MIC2772-M3S3YML-TR

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The MIC2772-M3S3YML-TR, an integrated supervisor, is one of the more popular ICs in the Power Management Integrated Circuit (PMIC) market. This device plays a key role in monitoring, supervising, and controlling power devices and systems in an array of applications including large power systems and industrial electronic applications. This product offers 3.3 V, 5 V and adjustable supplies, as well as over voltage, over current, and voltage monitoring. Its exceptional protection feature is associated with a wide variety of fail-safe mechanisms to avoid overloading and other hazardous circumstances.

Application Field

The MIC2772-M3S3YML-TR is ideal for usage in almost any power electronics design such as telecom/datacom, consumer electronics, industrial systems, aerospace, automotive, and medical applications. This device is also ideal for monitoring 3.3 V and 5 V systems, as well as 12 V, 24 V, 40 V, and 60 V systems on a single device. Furthermore, it can be used to supervise a variety of power supplies, switching regulators, DC/DC converters, point-of-load (POL) regulators, and power management integrated circuits (PMICs).

The device’s tight supply current regulation of less than 1 µA minimizes power consumption and makes it ideal for battery-powered systems. Moreover, its fast start-up time (typicall 350 ns) allows it to respond quickly to changing conditions and its analog voltage-comparator accuracy is excellent, providing accurate sequencing of multiple power rails. The device also features a unique control input for the OV and OC pins allowing for programming of fault threshold levels during board-level testing.

Working Principle

The MIC2772-M3S3YML-TR acts as a voltage supervisor, monitoring and controlling power supply related voltages in a system. It ensures the system-level voltages remain within a predefined safe threshold. The device has fault tolerant protection features, providing detection and interception of over-voltage and short-circuit faults once they occur. With its low power consumption, the MIC2772-M3S3YML-TR is well suited for small carbon-zinc, alkaline and small lead-acid battery applications where accurate monitor/supervise of battery-provided power is needed.

The device monitors the operating points of various power circuits and provides a signal to the host controller if an abnormal situation is detected or when a fault or over-voltage occurs. It starts to output a logic signal to the system when any input voltage is below a certain threshold. It also monitors the under-voltage by periodically checking the external voltage, and an alert signal is sent if an under-voltage is detected. Additionally, the MIC2772-M3S3YML-TR can be programmed in millivolts increments to monitor the change in analogue power supply voltages. It also supervisors total system loads with load sense input that can detect changes in load current to protect the system and prevent possible dangerous circumstances.

The MIC2772-M3S3YML-TR is a cost-effective, power efficient, advanced power supervisor and sequencer that offers a variety of features designed to prevent potential hazardous conditions and ensure safe operation of advanced systems. With its excellent voltage accuracy and its ability to supervise multiple power supplies and integrate multiple rails into a single device, it is becoming a popular choice in power management integrated circuits.

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