BD9B500MUV-E2

Overview

The BD9B500MUV-E2 is a single synchronous buck DC/DC converter manufactured by ROHM Semiconductor. It integrates low on-resistance power MOSFETs to deliver a maximum output current of 5 A. The device operates with an input voltage range of 2.7 V to 5.5 V and provides an adjustable output voltage from 800 mV to 4.4 V. It utilizes constant on-time control architecture, supporting switching frequencies up to 2 MHz. Key electrical specifications include a quiescent current of 10 µA and operation within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates low on-resistance power MOSFETs for high-efficiency synchronous rectification
• Employs constant on-time control architecture to ensure fast transient response performance
• Supports deep standby low-power consumption modes during light load conditions
• Includes comprehensive protection mechanisms such as over-current, short-circuit, and thermal shutdown

Applications

• Portable electronic devices requiring reduced standby power consumption
• Embedded systems utilizing small inductors enabled by high-frequency operation
• General-purpose power management for single-rail logic loads

Procurement Notes

Verify the specific suffix E2 against the official datasheet to confirm compliance with RoHS directives and lead-free manufacturing standards. Confirm that the VQFN3030-EP-16 package matches the thermal requirements of the target application. Ensure the design avoids automotive use cases, as the manufacturer explicitly states this standard-grade product is not recommended for车载 equipment.

Selection Notes

Select this component when a 5 A output capability is required within a compact VQFN3030 footprint. It is suitable for designs needing fast transient response without external compensation networks due to the constant on-time topology. Consider the 2.7 V minimum input voltage constraint when designing for battery-powered applications. Verify that the 800 mV minimum output voltage aligns with the load requirements.

Part Context

This part belongs to the BD9B series of integrated synchronous buck converters from ROHM Semiconductor. The series focuses on combining controller and power FETs to minimize solution size. The BD9B500MUV-E2 specifically targets the 5 A current segment, sharing architectural similarities with lower current variants like the BD9B100 and BD9B300 while offering higher power density through its integrated MOSFET design.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the official ROHM database for cross-reference information or evaluate other members of the BD9B series based on specific current and package requirements.