BD9131MUV-E2

Overview

The BD9131MUV-E2 is a single-channel synchronous buck converter manufactured by ROHM Semiconductor. It operates with an input voltage range of 2.7 V to 5.5 V and delivers up to 3 A of output current. The adjustable output voltage spans from 800 mV to 2.5 V. The device utilizes a fixed switching frequency of 1 MHz and features a typical quiescent supply current of 250 uA. It is housed in a VQFNV4040-EP-20 surface-mount package and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• Integrates power MOSFETs and controller for compact design
• Employs current-mode PWM control for fast transient response
• Includes SLLM technology for high efficiency across load ranges

Applications

• Portable electronic devices requiring low voltage regulation
• Embedded systems with limited power budgets
• Industrial equipment needing reliable step-down conversion

Procurement Notes

Verify the component status before integration, as this part may be marked as Not Recommended for New Designs (NRND). Confirm that the VQFNV4040-EP-20 package dimensions align with your PCB layout constraints. Ensure that the thermal performance meets your system requirements given the synchronous buck topology. Check for updated datasheets to confirm any revisions to electrical characteristics or pin assignments prior to finalizing the bill of materials.

Selection Notes

Select this component when a single output channel is sufficient for the application. It is suitable for designs requiring an input voltage between 2.7 V and 5.5 V. Consider this part if the maximum load current does not exceed 3 A. The 1 MHz switching frequency allows for smaller external inductors compared to lower-frequency alternatives. Verify that the required output voltage falls within the 800 mV to 2.5 V adjustable range.

Part Context

This device belongs to the BD9131MUV series of synchronous buck converters. It shares the VQFNV4040-EP-20 package form factor with other members of the family, such as the BD9137MUV-E2. While it offers similar packaging and control architectures, it differs in output current capacity and voltage ranges. It serves as a specialized solution for applications prioritizing moderate current delivery within a compact footprint.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.