IR3821AMTRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The IR3821AMTRPBF is a synchronous step-down DC-DC converter from Infineon Technologies, designed for powering low-voltage devices in harsh environments. It integrates high-side and low-side power MOSFETs with a control circuit to deliver up to 9A of output current. The device operates with a switching frequency of 300kHz and supports positive output configuration. It functions within an operating junction temperature range of -40°C to 125°C. This component is categorized under Voltage Regulators - DC DC Switching Regulators and is currently listed as obsolete by the manufacturer.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification with high-side and low-side power MOSFETs for efficient power conversion.
• Engineered for reliable operation in harsh environmental conditions.
• Features a fixed switching frequency to simplify external component selection.

Voltage Regulators - DC DC Switching Regulators Applications

• Powering low-voltage digital logic circuits
• Industrial equipment power supplies
• Harsh environment electronic systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component status carefully as this part is marked obsolete. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing PCB footprints and thermal management requirements. Check for end-of-life notices from Infineon Technologies before finalizing design-in decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component only if its 9A current capability and 300kHz switching frequency align with system requirements. Consider the negative temperature coefficient for thermal performance. Evaluate alternative active parts due to obsolete status. Verify package compatibility and ensure adequate heat dissipation for the PQFN-8 footprint.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to Infineon's PMIC portfolio, specifically within the DC-DC switching regulators category. It serves as a compact solution for point-of-load applications requiring moderate current levels. The integration of power stages reduces board space compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

As the IR3821AMTRPBF is obsolete, consult Infineon's official documentation for recommended active replacements. Verify pinout compatibility and electrical parameter equivalence before substitution. No specific substitute part numbers are confirmed in the provided source data.