BD3941HFP-TR

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

The BD3941HFP-TR is a linear voltage regulator IC from Rohm Semiconductor, featuring a fixed positive output of 5.0V and a maximum output current of 500mA. It utilizes the HRP-5 package and supports an input voltage range of 4.5V to 15V. The device operates within an extended temperature range of -40°C to 125°C and offers a high breakdown voltage of 36V. Designed for automotive applications, it ensures stable regulation compatible with onboard vehicle microcontrollers.

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

• High breakdown voltage capability of 36V for robust operation
• Fixed 5.0V output with 500mA current capacity
• Automotive-grade reliability for vehicle microcontroller compatibility

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

• Onboard vehicle microcontroller power supply
• Automotive electronic systems requiring stable 5V logic levels
• General purpose linear regulation in harsh environments

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

Verify the exact part number suffix against official Rohm documentation to confirm tape-and-reel packaging specifications. Ensure the component meets RoHS compliance requirements if mandated by your assembly process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit sources. Confirm that the HRP-5 package footprint matches your PCB design constraints before finalizing procurement orders.

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

Select this component when a fixed 5V output is required for automotive microcontrollers. The 36V breakdown voltage allows for direct connection to higher voltage automotive rails without additional protection circuits. Consider the 500mA current limit for load requirements. The wide operating temperature range suits under-hood or exterior automotive locations where thermal stability is critical for consistent performance.

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

This part belongs to the BD3941HFP series of LDO regulators designed specifically for automotive use. The series emphasizes high voltage tolerance and reliability in noisy electrical environments typical of vehicles. The TR suffix indicates a specific packaging format, typically tape and reel, suitable for automated surface-mount assembly processes in high-volume manufacturing lines.

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

The BD450S5FP2-CE2 is listed as a possible replacement. Verify pinout compatibility and electrical parameters such as dropout voltage and quiescent current before substitution. Ensure the alternative part meets the same automotive qualification standards and package dimensions to maintain board integrity.