IR3863MTRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The IR3863MTRPBF is a synchronous buck switching regulator IC from Infineon Technologies, part of the SupIRBuck series. It features an adjustable output voltage range from 0.5V to 12V and supports a maximum output current of 6A. The device operates with an input voltage between 3V and 21V and utilizes a fixed switching frequency up to 750kHz. Housed in a compact 17-PowerVQFN package (4x5 mm), it is designed for surface mount installation and functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side power MOSFETs with a control circuit for synchronous rectification.
• Utilizes Constant On-Time (COT) architecture to achieve fast transient response without requiring external compensation components.
• Includes comprehensive protection mechanisms such as over-current protection, thermal shutdown, and undervoltage lockout.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for data processing systems
• Telecommunications infrastructure power distribution
• Industrial equipment power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific moisture sensitivity level handling requirements during storage and assembly. Ensure the ordering suffix matches the required tape and reel configuration for automated placement processes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for moderate current applications up to 6A. The wide input voltage range suits various bus voltages. Consider the fixed frequency operation and COT control method for design simplicity. Evaluate thermal performance based on the small footprint and expected load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SupIRBuck family of integrated power modules. These devices combine controller logic and power stages into a single package to reduce board space. The IR3863 specifically targets applications requiring efficient step-down conversion in a minimal outline package compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public documentation indicates that the IR3863MTRPBF is obsolete. Designers should evaluate alternative parts from the same manufacturer's portfolio that offer similar electrical specifications and pin compatibility to ensure supply continuity.