BD9A300MUV-E2

Overview

The BD9A300MUV-E2 is a synchronous buck DC-DC converter manufactured by ROHM Semiconductor. It integrates an N-channel power MOSFET and operates within an input voltage range of 2.7 V to 5.5 V. The device provides a single adjustable output voltage from 800 mV to 3.85 V with a maximum output current of 3 A. Key electrical specifications include a fixed switching frequency of 1 MHz, a typical quiescent current of 10 uA, and a shutdown feature for low-power applications. It functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-efficiency N-channel power MOSFET within a compact package to minimize external component count.
• Features a fixed 1 MHz switching frequency to support the use of small inductors and capacitors.
• Includes a shutdown pin to significantly reduce standby current consumption during inactive periods.

Applications

• Portable electronic devices requiring efficient power management from battery sources
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries
• Industrial control modules operating within standard automotive or commercial temperature ranges

Procurement Notes

Verify the complete part number including the suffix to ensure correct packaging and RoHS compliance status. Confirm that the required output voltage range aligns with the specified 800 mV to 3.85 V limit. Check for availability of the dedicated evaluation board BD9A300MUV-EVK-001 if design validation is required. Ensure sourcing channels provide genuine components with traceable documentation.

Selection Notes

Select this component when a 3 A output capability is needed from a 2.7 V to 5.5 V input source. The integrated MOSFET simplifies layout compared to discrete solutions. Consider the 1 MHz frequency for balancing efficiency and passive size. Verify thermal performance requirements given the VQFN package size and potential load conditions.

Part Context

This device belongs to the BD9A series of single synchronous buck converters from ROHM. It shares the VQFNV3030-EP-16 package form factor with other members like the BD9A100 and BD9A400. The series is designed for portable applications where space constraints and power efficiency are critical priorities.

Replacement Considerations

Check ROHM datasheets for BD9A100MUV-E2 (1 A) or BD9A400MUV-E2 (4 A) as functional alternatives within the same family. Verify pin compatibility and thermal characteristics before substitution.