111-4189PBF

Overview

The Infineon Technologies 111-4189PBF is a synchronous buck switching regulator IC from the SupIRBuck series. It features an input voltage range of 1.2 V to 21 V and delivers a continuous output current of 6 A. The device supports positive adjustable output voltages between 0.5 V and 18.38 V. Operating with a switching frequency between 400 kHz and 1.5 MHz, it utilizes a 34-PowerVFQFN package for surface mount installation.

Feature Summary

• Integrated synchronous rectification for improved efficiency
• Wide input voltage compatibility supporting diverse power sources
• Adjustable output voltage capability for flexible system design

Applications

• Point-of-load regulation in industrial equipment
• Power supply stages for embedded computing systems
• Voltage conversion for communication infrastructure modules

Procurement Notes

Verify the specific datasheet revision and ordering suffixes to ensure compatibility with your design requirements. Confirm that the 34-PowerVFQFN footprint matches your PCB layout exactly. Check for moisture sensitivity levels and reflow soldering profile recommendations during the procurement process to maintain component integrity.

Selection Notes

Select this component when a compact solution with high current density is required. Ensure the thermal management strategy accommodates the PowerVFQFN package characteristics. Verify that the desired output voltage falls within the specified 0.5 V to 18.38 V range and that the load current does not exceed 6 A under all operating conditions.

Part Context

This part belongs to the SupIRBuck family, which integrates power switches and control circuitry into a single module. This integration reduces the external component count and simplifies the design process compared to discrete solutions. The series is designed for applications requiring high efficiency and small form factors.

Replacement Considerations

Consult official Infineon documentation for direct pin-to-pin replacements or functional equivalents within the SupIRBuck portfolio. Verify that any substitute maintains the same input voltage range, output current capacity, and package dimensions to ensure seamless integration without redesigning the printed circuit board.