MAX6328UR30+T

Supervisors Overview

The MAX6328UR30+T is a supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated, designed for monitoring single voltage rails. It operates within a supply voltage range of up to 5.5 V and features a fixed threshold voltage of 3 V with an overvoltage threshold of 3.045 V. The device provides a low-active reset signal via an open-drain output, ensuring compatibility with various logic families. Key electrical parameters include a reset timeout of 185 ms and a typical accuracy of 1.5%. It consumes a maximum operating current of 500 nA, making it suitable for power-sensitive applications. The component is housed in a compact SOT-23-3 surface-mount package and supports operation across an extended temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Ultra-low-power consumption with a maximum operating current of 500 nA
• Fixed 3 V threshold voltage for precise power supervision
• Open-drain active-low reset output for flexible logic interfacing
• Compact SOT-23-3 surface-mount packaging

Supervisors Applications

• Portable battery-powered equipment requiring efficient power management
• Microprocessor and microcontroller system supervision
• Smartphone and handheld device power control circuits
• Automotive electronics systems

Supervisors Procurement Notes

Verify the specific suffix UR30 to confirm the 3V threshold specification, as variations exist within the MAX6328 family. Ensure the ordering code includes the +T designation for tape-and-reel packaging if automated assembly is required. Cross-reference the manufacturer part number against official Analog Devices documentation to validate authenticity and revision status before procurement.

Supervisors Selection Notes

Select this component when a fixed 3V supervision threshold is required for single-rail monitoring. The open-drain output necessitates an external pull-up resistor; ensure the selected resistor value aligns with the target logic voltage levels. Consider the 185ms reset delay for timing-critical applications. Verify that the 500nA quiescent current meets the standby power budget constraints of the design.

Supervisors Part Context

This part belongs to the MAX6328U series of ultra-low-power voltage supervisors. It is distinct from other variants like the MAX6328UR23 or MAX6328XR31, which feature different threshold voltages (e.g., 2.3V or 3.1V). The 'U' indicates the specific package type, while 'R30' defines the 3V threshold. It serves as a dedicated power management IC rather than a general-purpose regulator.

Supervisors Replacement Considerations

Direct substitutes within the same family require matching the 3V threshold and SOT-23-3 package. Variants such as MAX6328UR30 without the '+T' suffix offer identical electrical characteristics but differ only in packaging format. Other MAX6328 models with different thresholds are not electrically compatible replacements.