UC3854QG3

Overview

The UC3854QG3 is a high power factor preregulator controller manufactured by Texas Instruments. It utilizes a 20-pin LCC package and operates with a supply voltage range of 15V to 35V, featuring an undervoltage lockout threshold of 16V. The device supports a startup current of 1.5mA and is designed for power factor correction applications.

Feature Summary

• Integrated control circuitry for high power factor preregulation
• Undervoltage lockout protection for stable operation

Applications

• Power factor correction systems
• High power factor preregulators

Procurement Notes

Verify component status as the UC3854QG3 is listed as obsolete and no longer manufactured. Confirm availability of substitute parts such as the UC3854DW if replacement is required. Ensure sourcing channels provide valid documentation for this discontinued item.

Selection Notes

Select alternative components from the same family, such as the UC3854DW, due to the obsolescence of the UC3854QG3. Evaluate pin compatibility and electrical specifications to ensure seamless integration into existing designs requiring power factor correction capabilities.

Part Context

This component belongs to the UC3854 series of power factor correction controllers. It is part of Texas Instruments' portfolio for managing power quality in electronic systems. The specific QG3 variant denotes a 20-pin LCC package configuration within this product line.

Replacement Considerations

The UC3854DW is identified as an available substitute for the obsolete UC3854QG3. Verify functional equivalence before implementation.