MCP1501T-20E/CHY

Overview

The MCP1501T-20E/CHY is a buffered voltage reference from Microchip Technology featuring a nominal output of 2.048 V with an initial accuracy of ±0.1%. It operates within a supply voltage range of 2.25 V to 5.5 V and delivers up to 20 mA of load current. The device exhibits a maximum temperature coefficient of 50 ppm/°C across the -40°C to +125°C operating range, alongside a typical quiescent current of 140 μA. Packaged in a 6-lead SOT-23, it includes a shutdown pin for power management.

Feature Summary

• Integrated chopper-based amplifier architecture minimizes low-frequency noise and reduces temperature-dependent offsets.
• Capable of sourcing and sinking 20 mA of load current while maintaining stable regulation.
• Features a digital shutdown input that actively disables the output to conserve power.
• Utilizes curvature-compensated bandgap technology for high precision and low drift.

Applications

• Precision data acquisition systems
• High-resolution analog-to-digital converters
• Medical equipment applications
• Industrial control circuits
• Battery-powered devices

Procurement Notes

Verify the specific suffix CHY against official datasheets to confirm package type and tape-and-reel specifications. Ensure the ordering code matches the required automotive qualification status if applicable. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when a fixed 2.048 V reference with moderate current drive is required. The SOT-23-6 package suits space-constrained designs. Verify that the minimum supply voltage of 2.25 V aligns with the system's available rail. Consider the 50 ppm/°C drift specification against environmental temperature variations during the design phase.

Part Context

This device belongs to the MCP1501 family of high-precision buffered voltage references. The series offers multiple voltage options ranging from 1.024 V to 5.000 V. The T suffix indicates reel packaging, while CHY denotes the specific 6-lead SOT-23 package configuration used for surface-mount assembly.

Replacement Considerations

The MCP1501T-20E/SN serves as a direct functional replacement using an 8-lead SOIC package. For higher precision requirements, the MCP1502 provides buffered performance with lower drift characteristics. Verify pin compatibility and thermal resistance differences when substituting packages.

FAQ

How does the MCP1501 handle capacitive loads?

The device can drive up to 10 nF of capacitive load without series resistance. Larger capacitors require a series resistor to maintain stability, as detailed in the transient response graphs.

What is the function of the SHDN pin?

The SHDN (Shutdown) pin is an active-low digital input that places the device into a low-power state, disabling the output driver and reducing supply current significantly.