MAX6888CETE+

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PMIC - Supervisors are devices designed to monitor and control the power system activity. The MAX6888CETE+ is a supervisor and fault monitor device, catering for voltage applications available in 1.8V, 2.5V, and 3.3V. The improved version of the MAX6888 offers several distinct advantages over other industry-standard supervisors and fault monitors.

Features

The improved version of MAX6888CETE+ offers superior performance and advanced features. Key features of the device include:

• A low-voltage, low-power consumption supervisor with a low (1.0µA) standby current
• Accurate accurate detect system power supply voltage drops to a preset voltage
• A low voltage reset, providing failsafe protection by resetting the system when system power supply voltage drops
• An integrated supervisor circuit, which protects against accidental reset/disables of the system caused by noise and other anomaly
• Integrated reverse supply and reverse current protection features
• An active-high open drain Current-limit interrupt (CLI) output, which can be used with system-level power management

Applications

MAX6888CETE+ can be used in any application that requires supervising a voltage level. Among the applications that can benefit from the device’s power and performance features are:

• Analysis and monitoring of I/O power for any platform
• Power management for battery-operated medical equipment, automotive ECUs, and industrial systems
• Voltage-monitoring protection devices in communication systems, including Wi-Fi
• Overvoltage protection of power-limited applications
• Intrusion protection and power supply system monitoring in embedded devices
• Battery protection circuits for systems that require frequent or sudden power removal
• Low-voltage protection devices for netbooks and portable media players

Working Principle

The MAX6888CETE+ is an ultra-low power supervisor device. By minimizing the power it requires to operate, the MAX6888CETE+ can reduce the amount of heat generated by its operation. This makes it ideal for use in applications where thermal management is critical.

The device monitors the supply voltage and when the device detects that the supply voltage drops below a certain preset level, it initiates an internal reset. The MAX6888CETE+ then issues a single RESET signal that can be used to reset the system. The reset signal is usually active when the supply voltage returns to within a normal operating range. It also has an active-high output (CLI) that can indicate a low voltage or overvoltage monitoring.

The MAX6888CETE+ also has powerful reverse supply and reverse current protection circuitry, which provides a safety precaution for the application. The reverse-lean protection eliminates the risk of the reverse current flow to the VCC just in case of incorrect wiring or a faulty connection. The reverse supply protection will automatically shut off the power when any of the regulator’s nodes are externally driven.

Conclusion

The MAX6888CETE+ is an advanced supervisor and fault monitor device that gives designers the ability to monitor and protect their system at the same time. With its low power requirements, integrated features, and advanced protection features, the MAX688CETE+ is ideal for applications where system monitoring and protection are essential.

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