BD9141MUV-E2

Overview

The BD9141MUV-E2 is a high-efficiency synchronous step-down switching regulator manufactured by ROHM Semiconductor. It integrates power MOSFETs to deliver a maximum output current of 2 A. The device operates with an input voltage range from 4.5 V to 13.2 V and supports adjustable output voltages. Key electrical parameters include a switching frequency of 1 MHz, a shutdown supply current of 10 µA, and an operating temperature range spanning from -40°C to +105°C. The component utilizes a compact VQFN package for surface mount installation.

Feature Summary

• Integrates internal synchronous rectification power MOSFETs for efficient step-down conversion
• Supports wide input voltage ranges suitable for various bus architectures
• Features low standby current consumption during shutdown mode
• Includes built-in protection mechanisms such as overcurrent and thermal shutdown

Applications

• Portable electronic devices requiring efficient power management
• Industrial control systems utilizing 5V or 12V input rails
• Embedded computing modules needing stable low-voltage regulation
• Consumer electronics with space-constrained PCB layouts

Procurement Notes

Verify the exact ordering code suffix against the manufacturer's latest datasheet to ensure correct packaging and tape/reel specifications. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region. Cross-reference the pinout diagram with your PCB footprint design to prevent mounting errors during assembly.

Selection Notes

Select this component when a 2 A output current capability is required within a 4.5 V to 13.2 V input window. The 1 MHz switching frequency allows for smaller external inductors and capacitors compared to lower-frequency alternatives. Ensure the thermal performance of the VQFN package meets the system's heat dissipation requirements under maximum load conditions.

Part Context

This part belongs to the BD9141 series of DC/DC converters from ROHM Semiconductor. It is categorized under PMIC (Power Management Integrated Circuits) specifically designed for buck converter applications. The series focuses on providing high efficiency and compact solutions for modern portable and industrial electronics.

Replacement Considerations

Consult official cross-reference guides for direct substitutes. Potential alternatives may include other ROHM parts within the BD91xx family or competitors' synchronous buck regulators with matching 2 A current ratings and similar input voltage ranges.