MAX6346XR46+T

Overview

The MAX6346XR46+T is a supervisory circuit featuring an ultra-low-power design with a typical operating supply current of 500 nA. It monitors a single input voltage with a threshold of 4.63 V and an overvoltage threshold of 4.699 V. The device provides an active low, push-pull output with a reset delay time of 185 ms. It operates within a supply voltage range up to 5.5 V and maintains accuracy of 1.5%. The component functions reliably across a temperature range from -40°C to +85°C and is housed in a compact SOT-23-3 or SC-70-3 package.

Feature Summary

• Ultra-low power consumption suitable for battery-operated systems
• Active low push-pull output driver for direct logic interface
• Compact three-pin surface-mount packaging for space-constrained designs

Applications

• Portable electronic devices requiring extended battery life
• Embedded systems needing reliable voltage supervision
• Consumer electronics with limited board space

Procurement Notes

Verify the specific suffix (+T) indicates tape and reel packaging when ordering. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated to ensure authenticity. Check RoHS compliance status through official documentation before integration. Ensure the selected variant matches the required threshold voltage specifications for your application circuit design requirements.

Selection Notes

Select this component when low quiescent current is critical for system efficiency. The fixed threshold voltage simplifies design by eliminating external resistor networks. Consider the small footprint if board real estate is limited. Verify that the active low output polarity aligns with the downstream processor or microcontroller reset input requirements for proper system initialization.

Part Context

This part belongs to the MAX6346 series of supervisory circuits designed for monitoring power rails in portable applications. The series offers various threshold options to accommodate different voltage levels while maintaining consistent low-power characteristics. The XR46 variant specifically targets applications requiring precise supervision around the 4.63 V level.

Replacement Considerations

Cross-reference with other MAX6346 variants sharing the same package but differing threshold voltages if voltage levels change. Verify pinout compatibility with existing PCB layouts before substitution. Ensure thermal performance remains adequate under maximum load conditions.