ADM708SAR

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Power management integrated circuits (PMICs) are used in a large number of electronic applications to help supply, control, and monitor system power sources and thermal management. PMICs offer a cost effective solution for system designers where the power budget is tight. PMICs—such as the ADM708SAR—are critical components in the power supply system of the system. They are used to monitor and control the reliable operation of a system’s supply voltage level.

ADM708SAR Application Field

The ADM708SAR is a supervisor IC that combines power monitoring with system reset. It provides built-in voltage monitoring, voltage control, and adjustable reset thresholds with a low supply current. This PMIC is ideal for applications including power supply monitoring, voltage supervision, and delay-on reset. It is used in applications such as communication, industrial controls, medical, security, and monitoring instruments.

The ADM708SAR is suitable for precision power systems, 12V to 32V DC input applications, and Automotive applications. It is also compatible with 3.3V, 5V, and 12V DC input voltage systems, as well as 48V AC/DC input power systems. Its over voltage and under voltage thresholds are adjustable, and its reset output can handle up to 150 mA of current.

ADM708SAR Working Principle

The ADM708SAR monitors two supply voltages, one for the power line and one for the load. If the monitored voltage is above or below specified thresholds, the output is assertive and triggers an interrupt from the system. This ensures that the voltage remains within an acceptable operating range. The ADM708SAR IC includes an adjustable delay-on-reset (DOR) feature, which allows users to set up the reset time to a specific reset threshold. This function helps protect the system against undesired in-rush currents and supports system restart recovery.

The ADM708SAR features precision voltage monitoring for a wide range of input voltages and supply currents. When the load voltage is below the set threshold, the device provides a logic reset. The reset pin and separate manual reset pins are both active low outputs. The ADM708SAR\'s reset cycle can be extended and delayed by adjusting the internal logic delay. Additionally, the device includes a power-on reset (POR) which the user can disable to reduce the power consumption of the system. The ADM708SAR also includes a circuitry impairment (CI) which warns against any component malfunctioning.

Conclusion

The ADM708SAR is a robust power management device ideal for multiple application fields, including automotive, industrial control, communication, and medical. It monitors and controls supply and load voltages to ensure reliable system operation and generates reset cycles to protect the system from in-rush currents. Additionally, it helps reduce power consumption when the system is disabled and provides ample warning for component malfunctioning. Its cutting-edge features and reliability make the ADM708SAR an asset for any power supply system.

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