IRU3073CQTR

Overview

The IRU3073CQTR is a synchronous step-down and linear voltage regulator controller manufactured by Infineon Technologies. It integrates a PWM controller with an LDO for efficient power conversion and accurate voltage regulation. The device operates within a switching frequency range of 210 kHz to 400 kHz. It features low-noise performance, low dropout characteristics, and a miniaturized design suitable for space-constrained applications.

Feature Summary

• Integrates synchronous step-down PWM control with an LDO for combined efficiency and precision
• Provides low-noise operation to support sensitive analog loads
• Features low dropout voltage for improved efficiency under varying input conditions

Applications

• Portable electronic devices requiring compact power solutions
• Systems needing simultaneous regulated rails from a single source
• Noise-sensitive analog circuits in consumer electronics

Procurement Notes

Verify component status before procurement as the IRU3073CQTR is classified as obsolete by the manufacturer. Confirm availability through authorized distributors or secondary markets if required for legacy system maintenance. Ensure compatibility with existing board designs due to the QSOP package format.

Selection Notes

Select this component for designs requiring integrated switching and linear regulation in a small footprint. Consider the 210 kHz to 400 kHz switching frequency range when designing external passive components. Evaluate thermal management requirements based on the specific load currents and ambient operating conditions.

Part Context

This part belongs to the PMIC category under Voltage Regulators - Linear + Switching. It was originally developed by International Rectifier, which is now part of Infineon Technologies. The device combines multiple power stages into a single integrated circuit to reduce board space and simplify power architecture.

Replacement Considerations

As the part is obsolete, identify equivalent controllers from current Infineon portfolios or other manufacturers offering similar synchronous buck-LDO integration. Verify pinout compatibility and electrical specifications to ensure seamless replacement in existing hardware designs.