MAX6138BEXR25+T

Overview

The MAX6138BEXR25+T is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown output voltage of 2.5V with an initial accuracy of 0.2%. The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 25ppm/°C. It supports a wide operating current range from 60μA to 15mA and utilizes a subminiature 3-pin SC70 surface-mount package.

Feature Summary

• Ultra-small 3-pin SC70 surface-mount package
• Laser-trimmed resistors for precise initial accuracy
• Low dynamic impedance ensuring stable reverse breakdown voltage
• No external stabilizing capacitor required

Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process control

Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the ordering suffix matches the specific accuracy grade and packaging requirements. Ensure compliance with RoHS standards as indicated in the datasheet documentation before final procurement decisions are made.

Selection Notes

Select this component when space constraints require a compact footprint compared to SOT23 packages. Choose based on the required initial accuracy grade and the specific 2.5V output voltage. Ensure the design accommodates the minimum operating current and maximum shunt current limits for proper regulation across the specified temperature range.

Part Context

This part belongs to the MAX6138 family of precision shunt voltage references. The family offers multiple fixed reverse breakdown voltages including 1.2205V, 2.048V, 3.0V, 3.3V, 4.096V, and 5.0V. Variants are available in different accuracy grades ranging from 0.1% to 0.5%, all sharing the same compact SC70 package and low-noise characteristics.

Replacement Considerations

The LM4040/LM4050 series is mentioned as a comparable device but requires a larger SOT23 package. Verify pinout compatibility and thermal dissipation requirements when substituting with other shunt references.