BD3931HFP-TR

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

The BD3931HFP-TR is a positive fixed-output Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a fixed 5 V output with a maximum continuous current of 500 mA. The device features a typical quiescent current of 30 uA and operates within an input voltage range supporting high-voltage applications. Key electrical parameters include a typical Power Supply Rejection Ratio (PSRR) of 55 dB, a maximum dropout voltage of 1.1 V, and line/load regulation of 10 mV and 20 mV respectively. It is housed in an HRP-5 surface-mount package and supports an operating temperature range from -40°C to +125°C.

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

• High voltage operation capability with low quiescent current consumption
• Fixed 5 V output with 500 mA load capacity
• Automotive-grade reliability with extended temperature range support

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

• Automotive electronic systems requiring stable 5 V power rails
• Battery-powered devices needing efficient linear regulation
• Industrial control modules utilizing high-voltage input sources

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

Verify the specific suffix 'HFP-TR' against the official ROHM datasheet to confirm the tape-and-reel packaging configuration and pinout compatibility. Ensure the application circuit accounts for the thermal dissipation limits specified in the datasheet, particularly regarding the maximum power dissipation of 1.2 W. Cross-reference the RoHS compliance status and REACH regulations as required by your regional manufacturing standards before finalizing procurement orders.

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

Select this component when a fixed 5 V output is required with moderate current demands up to 500 mA. It is suitable for designs where input voltages exceed the output significantly, leveraging its low dropout characteristics. Consider the HRP-5 package size for space-constrained PCB layouts. Verify that the thermal environment allows for adequate heat dissipation given the 1.2 W power dissipation rating under worst-case conditions.

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

This part belongs to ROHM's LDO Voltage Regulator family, specifically designed for automotive and industrial applications. It falls under the PMIC (Power Management IC) category. The BD3931 series is characterized by high voltage tolerance and low standby current, making it distinct from standard low-voltage LDOs. The 'TR' suffix indicates reel packaging for automated assembly.

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

Publicly confirmed substitute part numbers are not available in the provided source data. Consult the official ROHM replacement guide or contact the manufacturer directly for qualified alternatives.