UCC2803DTR

Overview

The UCC2803DTR is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments. It supports Boost, 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. Maximum duty cycle is rated at 100%. Electrical characteristics include a fall time of 44 ns and a rise time of 41 ns. It functions within a temperature range of -40°C to +85°C. The component is housed in an SOIC-8 surface-mount package.

Feature Summary

• Implements low-power BiCMOS current-mode PWM control architecture
• Supports versatile power conversion topologies including Boost, Flyback, and Forward
• Features high-speed switching capability with nanosecond transition times

Applications

• High-frequency DC-DC converter designs
• Flyback power supply implementations
• Forward converter applications

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with required operating temperatures and input voltage ranges for the target application. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status.

Selection Notes

Select this component for applications requiring low quiescent current and high switching frequencies up to 1 MHz. The SOIC-8 package suits space-constrained surface-mount designs. Confirm that the 100% maximum duty cycle requirement aligns with the intended topology and load conditions during system design.

Part Context

This device belongs to the UCC2803 series of low-power current-mode PWM controllers from Texas Instruments. It is designed for efficient power management in compact electronic systems. The series emphasizes reduced power consumption while maintaining robust performance across standard industrial temperature ranges.

Replacement Considerations

Consult official substitution guides for verified alternatives such as UCC2803PW or UCC2803N if pinout compatibility is required. Verify electrical parameters match before replacing.