BH31FB1WG-TR

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

The BH31FB1WG-TR is a low-dropout (LDO) voltage regulator manufactured by ROHM Semiconductor, designed for fixed output applications. It provides a nominal output voltage of 3.1 V with a maximum output current capability of 150 mA. The device operates within an input voltage range of 2.5 V to 5.5 V and features a maximum dropout voltage of 450 mV. It offers high precision with a voltage regulation accuracy of 1%. The regulator supports line regulation of 20 mV and load regulation of 10 mV. Power dissipation is rated at 540 mW. It is housed in an SSOP-5 surface-mount package and functions across a temperature range from -40°C to +85°C.

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

• CMOS-based LDO architecture for efficient power management
• Fixed 3.1 V output with 1% regulation accuracy
• Low dropout characteristic of 450 mV maximum
• Single positive output configuration

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

• Battery-powered portable electronic devices
• Embedded systems requiring stable 3.1 V logic levels
• Microcontroller power supply circuits
• Sensor interface power conditioning

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

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Check the lifecycle status, as this part may be marked as Not Recommended for New Designs (NRND). Ensure the SSOP-5 package variant matches the specific ordering suffix requirements for tape-and-reel delivery.

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

Select this component when a precise 3.1 V fixed output is required with moderate current demands up to 150 mA. Consider the 2.5 V minimum input voltage constraint for battery applications. Evaluate thermal performance against the 540 mW power dissipation limit in the SSOP-5 package. Compare line and load regulation specifications against system sensitivity requirements.

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

This LDO belongs to ROHM's CMOS series regulator family, optimized for low-power applications. It complements other fixed-voltage regulators in the portfolio, such as those with different output voltages or higher current capabilities. The SSOP-5 package allows for compact PCB layouts in space-constrained designs.

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

Check for pin-compatible alternatives with similar voltage and current ratings if this part is discontinued. Verify that substitute components meet the same electrical specifications and package dimensions.