MAX6145EUR-T

Overview

The MAX6145EUR-T is a low-dropout, micropower three-terminal voltage reference providing a fixed 4.5V output. It operates within a supply voltage range of 4.7V to 12.6V and features an initial accuracy of ±1%. The device exhibits a typical temperature coefficient of 15ppm/°C, guaranteed under 50ppm/°C. Quiescent supply current is approximately 79µA at +25°C, rising to 130µA across the full operating temperature range. It is housed in a 3-pin SOT-23 package and supports operation from -40°C to +85°C.

Feature Summary

• Low dropout voltage capability suitable for 3V and 5V systems
• Micropower consumption with supply current independent of input voltage variations
• Stable operation with capacitive loads up to 10nF without external components

Applications

• Battery-powered systems
• Portable and hand-held equipment
• Data-acquisition systems
• Instrumentation and process control

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and RoHS compliance status. Ensure that the component matches the required thermal performance specifications for the intended application environment. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when a fixed 4.5V precision reference is required in space-constrained designs. The SOT-23-3 package offers a compact footprint ideal for portable applications. Consider the maximum load regulation and line regulation parameters if driving high-current or varying-load downstream circuits.

Part Context

This device belongs to the MAX61xx family of low-cost, low-dropout voltage references manufactured by Analog Devices Inc./Maxim Integrated. The family includes variants with different fixed output voltages (2.5V, 4.096V, 5.0V) and one adjustable version. All members share similar micropower characteristics and are designed for battery-operated electronics requiring stable voltage rails.

Replacement Considerations

Compatible substitutes within the same family include MAX6125EUR-T (2.5V), MAX6141EUR-T (4.096V), and MAX6150EUR-T (5.0V). These parts share identical pinouts and packaging but provide different preset output voltages.