ.)

Applications of the MAX6451UT26L+ Supervisors

The MAX6451UT26L+ supervisor is designed for use in power sensitive applications such as industrial, communications, and computer systems. It also is ideal for use in applications that require an alert system that is capable of resetting a VCC rail if a power fault or unintended rail reset occurs. Applications include:

• Industrial systems and control systems
• Communication systems
• Computer systems, Robotics and Automation
• Embedded systems and telecommunications
• Backup power safety and monitoring
• Motor control and power conversion

Working Principle of the MAX6451UT26L+ Supervisors

The MAX6451UT26L+ supervisor is designed to monitor any single Power Supply (VCC) rail. It works on an input supply voltage of 1.8V to 5.5V. It has a dual window watchdog oscillator enabled at power-up and a voltage monitor with programmable thresholds. It also has a TTL-compatible push-pull reset output and an EEPROM-programmable delay of up to 2 minutes.

The supervisor is designed so that when the applied voltage falls outside of the specified thresholds, it will trigger a reset signal. This reset signal can be used to reset the VCC rail and prevent any losses that could be caused by a power fault or an unintended rail reset. When the power supply voltage has been restored, the reset functionality will be disabled and the power supply can be safely used again.

Conclusion

The MAX6451UT26L+ supervisor is a great device for monitoring a single Power Supply (VCC) rail. It offers a variety of features that make it well suited for industrial, communication, and computer systems. It can also be used for applications that require resetting a VCC rail if a power fault or unintended rail reset occurs. The supervisor works on an input supply voltage of 1.8V to 5.5V and can save energy by having a low quiescent current of only 1.2mA. It is a great solution for applications that require a reliable power monitoring and reset system.

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