UCC3817APW

Overview

The UCC3817APW is a BiCMOS power factor preregulator designed for average current mode control. It operates with a switching frequency range of 6 kHz to 220 kHz and features a 16-pin TSSOP package. The device integrates an oscillator, error amplifier, multiplier, and PWM comparator. It supports input voltages up to 400 V and includes protection features such as overvoltage lockout and thermal shutdown. The component is optimized for low power dissipation and reduced startup current.

Feature Summary

• Implements average current mode control for high-performance power factor correction
• Integrates essential analog blocks including multiplier and PWM comparator
• Features low start-up current and reduced power dissipation capabilities

Applications

• PC Power Supplies
• Consumer Electronics
• Lighting Systems
• Industrial Power Supplies
• IEC6100-3-2 Compliant Supplies Less Than 300 W

Procurement Notes

Verify the specific suffix 'PW' confirms the TSSOP-16 package variant when ordering. Confirm RoHS compliance status through the official datasheet revision history. Ensure the design accounts for the specified operating temperature range. Validate that the application voltage does not exceed the absolute maximum ratings defined in the electrical characteristics table.

Selection Notes

Select this component for applications requiring IEC6100-3-2 compliance under 300 W. It is suitable for systems needing average current mode PFC without external discrete components. Consider the TSSOP-16 package for space-constrained PCB layouts. Evaluate the 6 kHz to 220 kHz frequency range against EMI requirements.

Part Context

This part belongs to the UCCx81xA series of BiCMOS power factor preregulators from Texas Instruments. The series is engineered to provide efficient power factor correction in compact designs. It serves as a primary stage in multi-stage power supply architectures.

Replacement Considerations

The UCC3817DWTR is a pin-compatible alternative in a SOIC-16 package. Verify package dimensions and thermal performance differences before substitution.