IR3891MTR1PBF

Voltage Regulators - DC DC Switching Regulators Overview

The IR3891MTR1PBF is a dual-output synchronous buck regulator from Infineon Technologies' SupIRBuck series. It operates with an input voltage range of 1 V to 21 V and provides two adjustable output channels, each capable of delivering up to 4 A. The outputs are adjustable from 500 mV to 18 V. The device supports switching frequencies between 300 kHz and 1.5 MHz. It functions within a junction temperature range of -40°C to +125°C and is housed in a 31-PowerVFQFN package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual independent output channels for simultaneous power rail generation
• Integrated synchronous rectification for high conversion efficiency
• Programmable switching frequency to optimize external component size
• Built-in protection mechanisms including thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital signal processors
• Power distribution networks in embedded systems
• Voltage regulation for memory modules and FPGA cores

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix MTR1PBF against official Infineon documentation to confirm the tape and reel packaging configuration. Ensure compatibility with the required operating temperature range and pinout assignments before integration. Cross-reference the datasheet revision history for any updates to electrical characteristics or recommended circuit designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated rails are required from a single input source. The 4 A per channel rating suits moderate current loads. Consider the 31-pin package footprint for PCB layout constraints. Evaluate the need for external synchronization if operating near sensitive analog circuits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SupIRBuck family, which integrates power switches and control logic into a compact module. It replaces discrete solutions by reducing component count and board space. The series focuses on high efficiency and low noise for demanding digital applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check the IR3892MTRPBF for higher current capacity at 6 A per channel. Review the IR3895MTR1PBF for single-channel applications requiring up to 16 A. Verify pin-to-pin compatibility and thermal performance before substitution.