MAX6129BEUK50-T

Overview

The MAX6129BEUK50-T is an ultra-low-power series voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 5V with an initial accuracy of ±1%. The device features a maximum temperature coefficient of 100 ppm/°C and operates within a supply voltage range of 2.5V to 12.6V. It supports a maximum load current of 4mA and exhibits a dropout voltage of 200mV. Packaged in a compact SOT-23-5 surface-mount format, it draws a maximum supply current of 5.25µA. The component functions across a temperature range from -40°C to +85°C.

Feature Summary

• Ultra-low power consumption suitable for battery-operated systems
• Low dropout voltage enabling operation with minimal headroom
• Compact SOT-23-5 package reduces board space requirements

Applications

• Battery-powered instrumentation
• Portable measurement devices
• Precision analog circuits requiring stable reference voltages

Procurement Notes

Verify the specific suffix and manufacturer designation carefully during procurement. Confirm that the component matches the exact electrical specifications required for your design, particularly regarding output voltage tolerance and temperature drift. Ensure compatibility with the intended operating environment and check for any end-of-life status or obsolescence notices from the manufacturer before finalizing orders.

Selection Notes

Select this component when a fixed 5V reference is required with strict power constraints. Consider the ±1% initial accuracy and 100 ppm/°C drift if high precision is not critical. Evaluate the SOT-23-5 footprint against available board space. Compare against other MAX6129 variants if different output voltages or tighter accuracy specifications are needed for the application.

Part Context

This part belongs to the MAX6129 family of micropower, low-dropout bandgap voltage references. The series combines ultra-low supply current with low drift in a miniature package. The BEUK50 variant specifically denotes the 5V output version within the B-grade accuracy bin. It is designed to replace larger packages while maintaining performance in space-constrained designs.

Replacement Considerations

Direct substitutes include other MAX6129 variants with different output voltages such as MAX6129AEUK33+T (3.3V) or MAX6129BEUK30+T (3V). Cross-reference pinouts and thermal characteristics when substituting. Verify that alternative components meet the same supply voltage and load current requirements.