UCC3961D

DC DC Switching Controllers Overview

The UCC3961D is an advanced primary-side startup controller manufactured by Texas Instruments, designed for single-ended isolated switching power converters utilizing secondary-side PWM control. It operates within a frequency range of 60 kHz to 360 kHz and supports synchronization up to 400 kHz. The device features a maximum duty cycle of 72% and provides a high-current output capability of 1.5 A. It functions within an operating temperature range from 0°C to +70°C and is housed in a SOIC-14 surface-mount package.

DC DC Switching Controllers Feature Summary

• Enables secondary-side PWM control architecture with isolation via pulse transformer
• Provides comprehensive primary-side circuitry including soft-start and UVLO
• Supports multiple overcurrent protection modes such as restart or latch-off

DC DC Switching Controllers Applications

• Single-ended isolated switching power converters
• Systems requiring complex overload condition handling
• Power supplies utilizing secondary-side regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix D indicates the SOIC-14 package variant. Confirm RoHS compliance status through official documentation. Check for End-of-Life notifications as discontinuance information may be available. Ensure moisture sensitivity level requirements are met for storage and handling procedures prior to assembly.

DC DC Switching Controllers Selection Notes

Select this component when implementing secondary-side control strategies to simplify analog feedback loops. It is suitable for designs requiring precise input voltage monitoring during under-voltage or over-voltage conditions. Consider the UCC3960 if a simplified 8-pin solution without advanced startup features is sufficient for the application requirements.

DC DC Switching Controllers Part Context

This part belongs to the UCC3961 series of advanced primary-side controllers. It complements simpler variants like the UCC3960 and UCC2960, which offer reduced functionality in smaller packages. The series supports various packaging options including PDIP and SOIC formats to accommodate different board space constraints.

DC DC Switching Controllers Replacement Considerations

The UCC2961D serves as a related variant within the same family, offering similar control capabilities but potentially differing in temperature range specifications. Verify pin compatibility and electrical parameter alignment before substitution.