UCC2804PWTR

Overview

The UCC2804PWTR is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments. It operates with a supply voltage range of 8.3V to 12V and features a maximum switching frequency of 1 MHz. The device provides a single output capable of sourcing 1 A of drive current, supporting boost, flyback, and forward topologies. It utilizes an SOIC-8 surface-mount package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Current-mode control architecture for simplified compensation
• Low quiescent current operation for energy efficiency
• Integrated oscillator with external timing resistor
• High peak driver capability for gate drive

Applications

• Battery-powered portable equipment power supplies
• Universal input offline adapters
• DC-to-DC converters using boost or flyback topologies

Procurement Notes

Verify the specific suffix 'PWTR' confirms the TSSOP-8 package and tape-and-reel shipping format. Confirm RoHS compliance status and ensure the operating temperature grade matches the application requirements. Cross-reference the manufacturer part number against the latest datasheet revision to validate pinout and electrical specifications.

Selection Notes

Select this component for applications requiring low standby power consumption in battery-operated devices. The current-mode control simplifies loop compensation compared to voltage-mode alternatives. Ensure the design accommodates the 1 MHz maximum switching frequency and the specific drive current capabilities required for the selected power switch.

Part Context

This part belongs to the UCC280x series of low-power PWM controllers designed for high-efficiency applications. It shares functional similarities with other members like the UCC2804D but differs in packaging and reel configuration. The series targets cost-sensitive, space-constrained designs where low no-load power consumption is critical.

Replacement Considerations

UCC2804DRQ1 is a qualified automotive alternative. UCC2804D offers the same functionality in an SOIC-8 package.