UCC2818ADR

Overview

The UCC2818ADR is a BiCMOS power factor preregulator manufactured by Texas Instruments, designed for average current mode control. It operates within a switching frequency range of 6 kHz to 220 kHz and features a 150 µA startup current. The device is housed in a 16-SOIC package with a width of 3.90 mm. It supports a supply voltage of 12 V to 17 V and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Implements average current mode control for high power factor and low current distortion
• Integrates essential protection mechanisms including overvoltage protection and soft-start functionality
• Provides integrated PWM control and current sensing to reduce external component count

Applications

• AC-DC power supplies
• LED drivers
• Industrial control boards

Procurement Notes

Verify the specific suffix 'ADR' against the official datasheet to confirm the commercial temperature grade (-40°C to +85°C) and SOIC-16 packaging. Ensure compatibility with existing PCB footprints and validate that the 12 V to 17 V supply range meets system requirements before finalizing procurement.

Selection Notes

Select this component for designs requiring integrated PFC and PWM control in a compact form factor. It is suitable for applications where reducing bill-of-materials complexity is prioritized. Verify that the target power level aligns with the controller's capabilities and that the operating temperature range matches the environmental conditions.

Part Context

This part belongs to the UCC2818A series of power factor correction controllers. It serves as a specialized solution for AC-DC front-end applications, offering a consolidated approach to power management. The device integrates multiple functions typically found in discrete solutions, streamlining the design process for power electronics engineers.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.