MAX6018BEUR21+T

Overview

The MAX6018BEUR21+T is a precision micropower voltage reference in a SOT23-3 package. It provides a fixed output voltage of 2.048V with an initial accuracy of ±0.4%. The device operates within an input voltage range of 2.25V to 5.5V and consumes a maximum supply current of 5μA at +25°C, increasing to 6μA across the -40°C to +85°C temperature range. It features a low dropout voltage of 200mV at 1mA load, a temperature drift coefficient of 50ppm/°C (max), and supports continuous short-circuit conditions.

Feature Summary

• Ultra-low quiescent supply current that remains virtually independent of input voltage variations
• Low-dropout architecture enabling operation from inputs as low as VOUT plus 200mV
• Three-terminal series configuration eliminating the need for external resistors

Applications

• Two-cell alkaline battery monitoring systems
• Battery-operated equipment
• Hand-held devices
• Data-acquisition systems
• Industrial and process-control systems

Procurement Notes

Verify the specific suffix 'EUR' indicates the SOT23-3 surface-mount package variant. Confirm the '+T' designation corresponds to tape-and-reel packaging rather than cut tape or Digi-Reel options. Ensure the component meets RoHS compliance standards required for the target assembly process. Cross-reference the manufacturer's ordering guide to validate the exact part number against current production status.

Selection Notes

Select this component when a stable 2.048V reference is required with minimal power consumption. The B-grade accuracy suits applications tolerating up to 0.4% initial deviation. Consider the 50ppm/°C drift for environments with significant thermal fluctuations. Verify that the 1mA sourcing capability meets the downstream circuit requirements without exceeding the stability limits defined by the capacitive load specifications.

Part Context

This device belongs to the MAX6018 family of precision bandgap voltage references manufactured by Analog Devices / Maxim Integrated. The family includes variants with different output voltages (1.2V, 1.6V, 1.8V) and accuracy grades (A-grade ±0.2%, B-grade ±0.4%). All members share the same compact three-pin SOT23 footprint and micropower operational characteristics designed for space-constrained portable electronics.

Replacement Considerations

Direct substitutes include MAX6018AEUR21+T for higher accuracy or other MAX6018B variants with different fixed output voltages such as 1.2V, 1.6V, or 1.8V.