MAX6803US44D3

Supervisors Overview

The MAX6803US44D3 is a single-input voltage supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1.2V to 5.5V and features a fixed threshold voltage of 4.375V for monitoring power rails. The device provides an active-low, push-pull reset output with a typical reset delay time of 225ms. It supports manual reset functionality via an external input pin. The component is designed for surface-mount installation in SOT-143-4 packages and functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides precise voltage supervision with a fixed threshold for reliable system reset generation
• Features low quiescent current consumption suitable for battery-powered applications
• Includes manual reset input capability for controlled system initialization

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Embedded systems needing reliable brown-out protection
• Microcontroller-based circuits requiring stable power-on reset sequences

Supervisors Procurement Notes

Verify the exact suffix D3 against official manufacturer documentation to confirm package type and tape-and-reel specifications. Confirm availability status as distribution channels may list limited stock or obsolete status. Ensure compatibility with existing PCB footprint designs before procurement.

Supervisors Selection Notes

Select this component when a fixed 4.375V threshold is required for single-supply monitoring. Consider the SOT-143-4 package constraints for space-limited designs. Evaluate the 225ms reset delay against system startup timing requirements to ensure proper microcontroller initialization.

Supervisors Part Context

This part belongs to the MAX6803 series of ultra-low-power reset circuits. It is designed for applications requiring minimal standby current while maintaining accurate voltage monitoring. The series typically offers various threshold options and package configurations to suit different embedded system needs.

Supervisors Replacement Considerations

Check for MAX6803 variants with different thresholds or packages. Verify if MAX6804 or MAX6805 series components offer compatible interfaces but different performance characteristics.