UCC3804PWTR

AC DC Converters, Offline Switchers Overview

The UCC3804PWTR is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments. It operates within a supply voltage range of 8.3V to 12V and supports switching frequencies up to 1 MHz. The device features a maximum duty cycle of 50% and includes an integrated oscillator with trim capability. It provides a 1A peak output drive current and incorporates adjustable under-voltage lockout with hysteresis. The component is housed in a TSSOP-16 package and is designed for use in various DC/DC converter topologies.

AC DC Converters, Offline Switchers Feature Summary

• Current-mode control architecture for simplified compensation
• Integrated oscillator with frequency trim capability
• Adjustable under-voltage lockout with built-in hysteresis
• High peak output drive current capability

AC DC Converters, Offline Switchers Applications

• Buck converters
• Boost converters
• Flyback converters
• Forward converters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'PWTR' corresponds to the TSSOP-16 package and tape-and-reel packaging configuration. Confirm that the ordering part number matches the exact pinout and thermal characteristics required for the target PCB layout. Ensure compatibility with the intended operating temperature range and voltage specifications before finalizing procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring low quiescent current and high-frequency operation in single-output applications. It is suitable for space-constrained systems utilizing surface-mount technology. Consider the 50% maximum duty cycle limitation when designing for wide input-to-output voltage ratios or specific transformer turns ratios in isolated topologies.

AC DC Converters, Offline Switchers Part Context

This part belongs to the UCC380x series of low-power BiCMOS current-mode PWM controllers. It shares functional similarities with other members like the UCC3804N and UCC3804D, differing primarily in package type and reel packaging. The series is widely used in general-purpose power supplies where efficiency and component count are critical design factors.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitutes include UCC3804DWTR (SOIC-8) and UCC3804N (PDIP-8). Verify pin compatibility and thermal performance when transitioning between package types. Cross-reference with UC3804 variants if legacy support is required, noting potential differences in electrical specifications.