MIC809-5SYC3-TR Integrated Circuits (ICs)

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PMIC supervisors are used for a variety of applications, ranging from the simplest of system reset functions to the complex supervision of supply rails and the monitoring of specific electrical system characteristics. The MIC809-5SYC3-TR is a Power Management Integrated Circuit (PMIC) Supervisor device tailored to monitor the voltage of core supply rails, in order to detect faults and system malfunctions. It is an ideal choice for providing reset function for battery powered or high reliability embedded systems.

Application Field

The MIC809-5SYC3-TR is ideal for applications such as AMC systems, data processing systems, surveillance and intelligent infrastructure systems, as well as embedded systems that require basic reset functionality. It is also particularly useful in automotive power train and sensor network applications, due to its tolerance in a wide (–40°C to +125°C) temperature range.

Working Principle

The MIC809-5SYC3-TR works by monitoring the main core supply rail voltage and detecting any excess variation. It has separate modules for the detection of under-voltage (UV) and over-voltage (OV) conditions, as well as an independent watchdog timer for system reset purposes. The input supply voltage range is 2.5V to 13.2V, and the reset output is a Push-Pull output with an active low level.

When the system is powered on, the supply voltage is monitored and compared with the voltage thresholds set in the UV and OV modules. If the voltage is outside the preset voltage range (for example, lower than the UV threshold), a reset signal is generated. Should the voltage return to within the normal range, the reset signal is deactivated. In addition, the MIC809-5SYC3-TR includes a watchdog timer, which can be used to detect any system hang ups by generating a reset signal in the event of a prolonged system inactivity.

In short, the MIC809-5SYC3-TR is an ideal choice for applications that require a reliable monitoring and reset function, as well as a wide temperature range tolerance. It is capable of detecting OV and UV conditions, and has an independent watchdog timer for reset purposes. This makes it an ideal choice for embedded and automotive applications, particularly those that require reliable system reset and monitoring.

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