IRU3048CFTR

Overview

The IRU3048CFTR is a triple-output power management IC from Infineon Technologies, housed in a 16-TSSOP package. It integrates one synchronous buck converter and one low-dropout (LDO) linear regulator to provide three distinct output channels. The device operates with an input voltage range of 4V to 25V and features a fixed switching frequency of 200kHz. One output channel provides a fixed 1.25V supply capable of delivering up to 40mA, while the remaining outputs function as controllers for external regulation stages. The component is designed for surface-mount installation and supports operation within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Integrates a synchronous step-down (buck) converter topology alongside a linear LDO regulator within a single integrated circuit.
• Provides triple-output capability, combining regulated voltage generation with controller interfaces for flexible system design.
• Operates at a fixed 200kHz switching frequency to optimize passive component size and transient response.
• Supports a wide input voltage range from 4V to 25V, accommodating various power supply architectures.

Applications

• Portable electronic devices requiring multiple regulated voltage rails from a single power source
• Industrial control systems utilizing mixed switching and linear regulation topologies
• Embedded computing platforms needing compact power management solutions

Procurement Notes

Verify component authenticity through authorized distribution channels due to obsolete status. Confirm package variant matches project requirements, as suffixes indicate specific housing types such as TSSOP versus SOIC. Check RoHS compliance documentation carefully, as legacy versions may not meet current environmental standards. Ensure storage conditions adhere to moisture sensitivity level guidelines to prevent soldering defects during assembly.

Selection Notes

Select this component when a combined buck and LDO solution is required for space-constrained designs. Evaluate thermal performance under maximum load conditions, as heat dissipation depends on PCB copper area and ambient airflow. Compare input voltage ranges against system power sources to ensure stable operation across all operating modes. Consider the fixed 200kHz frequency impact on inductor selection and electromagnetic interference filtering requirements.

Part Context

This part belongs to the IRU3048 series of power management ICs originally developed by International Rectifier before its acquisition by Infineon Technologies. The series focuses on providing efficient power conversion for applications requiring both high-efficiency switching and low-noise linear regulation. The CFTR suffix specifically denotes the 16-TSSOP package configuration, distinguishing it from other variants like the SOIC housing found in similar model numbers.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints if considering alternative packages within the same family, such as the IRU3048CSTR which utilizes a 16-SOIC housing. Consult manufacturer obsolescence notices for recommended long-term replacement strategies.