UCC3808N-1

AC DC Converters, Offline Switchers Overview

The UCC3808N-1 is a low-power current-mode push-pull PWM controller manufactured by Texas Instruments. It operates within an input voltage range of 9 V to 13 V, with a nominal supply of 10 V. The device supports switching frequencies up to 1 MHz and provides two outputs with a maximum duty cycle of 50%. It features programmable slope compensation and includes under-voltage lockout (UVLO) for reliable startup. Designed for through-hole mounting in an 8-PDIP package, it functions efficiently across temperatures from 0°C to +70°C.

AC DC Converters, Offline Switchers Feature Summary

• Implements current-mode control architecture for enhanced transient response and simplified loop compensation.
• Integrates programmable slope compensation to ensure stability during high-duty-cycle operation.
• Includes built-in under-voltage lockout circuitry to prevent erratic behavior during power-up and brown-out conditions.

AC DC Converters, Offline Switchers Applications

• Push-pull DC-DC converter designs
• Half-bridge power supplies
• Full-bridge power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'N-1' against the official Texas Instruments datasheet to confirm pinout compatibility and electrical specifications. Ensure the selected component matches the required operating temperature range and package type for your PCB layout. Cross-reference the manufacturer's latest documentation to confirm current production status and availability constraints before finalizing procurement plans.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring low quiescent current and precise current-mode control in push-pull topologies. Consider the 8-PDIP package for prototyping or applications where through-hole assembly is preferred. Evaluate the 1 MHz switching frequency capability against transformer size requirements and electromagnetic interference constraints relative to alternative controllers in the UCCx808 family.

AC DC Converters, Offline Switchers Part Context

The UCC3808 series represents a line of low-power PWM controllers designed for isolated power conversion. This specific part utilizes a bipolar process technology optimized for cost-effective performance in consumer and industrial power supplies. It serves as a foundational component for designing efficient flyback, forward, and bridge converters where moderate power levels and simple control loops are sufficient.

AC DC Converters, Offline Switchers Replacement Considerations

The UCC2808A-1 is a documented automotive-grade replacement offering extended temperature ranges and enhanced reliability standards. Verify that the pinout remains compatible and that the increased robustness aligns with the target application's environmental requirements.