MAX9051AEUT+T

Overview

The MAX9051AEUT+T is a micropower, single-supply analog comparator integrated with a precision voltage reference. It operates within a supply voltage range of 2.7V to 5.5V and consumes only 40µA of quiescent supply current. The device features rail-to-rail inputs and outputs, with an input common-mode voltage range extending 250mV beyond the supply rails. It provides a fixed 2.500V reference output and includes internal ±3mV hysteresis for clean switching. The component is housed in a 6-pin SOT-23 package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates a single low-power comparator with a precision 2.500V voltage reference in a compact footprint.
• Features rail-to-rail input and output stages capable of sinking and sourcing up to 8mA.
• Includes internal ±3mV hysteresis to ensure stable output transitions with slow-moving signals.
• Utilizes a unique output stage design that minimizes supply current surges during switching.

Applications

• Precision battery management systems
• Window comparator circuits
• IR receivers
• Level translators

Procurement Notes

Verify the specific suffix 'EUT' corresponds to the 6-pin SOT-23 package and '+T' indicates tape-and-reel packaging. Confirm the 'A' grade designation ensures 0.4% initial accuracy for the integrated reference. Check for RoHS compliance status as indicated by the '+' symbol. Ensure the supply voltage requirements align with the 2.7V minimum specification before integration.

Selection Notes

Select this component when a single-supply operation between 2.7V and 5.5V is required alongside a precise voltage reference. It is suitable for battery-operated systems due to its 40µA low power consumption. Choose this part over dual-comparator variants if only one comparison channel is needed. Consider the rail-to-rail input capability for applications where signals may exceed or drop below the supply rails.

Part Context

This device belongs to the MAX9038–MAX9053 family of micropower comparators with integrated references. It shares architectural similarities with the MAX9050 series but differs in its specific reference voltage output. The MAX9051 variant specifically provides a 2.500V reference, distinguishing it from the 2.048V reference found in the MAX9041.

Replacement Considerations

The MAX9051BEUT+T serves as a direct functional replacement with B-grade reference accuracy (1%). Other family members like the MAX9050AEUK+T offer similar performance but differ in package type and reference voltage.