UCC3813PW-4G4

AC DC Converters, Offline Switchers Overview

The UCC3813PW-4G4 is a low-power economy BiCMOS current-mode PWM controller manufactured by Texas Instruments. It supports boost, buck, flyback, and forward topologies with a single output. The device operates at a switching frequency of 1 MHz and delivers an output current of 1 A. It features a maximum duty cycle of 50% and includes a fall time of 44 ns. The component is housed in an 8-pin TSSOP package for surface mount installation. It functions within a temperature range of 0°C to +70°C.

AC DC Converters, Offline Switchers Feature Summary

• Implements current-mode pulse width modulation control for efficient power conversion
• Supports multiple converter topologies including boost, buck, flyback, and forward configurations
• Designed for low-power applications using economy BiCMOS technology

AC DC Converters, Offline Switchers Applications

• Boost converter designs
• Buck converter implementations
• Flyback power supply circuits
• Forward converter systems

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix '4' against official Texas Instruments documentation to confirm functional parameters, as variants within the UCC3813 family may differ in duty cycle limits or pinout configurations. Ensure the TSSOP-8 package matches the target PCB footprint. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement specifications.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring high-frequency operation up to 1 MHz with moderate output current capabilities. The 50% maximum duty cycle constraint makes it suitable for specific step-up or isolated topologies where higher duty cycles are not required. Evaluate thermal performance within the specified operating temperature range and ensure compatibility with the intended switching topology constraints.

AC DC Converters, Offline Switchers Part Context

This part belongs to the UCC3813 series of switching controllers from Texas Instruments. The series utilizes BiCMOS technology to balance performance and power consumption. Variants such as the UCC3813DTR-4G4 share similar electrical characteristics but differ in packaging, such as SOIC-8 versus TSSOP-8. The UCC3813 family is designed for general-purpose DC-DC conversion needs.

AC DC Converters, Offline Switchers Replacement Considerations

Publicly confirmed substitute part numbers for UCC3813PW-4G4 were not identified in the provided source material. Verify cross-references directly with Texas Instruments engineering support or updated distributor databases for potential equivalents.