UCC3818DTRG4

Overview

The UCC3818DTRG4 is a power factor controller manufactured by Texas Instruments, designed for average current mode control. It operates within a switching frequency range of 6 kHz to 220 kHz and supports a maximum duty cycle of 99 percent. The device functions with a supply voltage between 12 V and 17 V, drawing a typical start-up current of 150 µA. It is housed in a 16-SOIC surface-mount package with a width of 3.90 mm. The component is rated for operation across an ambient temperature range of 0°C to 70°C and complies with RoHS3 specifications.

Feature Summary

• Implements average current mode control architecture for power factor correction applications
• Supports high maximum duty cycle capability up to ninety-nine percent
• Features low start-up current consumption of one hundred fifty microamperes

Applications

• Power factor correction circuits utilizing average current mode control
• Switching power supplies operating within the specified frequency range
• Electronic equipment requiring compliance with power quality standards

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm that the specific ordering suffix corresponds to tape and reel packaging requirements. Ensure that the procurement documentation explicitly states compliance with RoHS3 directives. Validate that the received units match the 16-SOIC physical dimensions and pin configuration. Cross-reference the manufacturer part number against official obsolescence notices to confirm availability status.

Selection Notes

Select this component when average current mode control is required for power factor correction designs. Consider the 6 kHz to 220 kHz switching frequency range for application compatibility. Evaluate the 12 V to 17 V supply voltage constraints against the system power architecture. Assess the 16-SOIC package dimensions for PCB layout integration. Verify thermal performance requirements against the 0°C to 70°C operating temperature specification.

Part Context

The UCC3818DTRG4 belongs to the UCC3818 series of power factor controllers from Texas Instruments. This series utilizes BiCMOS technology for efficient operation. The device is part of the broader portfolio of power management integrated circuits designed for improving electrical power utilization. It shares functional similarities with other members of the UCC3817/18 family while offering specific packaging and trailing suffix variations.

Replacement Considerations

The UCC3818DTR is identified as a manufacturer-recommended alternative. The UCC3818D serves as a similar option. For TSSOP package variants, the UCC28180DR is listed as a recommended substitute.