MAX6035ESA25+

Overview

The MAX6035ESA25+ is a high-voltage, precision micropower voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed 2.5V output with an initial accuracy of ±0.2% and a maximum temperature coefficient of 40ppm/°C over the -40°C to +85°C range. The device operates from a supply voltage up to 33V, drawing a typical quiescent current of 73µA. It features a proprietary curvature-correction circuit and laser-trimmed thin-film resistors. Packaged in an 8-pin SOIC, it can source 10mA or sink 2mA of load current without requiring external compensation capacitors.

Feature Summary

• Proprietary temperature coefficient curvature-correction circuit for enhanced stability
• Laser-trimmed thin-film resistors ensure high initial accuracy
• Internally compensated design eliminates need for external compensation capacitors
• Supply-independent operation maintains efficiency across wide input voltage ranges

Applications

• 4mA to 20mA Industrial Control Loops
• Li+ Battery Chargers
• 12-Bit A/D and D/A Converters
• Digital Multimeters
• Portable Data-Acquisition Systems

Procurement Notes

Verify the specific suffix 'ESA' indicates the 8-pin SO package and industrial temperature range (-40°C to +85°C), distinct from the SOT-23 automotive variants. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure input voltage remains within specified limits to prevent exceeding absolute maximum ratings during operation.

Selection Notes

Select this component when an 8-pin SO package is required instead of the smaller SOT-23 form factor. Choose the ESA variant for industrial temperature applications where a 40ppm/°C temperature coefficient meets system requirements. Consider the higher dropout voltage compared to lower-voltage references when designing for minimal headroom scenarios.

Part Context

The MAX6035 series serves as a high-performance upgrade for legacy industry-standard devices like the REF02 and REF43. It offers significantly reduced power consumption and a more compact footprint while maintaining precision. The family includes options for 2.5V, 3.0V, and 5.0V outputs in both SOT-23 and SO packages.

Replacement Considerations

Direct replacements include other MAX6035 variants such as MAX6035AAUR25-T for SOT-23 packaging or MAX6035BAUR25-T for relaxed accuracy specifications. Legacy equivalents like the REF02 or REF43 may require external components and larger board space.