IR3871MTR1PBF

Voltage Regulators - DC DC Switching Regulators Overview

The IR3871MTR1PBF is a synchronous buck switching regulator IC from Infineon Technologies' SupIRBuck series. It provides a single positive adjustable output voltage ranging from 0.5V to 12V with a maximum continuous output current of 8A. The device operates with an input voltage range of 3V to 26V and supports switching frequencies up to 1MHz. Housed in a compact 17-PowerVQFN (5x6mm) surface-mount package, it is designed for high-efficiency DC-DC conversion in space-constrained applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for improved efficiency
• Adjustable output voltage control via external resistors
• Compact PowerVQFN package for dense PCB layouts

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital signal processors
• Power supply stages for memory modules
• Embedded system voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors due to the availability of counterfeits in the market. Confirm that the specific suffix matches the required tape-and-reel packaging configuration. Check for RoHS compliance status if environmental regulations apply to your manufacturing process. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an 8A output capability is sufficient for the load requirements. Consider the 17-PowerVQFN footprint constraints during PCB layout design. Evaluate thermal management needs based on the expected ambient temperature and load conditions within the -40°C to 150°C junction temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SupIRBuck family of integrated power stages. It shares architectural similarities with other models in the series but differs in output current ratings and specific pin configurations. The IR3871 variant specifically targets applications requiring moderate current levels compared to higher-current counterparts like the IR3870.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes may include other 8A synchronous buck regulators from Infineon or compatible manufacturers with similar pinouts and electrical characteristics. Verify compatibility regarding feedback resistor networks and switching frequency settings before implementation.