PT7M6248CLTA3E

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Application Field and Working Principle of PT7M6248CLTA3E

PT7M6248CLTA3E is a voltage supervising IC (PMIC - Supervisors) with 1 to 5 peripherally monitoring voltages. It contains multiple power monitoring circuits, with a range of warning signals that protect microprocessors from over- and under-voltages, as well as power-on reset (POR). Its core applications are in logic reset distribution and voltage monitoring for microprocessors and ASICs for PCs, phones and other portable devices.

Features

• Low quiescent current: 1uA max
• Low supply voltage: 2.5V min.
• Wide supply voltage: 3.6V max
• Four selectable reset outputs: Hardware Reset (HWR), Watchdog Timer Reset (WTR), Detection Reset (DR) and Power-on Reset (POR)
• Power-on reset threshold: 3.28V
• Adjustable reset output debounce time: 8s max
• High accuracy: +/-1%

Working principle

PT7M6248CLTA3E monitors power supply voltages, including 1 to 5 peripheral voltages, to detect over- and under-voltage for microprocessors and ASICs for PCs, phones and other portable devices. It contains four selectable reset outputs, including: Hardware Reset (HWR), Watchdog Timer Reset (WTR), Detection Reset (DR) and Power-on Reset (POR). When the monitored voltages reach their prescribed levels, an active low reset output causes the resetting of the system. HWR, WTR and DR reset outputs have a fixed reset threshold level, while POR has adjustable reset threshold levels.

The working principle of this IC is very simple. When the power supply voltages exceed their predetermined threshold levels, the IC triggers its reset output. Depending on the threshold voltage that has been exceeded, the output can be HWR, WTR, DR or POR. The reset output is reactivated when the measured power supply voltages return to within its predetermined range.

In addition, the IC also features a power failure protection mechanism, where any detected power failure produces a reset output in order to prevent system reset. This IC is designed to be used with external components for over-voltage protection, overcurrent protection and external reset input.

Advantages

The PT7M6248CLTA3E offers a range of advantages that make it an ideal choice for power supply monitoring and protection. Among these, its ultra low quiescent current and wide supply voltage range make it a great choice for battery operated applications. Its adjustable reset threshold levels allow for greater accuracy and flexibility. Moreover, its power failure protection helps to keep the system safe from unexpected power outages, while its four selectable reset outputs provide countless options.

Conclusion

PT7M6248CLTA3E is a reliable and versatile voltage monitoring IC that is suitable for a variety of applications. Its low quiescent current, wide supply voltage range and adjustable reset threshold levels make it an ideal choice for battery operated applications. Furthermore, its power failure protection mechanism and multiple selectable reset outputs make it a reliable power monitoring and protection solution for microprocessors, ASICs and other systems.

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