UCC3808ADTR-1

AC DC Converters, Offline Switchers Overview

The UCC3808ADTR-1 is a low-power current-mode push-pull PWM controller manufactured by Texas Instruments. It operates within an extended temperature range of -40°C to +85°C and utilizes an 8-SOIC surface-mount package. The device supports Boost, Buck, Full Bridge, Half Bridge, and Push-Pull topologies with a maximum switching frequency of 1 MHz. It features two outputs capable of delivering 1 A drive current at a maximum voltage of 12.5 V. The controller limits the duty cycle to a maximum of 50% and exhibits rise and fall times of 25 ns.

AC DC Converters, Offline Switchers Feature Summary

• Implements current-mode control architecture for efficient power management in low-power applications.
• Provides dual output drivers designed for driving external power switches in various converter topologies.
• Integrates internal circuitry to limit maximum duty cycle, ensuring stable operation under varying load conditions.

AC DC Converters, Offline Switchers Applications

• Low-power DC-DC converters utilizing push-pull topology
• Buck and boost converter designs requiring current-mode control
• Half-bridge and full-bridge isolated power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify that the component matches the specific suffix 'A' which denotes the extended industrial temperature range of -40°C to +85°C. Confirm the 'DTR' designation corresponds to the SOIC-8 tape and reel packaging format required for automated assembly processes. Ensure compatibility with the intended switching frequency and drive current requirements of the target power stage design.

AC DC Converters, Offline Switchers Selection Notes

Select this component when designing systems requiring a balance between performance and power consumption. The device is suitable for applications where space constraints favor the compact SOIC-8 package. Consider its suitability for topologies such as push-pull or half-bridge where dual complementary outputs are necessary. Evaluate the 1 MHz switching capability against electromagnetic interference constraints and magnetic component sizing requirements.

AC DC Converters, Offline Switchers Part Context

This part belongs to the UCC3808A family of low-power current-mode PWM controllers. It shares functional similarities with other variants like the UCC3808ADTR-2, differing primarily in temperature rating and specific electrical characteristics. The series is designed to offer cost-effective solutions for consumer electronics and industrial power supplies requiring reliable switching control.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitutes include UCC3808ADTR-2 and UCC3808APWTR-2G4. Verify pinout compatibility and ensure the alternative meets the specific thermal and electrical requirements of the existing design before implementation.