MAX6037AAUK21+T

Overview

The MAX6037AAUK21+T is a low-dropout, micropower voltage reference from the MAX6037 family. It provides a fixed output voltage of 2.048V with an initial accuracy of ±0.2% and a maximum temperature coefficient of 25ppm/°C. The device operates from 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 can source and sink up to 5mA of load current and remains stable driving capacitive loads between 0.02µF and 1µF. It is housed in a 5-pin SOT-23 package and is specified over the -40°C to +125°C automotive temperature range.

Feature Summary

• Active-low shutdown mode significantly reduces quiescent current for power-sensitive applications
• Low dropout voltage capability enables efficient operation in low-voltage systems
• High precision performance with tight initial accuracy and low temperature drift
• Capable of sourcing and sinking load currents while maintaining stability

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm the 'AA' grade corresponds to the required 0.2% accuracy and 25ppm/°C temperature coefficient specifications. Ensure the '+T' designation aligns with lead-free package requirements for your assembly process. Cross-reference the full part number against the manufacturer's latest datasheet to confirm availability and any potential obsolescence notices.

Selection Notes

Select this component when a precise 2.048V reference is required with strict accuracy constraints. The A-grade specification ensures minimal deviation from the nominal voltage across the operating temperature range. Consider the shutdown feature if system power management requires minimizing standby current. Verify that the input voltage range accommodates the minimum dropout requirements for the intended load conditions.

Part Context

This device belongs to the MAX6037 family of low-power voltage references manufactured by Analog Devices (formerly Maxim Integrated). The family includes various fixed output voltages and adjustable versions. The AAUK21 variant specifically denotes the 2.048V output with high-grade accuracy. The SOT-23-5 package allows for compact board layouts suitable for space-constrained portable designs.

Replacement Considerations

Other members of the MAX6037 family, such as MAX6037BAUK21+T or MAX6037CAUK21+T, offer similar functionality but with different accuracy grades. Ensure the replacement matches the required initial accuracy and temperature coefficient specifications.