BH31RB1WGUT-E2

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

The BH31RB1WGUT-E2 is a CMOS LDO voltage regulator manufactured by ROHM Semiconductor, providing a fixed 3.1 V output with a maximum load current of 150 mA. It operates within an input voltage range up to 5.5 V and features a typical dropout voltage of 100 mV. The device offers high power supply rejection ratio (PSRR) of 63 dB and maintains a line regulation of 2 mV and load regulation of 4 mV. It functions reliably across an operating temperature range from -40°C to +85°C. The component is housed in a compact VCSP60N1-4 surface-mount package.

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

• Delivers highly stable precision output voltage with ±1% accuracy
• Features ultra-low quiescent current for extended battery life
• Provides high ripple rejection performance for clean power delivery

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

• Portable electronic devices requiring low noise power supplies
• Battery-operated systems needing efficient linear regulation
• Embedded circuits utilizing CMOS logic families

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

Verify the specific output voltage variant required, as the BH31RB1WGUT series includes multiple fixed voltage options such as 3.0 V, 3.1 V, and 3.3 V. Confirm that the VCSP60N1-4 package footprint matches the design layout. Check for end-of-life status or recommended new design alternatives if long-term availability is critical for the production timeline.

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

Select this component when a fixed 3.1 V rail is needed with minimal board space constraints. Ensure the input voltage does not exceed 5.5 V and thermal dissipation remains within the 530 mW limit. Consider the 150 mA current capability against peak load demands. Verify compatibility with the target PCB thermal pad requirements for adequate heat sinking.

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

This part belongs to the BH□□RB1WGUT series of 150 mA CMOS regulators designed for portable applications. It shares the same VCSP60N1-4 package and general electrical characteristics with other variants in the family, differing primarily in the fixed output voltage setting. The series emphasizes low power consumption and small form factor integration.

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

Direct substitutes include other BH3xRB1WGUT-E2 variants with different fixed voltages if the voltage level can be adjusted. Cross-reference with similar 150 mA LDOs in VCSP60N1-4 packages from other manufacturers, ensuring pinout compatibility and matching electrical specifications.