MAX6037AAUK33+T

Overview

The MAX6037AAUK33+T is a low-dropout, micropower voltage reference from the MAX6037 family. It provides a fixed output voltage of 3.3V with an initial accuracy of ±0.2% and a maximum temperature coefficient of 25ppm/°C. The device operates within a supply voltage range of 2.5V to 5.5V and consumes a maximum quiescent current of 275µA. It features active-low shutdown functionality that reduces current consumption to less than 500nA. The component supports sourcing and sinking up to 5mA of load current and is specified over the automotive temperature range of -40°C to +125°C.

Feature Summary

• Active-low shutdown mode significantly reduces power consumption for battery-operated systems
• Low dropout voltage ensures stable regulation under varying input conditions
• High precision performance with tight initial accuracy and low temperature drift
• Capable of driving capacitive loads ranging from 0.02µF to 1µF

Applications

• Medical Equipment
• Portable Equipment
• Wireless LAN Systems
• Precision Regulators

Procurement Notes

Verify the specific suffix 'AA' indicates A-grade accuracy (±0.2%, 25ppm/°C) rather than B or C grades. Confirm the '+T' designation corresponds to tape-and-reel packaging. Ensure the part number matches the exact 3.3V fixed output variant. Cross-reference the manufacturer's latest datasheet revision to confirm pinout and electrical specifications remain unchanged.

Selection Notes

Select this component when high precision is required alongside ultra-low power consumption in space-constrained designs. The A-grade specification offers superior stability compared to standard grades. Verify that the input voltage remains within the 2.5V to 5.5V range to maintain line regulation. Consider the 5mA current capability against the load requirements to ensure adequate drive strength without exceeding thermal limits.

Part Context

This device belongs to the MAX6037 family of series-mode voltage references manufactured by Analog Devices / Maxim Integrated. The family includes adjustable versions and other fixed voltage options such as 1.25V, 2.048V, 2.5V, 3.0V, and 4.096V. All variants share the same SOT23-5 package and core architecture, differing primarily in factory-trimmed output voltage and accuracy grade.

Replacement Considerations

Direct substitutes include MAX6037BAUK33+T and MAX6037CAUK33+T. Note that these alternatives offer lower accuracy grades (0.3% and 0.5%) and higher temperature coefficients (50ppm/°C). Ensure the application tolerates these reduced precision specifications before substituting.