BH31FB1WHFV-TR

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

The BH31FB1WHFV-TR is a fixed-output CMOS Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a stable 3.1 V output with a maximum continuous current of 150 mA. The device operates within an input voltage range of 2.5 V to 5.5 V and supports a maximum withstand voltage of 6.5 V. Key electrical parameters include a maximum dropout voltage of 450 mV at 100 mA, a line regulation of 20 mV, and a load regulation of 10 mV. The quiescent circuit current is typically low, supporting energy-efficient designs. The component is housed in a compact SSOP-5 surface-mount package.

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

• CMOS LDO architecture for low power consumption
• Integrated overcurrent and thermal shutdown protection
• Fixed 3.1 V output voltage with high accuracy
• Compact SSOP-5 surface-mount packaging

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

• Portable battery-powered electronic devices
• Embedded systems requiring stable low-voltage rails
• Consumer electronics with space-constrained PCB layouts
• General-purpose linear voltage regulation circuits

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

Verify the specific suffix 'WHFV' against official ROHM documentation to confirm pinout and package dimensions. Confirm RoHS compliance status through certified datasheets. Check for End-of-Life (EOL) or Not Recommended for New Designs (NRND) status prior to procurement. Ensure supply chain sources provide valid traceability and authenticity guarantees.

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

Select this component when a fixed 3.1 V rail is required with moderate current demands up to 150 mA. Consider the 450 mV dropout voltage relative to the minimum input voltage to ensure regulation under all load conditions. Evaluate the SSOP-5 package size against available PCB footprint constraints. Compare thermal performance requirements against the expected power dissipation in the application environment.

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

This part belongs to the ROHM BH series of CMOS LDO regulators, designed for portable applications. It shares architectural similarities with other fixed-output variants in the family, differing primarily in output voltage and package options. The series emphasizes low quiescent current and robust protection features suitable for consumer electronics.

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

Officially documented substitutes include BU31TD3WG-TR. Verify compatibility regarding output voltage, current rating, and package type before substitution.