MAX6037BAUK25+T

Overview

The MAX6037BAUK25+T is a low-dropout, micropower voltage reference from the Analog Devices/Maxim Integrated MAX6037 family. It provides a fixed output voltage of 2.5V with an initial accuracy of ±0.3% and a maximum temperature coefficient of 50ppm/°C. The device operates from a supply voltage range of 2.5V to 5.5V, consuming a maximum quiescent current of 275µA. It features active-low shutdown functionality reducing current to less than 500nA. The component supports sourcing and sinking up to 5mA of load current with a maximum dropout voltage of 410mV at 5mA. It is housed in a 5-pin SOT-23 package and specified over an operating temperature range of -40°C to +125°C.

Feature Summary

• Active-low shutdown mode reduces quiescent current to less than 500nA for power conservation
• Low dropout voltage capability allows operation with minimal input-to-output differential
• Capable of sourcing and sinking up to 5mA of load current for flexible interface requirements
• Operates reliably across the automotive temperature range of -40°C to +125°C

Applications

• Medical equipment requiring stable reference voltages
• Portable battery-powered instrumentation
• Wireless LAN systems needing precise biasing
• Precision regulators utilizing series-mode references

Procurement Notes

Verify the specific suffix 'B' indicates the 0.3% initial accuracy grade and 'U' denotes the SOT-23-5 package configuration. Confirm the '+T' suffix corresponds to tape-and-reel packaging as per the manufacturer's ordering guide. Ensure the datasheet revision matches the required specifications for your design implementation.

Selection Notes

Select this component when a fixed 2.5V reference with moderate precision (0.3%) is required. It is suitable for applications where low quiescent current and shutdown capability are prioritized over ultra-high precision. Consider the 5mA drive capability for direct interfacing with ADCs or DACs without additional buffering.

Part Context

This part belongs to the MAX6037 family of low-power voltage references. The family includes fixed output options ranging from 1.25V to 4.096V and an adjustable version. The 'A' grade offers higher precision (0.2%, 25ppm/°C), while the 'C' grade provides lower cost options (0.5%, 50ppm/°C). All variants share the same pinout and general electrical characteristics.

Replacement Considerations

MAX6037AAUK25+T offers higher precision (0.2% accuracy, 25ppm/°C) with identical pinout and functionality. MAX6037CAUK25+T provides a lower-cost alternative with 0.5% accuracy. Verify that the thermal and electrical requirements of the application can accommodate the differences in initial accuracy and temperature coefficient.