UCC3803PWTR

DC DC Switching Controllers Overview

The UCC3803PWTR is a low-power 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 100%, with rise and fall times of 41 ns and 44 ns respectively. Operating within a temperature range of 0°C to +70°C, it is housed in an SOIC-8 surface-mount package.

DC DC Switching Controllers Feature Summary

• Implements current-mode PWM control architecture for efficient power management
• Supports multiple converter topologies including Boost, Buck, Flyback, and Forward
• Features high-speed output drivers with specified rise and fall times

DC DC Switching Controllers Applications

• Low-power DC-DC converter designs
• Battery-powered portable equipment
• Adapters and chargers
• Industrial control systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'G4' against the datasheet to confirm lead-free compliance status. Ensure the SOIC-8 package dimensions match the target PCB footprint. Confirm that the operating temperature range meets the application requirements. Check for moisture sensitivity levels if reflow soldering is planned. Validate that the 1 MHz switching frequency aligns with the external component selection.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring low quiescent current and high efficiency in small form factors. The 100% duty cycle capability allows for direct drive applications without minimum on-time constraints. Consider the thermal performance within the SOIC-8 package for heat dissipation needs. Evaluate the compatibility of the current-mode control loop with the intended transformer or inductor design.

DC DC Switching Controllers Part Context

The UCC3803 belongs to the UCC380x series of low-power PWM controllers from Texas Instruments. It is designed for cost-sensitive and space-constrained power supply applications. The device integrates essential control functions into a compact package, reducing the need for external components compared to discrete solutions.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.