ADM1813-5AKS-RL7

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PMIC (Power Management Integrated Circuits) are an important part of a computer system, responsible for managing and distributing power supplies to the different components of the system. This includes monitoring the power levels, setting power limits, and managing system clock frequencies to reduce power consumption. Supervisors are integral components within the power management systems of computers, ensuring all components are receiving the correct power as needed. ADM1813-5AKS-RL7 is an example of a supervisor PMIC, intended to monitor and control power supply voltages in multiple system configurations.

ADM1813-5AKS-RL7 Application Field and Working Principle

The ADM1813-5AKS-RL7, manufactured by Artesyn Embedded Technologies, is a power supervisor intended to monitor devices and systems operating with a supply voltage ranging from 1.2 to 3.63 volts. Designed to work with low power applications in automotive, medical devices, consumer mobile and embedded computing equipment, this power supervisor offers five voltage channel outputs and features an integrated 65mV reference voltage. The power system using this power supervisor can monitor and control up to five devices or systems, setting thresholds ranging from 0.84 volts to 3.6 volts.

The power supervisor also includes an integrated watchdog timer, offering adjustable timeout periods of 2.1 to 250 seconds. This timer automatically resets a system if it reaches a certain threshold and initiates a new cycle. The on-chip voltage regulator prevents overvoltage or undervoltage events, to protecting system components from power surges over time.

This power supervisor also comes with one of three external pins that can be used for additional system control. The Overvoltage Protection (OVP) pin is used to activate an external MOSFET, enabling the supervisor to disconnect the external voltage, in case of an overvoltage event. An external signal to this pin can also be used to act as an On/Off pin, enabling users to power the system up or down remotely, without having to unplug the power supplies.

The other two pins, the Power Good and Reset pins, are used to signal when the stored voltage is within an acceptable range and when the system needs to be reset due to a watchdog timeout. These pins can then be connected to external components which trigger further actions as desired.

The ADM1813-5AKS-RL7 power supervisor is packaged in a 3x3mm 8-lead VQFN (Very Thin Quad Flat No Lead) surface-mount package, providing an additional level of power integrity to any computer system. In addition, it ensures that the system components are always receiving an appropriate amount of power, no matter the system configuration, preventing issues such as degraded performance or even data loss.

Conclusion

The ADM1813-5AKS-RL7 is a power supervisor PMIC designed for low-power applications, allowing it to handle voltages ranging from 1.2 to 3.6 volts. With five voltage channel outputs, it is capable of monitoring and controlling up to five devices or systems, setting thresholds ranging from 0.84 to 3.6 volts. Equipped with an integrated 65mV reference voltage and a watchdog timer, it adds an additional layer of power integrity and protection to any system. The three external pins, OVP, Power Good, and Reset, can be used for further control and are connected to external components to trigger further actions when desired. The power supervisor is packaged in a 3x3mm 8-lead VQFN surface-mount package, making it easy to integrate into any system and ensuring the components always get the appropriate amount of power.

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