UCC2803PWTR

Overview

The UCC2803PWTR is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments. It supports Boost, Flyback, and Forward topologies with a switching frequency of 1 MHz. The device operates within a supply voltage range of 3.6V to 12V and delivers an output current of 1 A. It features a maximum duty cycle of 100%, rise time of 41 ns, and fall time of 44 ns. Operating temperatures span from -40°C to +85°C. The component is housed in a TSSOP-8 surface-mount package.

Feature Summary

• Implements current-mode pulse width modulation control for efficient power regulation
• Supports multiple converter topologies including boost, flyback, and forward configurations
• Features high-speed switching capabilities with nanosecond-level transition times

Applications

• Low-power switched-mode power supplies
• Battery-powered equipment requiring efficient energy management
• Adapters and chargers utilizing flyback or forward architectures

Procurement Notes

Verify the specific suffix 'PWTR' confirms the TSSOP-8 surface-mount package and tape-and-reel delivery format. Confirm RoHS compliance status and humidity sensitivity classification prior to integration. Ensure the ordering part number matches the required operational temperature range and pinout configuration for the target PCB design.

Selection Notes

Select this component for designs requiring low quiescent current and high-frequency operation in compact form factors. The TSSOP-8 package suits space-constrained applications. Evaluate thermal performance requirements against the specified operating temperature range. Consider the 1 MHz switching frequency for passive component size reduction compared to lower-frequency alternatives.

Part Context

This part belongs to the UCC2803 series of low-power BiCMOS current-mode PWM controllers. It is functionally related to other devices in the family such as the UCC2803N (PDIP variant) and UCC2803PW (tube variant). The series is designed for general-purpose power management applications where efficiency and component count are critical constraints.

Replacement Considerations

Direct substitutes include UCC2803N and UCC2803PW. Verify package compatibility when replacing through-hole variants with surface-mount versions. Ensure electrical parameters match for equivalent performance.