IR3476MTR1PBF

Voltage Regulators - DC DC Switching Regulators Overview

The IR3476MTR1PBF is a synchronous buck switching regulator IC from Infineon Technologies, part of the SupIRBuck series. It delivers an adjustable output voltage ranging from 0.5V to 12V with a maximum continuous output current of 12A. The device operates with an input voltage range of 3.0V to 27V and supports a fixed switching frequency of 750kHz. Packaged in a compact 16-PowerVQFN (4x5mm) surface-mount enclosure, it integrates internal power MOSFETs for high efficiency.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification with internal high-side and low-side power MOSFETs to maximize conversion efficiency.
• Features a fixed 750kHz switching frequency to minimize external passive component size while maintaining stable regulation.
• Includes comprehensive protection mechanisms such as over-current protection, thermal shutdown, and undervoltage lockout.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load (POL) voltage regulation for industrial equipment
• Power supply stages for telecommunications infrastructure
• Voltage regulation for embedded computing systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MTR1' confirms the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the 'PBF' designation indicates lead-free compliance and RoHS adherence. Ensure the 16-PowerVQFN footprint matches the target PCB layout dimensions precisely before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single-channel, high-current buck solution is required within a 3V to 27V input window. It is suitable for designs prioritizing board space reduction due to its integrated power stage and fixed high-frequency operation. Consider thermal management requirements given the 12A output capability in a small QFN package.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the SupIRBuck family, which combines controller and power stages into a single package. It serves as a direct functional replacement for previous generations of discrete buck solutions, offering improved power density. The IR3476 complements other regulators in the series by providing higher current capacity compared to lower-rated variants.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The IR3475MTR1PBF is a documented alternative within the same product line, offering similar functionality but with a reduced 10A output current rating. Verify that the load requirements do not exceed the 10A limit if substituting with the IR3475 variant.