MAX6125EUR-T

Overview

The MAX6125EUR-T is a low-dropout, micropower, three-terminal voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 2.5V with an initial accuracy of ±1%. The device operates within a supply voltage range of 2.7V to 12.6V and features a typical temperature coefficient of 15ppm/°C, guaranteed to be less than 50ppm/°C. Quiescent supply current is typically 75µA at +25°C and up to 130µA across the operating temperature range. It is housed in a 3-pin SOT-23 package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Low dropout voltage capability of 200mV makes it suitable for 3V and 5V systems
• Micropower consumption with supply current virtually independent of input voltage variations
• Stable operation for all capacitive loads up to 10nF without requiring output capacitance

Applications

• Battery-powered systems
• Portable and hand-held equipment
• Data-acquisition systems
• Instrumentation and process control

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature rating. Confirm RoHS compliance status as indicated by manufacturer markings. Ensure compatibility with system input voltage ranges and load requirements before integration. Check for any recent lifecycle notices or obsolescence warnings directly from the manufacturer.

Selection Notes

Select this component when a fixed 2.5V reference is required in space-constrained designs utilizing the SOT-23 package. Consider its low quiescent current for battery-operated applications where power efficiency is critical. Evaluate the 200mV dropout characteristic against minimum system supply voltages to ensure proper regulation under varying load conditions.

Part Context

This part belongs to the MAX61xx family of low-cost, low-dropout, three-terminal voltage references. The family includes variants with different fixed output voltages (4.096V, 4.5V, 5.0V) and an adjustable version (MAX6160). These devices share similar architectural features, including micropower operation and stability with capacitive loads, designed primarily for precision analog interface applications.

Replacement Considerations

Direct substitutes within the same family include MAX6141 (4.096V), MAX6145 (4.5V), and MAX6150 (5.0V) in the SOT-23 package. For adjustable output needs, the MAX6160 in SOT-143 or SO packages serves as a functional alternative within the series.