MAX6035AAUR50+T

Overview

The MAX6035AAUR50+T is a high-voltage, precision micropower voltage reference manufactured by Analog Devices. It provides a fixed output voltage of 5.0V with an initial accuracy of ±0.2% and a maximum temperature coefficient of 25ppm/°C over the -40°C to +85°C range. The device operates within a supply voltage range up to 33V and draws a typical quiescent current of 73µA. It features a three-terminal architecture in a compact SOT-23-3 package, capable of sourcing 10mA or sinking 2mA of load current without requiring external compensation capacitors.

Feature Summary

• Proprietary curvature-correction circuit combined with laser-trimmed thin-film resistors ensures low temperature drift and high initial accuracy.
• Series-mode topology eliminates the need for external biasing resistors and allows supply current to remain virtually independent of input voltage.
• Internally compensated design removes the requirement for external frequency-stabilization capacitors while maintaining stability with capacitive loads up to 5µF.

Applications

• Li-ion Battery Chargers
• 12-Bit A/D and D/A Converters
• Digital Multimeters
• Portable Data-Acquisition Systems

Procurement Notes

Verify that the ordering suffix matches the required performance grade, as the 'A' designation specifies the tighter accuracy and temperature coefficient limits compared to the 'B' variant. Confirm the '+T' suffix indicates tape-and-reel packaging if automated assembly is intended. Ensure the component meets RoHS compliance requirements for the specific manufacturing batch.

Selection Notes

Select this part when a fixed 5.0V reference is needed in space-constrained designs utilizing the SOT-23-3 footprint. It serves as a direct upgrade for legacy REF02 and REF43 devices, offering significantly lower power consumption and reduced board area. Suitable for battery-operated systems where ultra-low quiescent current and wide input voltage tolerance are critical.

Part Context

This component belongs to the MAX6035 family of high-supply-voltage precision voltage references. The family includes variants with different output voltages (2.5V, 3.0V, 5.0V) and accuracy grades ('A' and 'B'). The AAUR50 variant specifically denotes the highest accuracy grade with a 5.0V output in the surface-mount SOT-23-3 package.

Replacement Considerations

MAX6035BAUR50+T

FAQ

Does the MAX6035AAUR50 require an external capacitor for stability?

No, the device is internally compensated and does not require an external capacitor for frequency stability, though it remains stable with capacitive loads up to 5µF.

How does the supply current behave relative to the input voltage?

The quiescent supply current is virtually independent of the supply voltage, varying by only 0.7µA/V maximum across the operating range.