UCC391PW

Overview

The UCC391PW is a series voltage reference integrated circuit manufactured by Unitrode. It features an adjustable output voltage range spanning from 1.3V to 3.5V with a high precision tolerance of ±0.39%. The device operates with a quiescent current of 150 µA and is housed in an 8-TSSOP surface-mount package.

Feature Summary

• Provides stable, adjustable reference voltage within the specified range
• Ensures high accuracy with tight initial tolerance specification
• Designed for low power consumption applications

Applications

• Precision measurement systems requiring stable reference voltages
• Data acquisition circuits needing accurate analog references
• Calibration equipment utilizing adjustable voltage standards

Procurement Notes

Verify the manufacturer designation as Unitrode or Texas Instruments HiRel, as legacy branding may vary. Confirm the specific suffix indicates the 8-TSSOP package and commercial temperature range. Ensure the part status is active, as older Unitrode inventory may be subject to end-of-life notices or replacement by TI equivalents.

Selection Notes

Select this component when a precise, adjustable voltage reference is required with minimal quiescent current draw. The ±0.39% tolerance makes it suitable for applications demanding high accuracy without the complexity of external trimming networks. Consider the 8-TSSOP package constraints for PCB layout and thermal management requirements.

Part Context

This component belongs to the Unitrode line of power management and signal conditioning devices. Unitrode was acquired by Texas Instruments, and these parts are often categorized under TI's HiRel or legacy portfolios. The UCC391 series represents specialized voltage reference solutions designed for industrial and commercial environments.

Replacement Considerations

Check for Texas Instruments equivalents such as the REF series if Unitrode stock is unavailable. Verify pin compatibility and electrical specifications before substituting. Note that some Unitrode products have been discontinued; consult official EOL notices for valid cross-references.