UCC2803QDRQ1

Overview

The UCC2803QDRQ1 is a low-power BiCMOS current-mode PWM controller designed for automotive applications. It operates with a switching frequency up to 1 MHz and supports Boost, Flyback, and Forward topologies. The device features a maximum duty cycle of 100 percent and delivers an output drive current of 1 A. It functions within a supply voltage range of 3.6 V to 12 V. The component is qualified to AEC-Q100 standards and operates across a temperature range of -40°C to +125°C. It is housed in an 8-SOIC package.

Feature Summary

• Automotive-grade qualification ensuring reliability under strict environmental conditions
• Current-mode control architecture enabling stable operation across various power stages
• High-frequency switching capability supporting compact magnetic component design
• Integrated high-current driver for efficient gate control of external switches

Applications

• On-board charging systems for electric vehicles
• DC-DC converter modules in automotive infotainment units
• Power management circuits for automotive lighting systems
• Auxiliary power supplies in vehicle telematics modules

Procurement Notes

Verify the specific suffix QDRQ1 confirms AEC-Q100 automotive qualification and SOIC-8 packaging. Confirm RoHS compliance status matches project requirements. Ensure the supplier provides valid traceability documentation for automotive grade components. Check for any recent product change notices affecting pinout or electrical specifications before finalizing orders.

Selection Notes

Select this component when designing isolated or non-isolated converters requiring automotive reliability. The 100 percent duty cycle capability suits applications needing wide input voltage ranges. Consider the 1 MHz switching frequency for minimizing passive component size. Verify that the 1 A drive current meets the gate charge requirements of the selected MOSFETs for the target application.

Part Context

This part belongs to the UCC280x-Q1 family of low-power current-mode PWM controllers. These devices are engineered specifically for automotive environments, offering robust performance where standard industrial parts may fail. The family shares common architectural features while varying in specific electrical limits and packaging options to suit diverse system constraints.

Replacement Considerations

UCC2803QDREP is a military-enhanced variant with similar electrical characteristics but different qualification standards. UCC2803PWTR offers the same core functionality in a TSSOP-8 package instead of SOIC-8. Verify pin compatibility and thermal performance when substituting between package types.