MIC803-31D4VC3-TR

Supervisors Overview

The MIC803-31D4VC3-TR is a voltage supervisory circuit manufactured by Microchip Technology, designed for monitoring single power supply rails. It operates within a supply voltage range of 1 V to 5.5 V and features a fixed threshold voltage of 3.08 V with an accuracy of 2.5%. The device provides an open-drain reset output that is active low, triggered by a minimum reset timeout of 140 ms or a specific delay time of 1.8 s depending on configuration variants. It consumes a typical operating supply current of 4.5 µA and functions reliably across a junction temperature range of -40°C to +125°C. The component is housed in a compact SC-70-3 surface-mount package.

Supervisors Feature Summary

• Provides reliable system reset via open-drain output when monitored voltage drops below the specified threshold
• Ensures stable operation during power-up and power-down sequences with defined reset timing characteristics
• Maintains low power consumption suitable for battery-operated applications through minimal quiescent current draw

Supervisors Applications

• Monitoring microprocessor power supplies in embedded systems
• Providing reset signals for digital logic circuits requiring voltage supervision
• Protecting data integrity in portable electronic devices during brown-out events

Supervisors Procurement Notes

Verify the exact suffix against official Microchip documentation to confirm pinout and electrical specifications, as variations exist within the MIC803 family. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into the manufacturing process. Ensure the selected packaging format aligns with automated assembly capabilities.

Supervisors Selection Notes

Select this component when a fixed 3.08 V threshold is required for single-channel voltage monitoring. Consider the SC-70-3 package size constraints and the open-drain output capability for interfacing with various logic families. Evaluate the 1.8 s reset delay requirement against system startup timing needs to ensure compatibility with target application performance standards.

Supervisors Part Context

This part belongs to the MIC803 series of simple supervisor circuits from Microchip Technology. The series offers various threshold voltages and packages to accommodate different design requirements. The MIC803-31D4VC3-TR specifically utilizes the VC3 suffix indicating the SC-70-3 package variant, distinguishing it from SOT-23-3 versions like the VM3 suffix parts.

Supervisors Replacement Considerations

Direct substitutes include other MIC803 variants with matching 3.08 V thresholds and SC-70-3 packaging, such as MIC803-31D4VM3-TR if package adaptation is acceptable. Cross-reference with competitor offerings only if functional equivalence regarding threshold accuracy and reset timing is verified through official datasheets.