RP300K43DA8-TR

Supervisors Overview

The RP300K43DA8-TR is a supervisory circuit from the Nisshinbo RP300K series, functioning as a voltage detector with an internal counter delay. It features a threshold voltage of 4.38 V and maintains a set accuracy of 0.8%. The device operates within a supply voltage range of 720 mV to 5.5 V, consuming a typical quiescent current of 950 nA. It provides a CMOS open-drain output and supports manual reset functionality without a watchdog timer. The component is housed in a DFN-PLP-1010-4B-4 package and is rated for operation between -40°C and +85°C.

Supervisors Feature Summary

• Integrates an internal counter type delay function to prevent false triggering during power transitions.
• Delivers high detection accuracy of 0.8% for precise voltage monitoring applications.
• Features low power consumption suitable for battery-operated systems.

Supervisors Applications

• Portable electronic devices requiring reliable power management
• Battery-powered equipment needing low quiescent current supervision
• Embedded systems utilizing manual reset mechanisms

Supervisors Procurement Notes

Verify the specific suffix DA8 corresponds to the required 4.38 V threshold and delay characteristics before ordering. Confirm that the DFN-PLP-1010-4B-4 package dimensions align with your PCB footprint requirements. Ensure compatibility with the CMOS open-drain output configuration for your system logic levels. Cross-reference the manufacturer datasheet for any recent revisions or environmental compliance updates.

Supervisors Selection Notes

Select this component when a fixed 4.38 V threshold with internal delay is required. Compare against the RP300N series if a smaller SOT-23-5 package is preferred instead of the DFN format. Consider the 950 nA current draw for strict power budget constraints. Verify that the manual reset feature meets the system's recovery protocol needs.

Supervisors Part Context

This part belongs to the RP300K series of low-voltage detectors designed for compact surface-mount applications. It complements the RP300N series by offering a different package option while maintaining similar electrical performance metrics. The series focuses on providing accurate supervision with minimal power overhead for modern portable electronics.

Supervisors Replacement Considerations

Check for direct substitutes within the RP300K family with adjusted threshold voltages. Evaluate RP300N variants if package size reduction is acceptable. Verify pinout compatibility before swapping to ensure no redesign is necessary.