MAX6138BEXR50+T

Overview

The MAX6138BEXR50+T is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 5.0V with an initial accuracy of 0.2% (Grade B). The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 25ppm/°C. It utilizes a subminiature 3-pin SC70 surface-mount package.

Feature Summary

• Ultra-small 3-pin SC70 package for space-critical applications
• Laser-trimmed resistors ensure precise initial accuracy
• Stable operation without requiring external stabilizing capacitors
• Capable of maintaining stable reverse breakdown voltage over wide operating currents

Applications

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

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and RoHS compliance status. Ensure the selected grade matches the required initial accuracy specifications for the design. Cross-reference the manufacturer's part number with authorized distributor listings to validate authenticity and current production status before procurement.

Selection Notes

Select this component when a compact footprint is required alongside high-precision voltage referencing. The 5.0V output is suitable for systems needing a stable reference near standard logic levels. Consider the 60μA minimum operating current requirement to ensure proper regulation under all load conditions.

Part Context

This device belongs to the MAX6138 family of shunt voltage references, which are designed as alternatives to larger SOT23 packages while offering higher precision than standard Zener diodes. The family includes multiple fixed voltage options and accuracy grades, utilizing BiCMOS technology for low dynamic impedance and stability.

Replacement Considerations

MAX6138BEXR50-T

FAQ

Does the MAX6138 require an external capacitor for stability?

No, the MAX6138 does not require an external stabilizing capacitor and is stable with any capacitive load.

What is the function of Pin 3 on the SC70 package?

Pin 3 is designated as No Connection (N.C.) and must be left floating or connected to Pin 2.