IR3859MTR1PBF

Voltage Regulators - DC DC Switching Regulators Overview

The IR3859MTR1PBF is a synchronous step-down switching regulator from Infineon Technologies, designed for high-efficiency power conversion in compact form factors. It operates with an input voltage range of 1.5V to 21V and supports adjustable output voltages from 0.7V up to 0.9 times the input voltage. The device integrates Fast Constant On-Time control technology to ensure rapid transient response and stable operation under varying load conditions. With a maximum output current capability exceeding typical requirements for mid-range processing loads, it utilizes a 16-PowerQFN package suitable for surface-mount assembly.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates Fast Constant On-Time control architecture for enhanced dynamic performance
• Features wide input voltage tolerance supporting diverse system power rails
• Delivers high peak efficiency levels across broad operating ranges

Voltage Regulators - DC DC Switching Regulators Applications

• Data processing systems requiring efficient point-of-load regulation
• Industrial equipment power distribution networks
• Communication infrastructure power management modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment prior to integration. Ensure compliance with RoHS standards and check for specific material content declarations if required by your manufacturing environment. Validate that the received part matches the exact suffix designation to avoid functional discrepancies.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Evaluate thermal dissipation requirements based on the target load current and ambient temperature conditions. Consider the external inductor selection carefully to optimize efficiency and minimize ripple effects. Ensure the control loop compensation network is tuned appropriately for the specific output capacitance used in the design to maintain stability during transient events.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the SupIRBuck series, which focuses on integrating high-side and low-side MOSFETs with the controller logic. This integration reduces the overall solution size compared to discrete designs. The series targets applications where space constraints and power density are critical factors in the system architecture.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Official documentation indicates this product is obsolete. Review alternative package types or newer generations within the same family for direct pin-compatible replacements. Verify electrical specifications match the original design requirements before substitution.