BD9D300MUV-E2

Overview

The BD9D300MUV-E2 is a single synchronous buck DC/DC converter manufactured by ROHM Semiconductor. It operates with an input voltage range of 4.0 V to 17 V and delivers up to 3 A of output current. The adjustable output voltage spans from 0.9 V to 5.25 V. Integrated into the package are low on-resistance power MOSFETs, supporting a switching frequency of up to 1.25 MHz. The device functions within an ambient temperature range of -40°C to +85°C and utilizes a 16-pin VQFN (VQFNV3030-EP) surface-mount package.

Feature Summary

• Integrates high-side and low-side power MOSFETs with low on-resistance for efficient step-down conversion.
• Employs proprietary on-time control architecture to maintain stable operation across varying load conditions.
• Features light load mode control to minimize power consumption during standby or low-demand periods.
• Includes comprehensive protection mechanisms such as over-current, short-circuit, thermal shutdown, and under-voltage lockout.

Applications

• Portable electronic devices requiring efficient power management
• Industrial equipment with moderate power demands
• Communication infrastructure components
• Battery-powered systems needing extended operational life

Procurement Notes

Verify the specific suffix E2 indicates RoHS compliance and lead-free status according to manufacturer documentation. Confirm the package variant matches the required PCB footprint, specifically the VQFNV3030-EP-16 configuration. Ensure design compatibility with the specified input voltage window of 4.0 V to 17 V before integration. Check for any automotive qualification restrictions if intended for vehicle-mounted applications.

Selection Notes

Select this component when a compact solution is needed for converting higher voltages down to lower logic or battery levels. The integrated MOSFETs simplify bill of materials compared to discrete designs. Consider the 1.25 MHz switching frequency for smaller external inductor requirements. Evaluate thermal performance based on the exposed pad heat dissipation capabilities of the VQFN package.

Part Context

This part belongs to the BD9x series of switching voltage regulators from ROHM Semiconductor. These ICs are designed for general-purpose power management in portable and industrial electronics. The series emphasizes high efficiency and small form factors through integrated power stages and high-frequency operation capabilities.

Replacement Considerations

Consult official substitution lists for direct replacements. Verify pin compatibility and electrical specifications against alternative models in the same product family.