MCP1501T-25E/RW

Overview

The MCP1501T-25E/RW is a buffered voltage reference with a fixed output of 2.5V and an initial accuracy of ±0.1%. It operates within an input voltage range of 2.7V to 5.5V and provides a maximum load current of ±20mA. The device features a typical operating current of 140μA and a temperature coefficient of 50ppm/°C across the -40°C to +125°C range. It utilizes chopper-based amplifiers for low drift and is housed in an 8-WDFN package.

Feature Summary

• Chopper-based amplifier architecture reduces temperature-dependent offsets and improves long-term stability
• Capable of sourcing and sinking up to 20mA of load current
• Includes a digital shutdown pin for active power management

Applications

• Precision data acquisition systems
• High-resolution data converters
• Medical equipment applications
• Industrial controls
• Battery-powered devices

Procurement Notes

Verify that the ordering suffix 'RW' corresponds to the WDFN-8 tape and reel packaging configuration. Confirm the specific voltage variant matches the required 2.5V output level. Ensure the component meets RoHS compliance requirements for your manufacturing process. Cross-reference the datasheet revision to confirm electrical characteristics remain consistent with your design specifications.

Selection Notes

Select this part when a stable, buffered reference is needed for moderate load currents. The WDFN package offers a compact footprint suitable for space-constrained designs. Verify that the minimum input voltage requirement of 2.7V aligns with your system's supply rails. Consider the thermal resistance of the exposed pad if high load currents are expected.

Part Context

This component belongs to the MCP1501 family of high-precision buffered voltage references from Microchip Technology. The family includes multiple voltage options ranging from 1.024V to 5.000V. The T suffix indicates tape and reel packaging, while RW specifies the 8-WDFN package type. The series is designed for applications requiring low noise and high accuracy.

Replacement Considerations

MCP1501-25E/SN: SOIC-8 package version with identical electrical performance.

FAQ

How does the feedback pin function on the WDFN package?

On the WDFN package, the FEEDBACK pin must be connected to the OUT pin at the device. This allows the feedback loop to compensate for any IR-drop caused by PCB trace impedance between the device and the load.

What is the purpose of the SHDN pin?

The SHDN (Shutdown) pin is a digital input that places the device into a low-power shutdown mode when driven low. The device must be fully powered up before using this feature.