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MAX6858UK22D3+T application field and working principle

Introduction

The MAX6858UK22D3+T is a high-performance power management and supervision (PMIC-Supervisors) device for embedded systems that offers a complete and highly integrated protection and power management solution. This IC offers user-programmable monitoring of multiple supplies, logic, analog and system conditions in a low cost, small footprint QFN package. With its ability to measure multiple and continuous voltages, MAX6858UK22D3+T ensures accurate voltage thresholds, current and temporal accuracy for system optimization and improved system health.

Application fields

The MAX6858UK22D3+T is designed for applications where precision power management and supervision are required. This device can detect abnormal power supply levels, provide hardware alert signals, and is suitable for use in consumer, telecom, industrial, networking, automotive and/or control systems.

The MAX6858UK22D3+T provides power path full protection. It can help monitor critical parameters, such as input voltages, system temperatures and battery discharge levels, and take corrective actions, such as autonomous input changes, alert and alarm signals and the ability to shut down a system in order to protect it from abnormal operational condtions, such as over and under voltage, power interruptions, over currents or high voltage transients.

It can also be used to smooth power supply rails and power system operation in order to reduce switching noise and electromagnetic interference (EMI). The MAX6858UK22D3+T provides integrated analog and digital power supplies, allowing the device to offer cost and board footprint savings when compared to traditional discrete solutions.

Working principle

The MAX6858UK22D3+T is designed with a range of configurable safety and power management features to provide power path protection and efficient system operation. The integrated internal MOVs can handle a wide range of input voltages and ESD/surge protection capabilities while providing fast response and accurate voltage and current control.

The internal MOV’s are designed to ensure correct connections and power-on sequences and to provide additional protection against over and under voltage events. The input voltage range monitoring allows up to 7.5V with 5%, over and under-voltage protection. The device can also provide monitoring of multiple system supplies and temperatures.

The MAX6858UK22D3+T also includes a range of user-programmable functions and warnings in order to improve diagnostics and fault containment. It features a VCC power up delay alarm for voltage ramp control, over-voltage and over-temperature alarms with selectable threshold, and an output power-on sequence for orderly system power-up.

The device also offers advanced power management capabilities, such as adjustable switching frequency, soft-start, and voltage sequencing. It also includes an adjustable UVLO threshold and an adjustable short circuit current protection limit.

Conclusion

The MAX6858UK22D3+T is a highly integrated power management and supervision device designed for applications where precise and safe power management is needed. This device presents a range of configurable safety and power management features to provide power protection and system operation efficiency. It features a range of user-programmable functions and warnings for improved diagnostics and fault containment, as well as advanced power management capabilities.

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