BD3940FP-E2

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The BD3940FP-E2 is a positive fixed linear voltage regulator IC manufactured by ROHM Semiconductor. It provides a single output of 500mA with high precision regulation. The device utilizes low-saturation voltage type P-channel DMOS output transistors to minimize dropout voltage. Key electrical characteristics include a typical super-low dark current of 30 µA and load regulation of 60 mV. It is housed in a TO-252 surface-mount package, suitable for compact electronic designs requiring stable voltage supply.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Utilizes low-saturation voltage type P-channel DMOS output transistors
• Features high precision output voltage regulation
• Designed with super-low dark current specifications

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Automotive electronics applications
• Low-current-consumption device power supplies
• Compact portable electronic equipment

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific datasheet version before procurement, as component specifications may evolve. Confirm that the TO-252 package matches your PCB footprint requirements. Ensure compatibility with your system's thermal management strategy given the 500mA output capability. Check for any RoHS compliance documentation if required by your manufacturing standards.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed positive voltage output is required with minimal dropout voltage. The P-channel DMOS architecture offers efficiency advantages over traditional N-channel LDOs in certain configurations. Consider the 60 mV load regulation for applications demanding stable performance under varying load conditions. The TO-252 package is appropriate for surface-mount assembly processes.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to ROHM's line of linear voltage regulators designed for automotive and industrial use. It differs from switching regulators by offering lower noise and simpler circuit design. The BD3940FP-E2 is distinct from other BD series parts by its specific 500mA current rating and fixed output configuration.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult official ROHM documentation or authorized distributors for verified equivalents.