BU31TA2WHFV-TR

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

The BU31TA2WHFV-TR is a single-output, positive fixed CMOS LDO regulator from ROHM Semiconductor. It provides a 3.1 V output with a maximum current of 200 mA. The device features a typical dropout voltage of 330 mV at full load and a quiescent circuit current of 40 µA. It offers a typical ripple rejection ratio of 65 dB. Operating within an input voltage range of 2.5 V to 5.5 V, it supports a junction temperature range from -40 °C to +85 °C. The unit is housed in a compact HVSOF-5 package.

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

• Ultra-low power consumption with a circuit current of only 40 µA.
• High noise performance with a typical ripple rejection of 65 dB.
• Integrated protection mechanisms including thermal shutdown, over-current protection, and discharge function.
• Compact surface-mount design suitable for space-constrained applications.

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

• Power supply for logic ICs
• Power supply for RF circuits
• Power supply for camera modules

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

Verify the specific suffix WHFV against the official datasheet to confirm the HVSOF-5 package type and tape-and-reel packaging configuration. Ensure the required output voltage accuracy of ±1.0% meets system requirements. Confirm that the application environment remains within the specified -40 °C to +85 °C operating temperature range. Check for RoHS compliance documentation if required by procurement standards.

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

Select this component when a low-noise, low-quiescent current regulator is needed for sensitive analog or RF sections. The 3.1 V fixed output suits systems requiring precise voltage levels without external resistors. Consider the HVSOF-5 package for board space optimization. Ensure the load current does not exceed 200 mA and that the input voltage stays between 2.5 V and 5.5 V for proper regulation.

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

This part belongs to the BU**TA2 series of high-performance full CMOS regulators. The series is characterized by ultra-small packages such as SSON004X1216 and HVSOF5. These devices are designed for low power consumption and excellent noise characteristics, targeting portable electronic devices and modular applications where size and efficiency are critical constraints.

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

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative LDOs based on pinout, voltage, and current specifications using official manufacturer cross-reference tools.