MCP1541-I/TO

Overview

The MCP1541-I/TO is a fixed precision voltage reference providing a nominal output of 4.096V. It features an initial accuracy of ±1% and operates within the industrial temperature range of -40°C to +85°C. The device utilizes CMOS circuit design with EPROM trimming for stability. It supports an input voltage range from 4.3V to 5.5V, draws a maximum input current of 120µA across the temperature range, and can source or sink up to 2mA. The component is housed in a 3-lead TO-92 plastic transistor outline package.

Feature Summary

• Provides a stable 4.096V reference using advanced CMOS design and EPROM trimming
• Capable of sourcing and sinking small currents with low output impedance
• Operates over the full industrial temperature range with specified drift limits

Applications

• Battery-powered systems
• Handheld instruments
• Data acquisition systems
• Precision power supplies
• A/D and D/A converters

Procurement Notes

Verify the specific suffix 'I/TO' corresponds to the Industrial temperature range (-40°C to +85°C) and the TO-92 package type. Confirm that the required output voltage matches the 4.096V specification for the MCP1541 variant, distinct from the 2.5V MCP1525. Ensure input voltage conditions meet the minimum dropout requirements for the intended load current.

Selection Notes

Select this component when a fixed 4.096V reference is required in through-hole applications. The TO-92 package is suitable for prototyping or low-volume designs where surface mount space is not constrained. Consider the ±1% initial accuracy and temperature drift specifications against the system's tolerance requirements. Verify that the available input voltage headroom satisfies the device's operating range.

Part Context

This part belongs to the MCP1525/41 family of voltage references manufactured by Microchip Technology. The MCP1541 specifically provides the 4.096V output level, while the MCP1525 provides 2.5V. Both share identical electrical characteristics regarding current consumption, accuracy, and package options, differing only in the trimmed output voltage value.

Replacement Considerations

MCP1541T-I/TT (SOT-23-3 package)

FAQ

What is the minimum input voltage required for the MCP1541?

The minimum input voltage is 4.3V to ensure proper regulation of the 4.096V output.

Is an input capacitor required for operation?

An input capacitor is optional but recommended for added stability and noise reduction if the input voltage is noisy.

What is the maximum load current capability?

The device can source or sink a maximum load current of ±2 mA.