BU34UA3WNVX-TL

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

The BU34UA3WNVX-TL is a CMOS Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a fixed positive output voltage of 3.4 V with a maximum output current capability of 300 mA. The device operates within an input voltage range of 1.7 V to 5.5 V and features a typical dropout voltage of 200 mV at full load. It offers high power supply rejection ratio (PSRR) of 70 dB and maintains a quiescent current of 50 uA. The unit ensures voltage regulation accuracy of 1% and includes thermal protection. It is housed in a compact DFN-4 surface-mount package suitable for space-constrained applications.

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

• Fixed 3.4 V output voltage with 300 mA current capacity
• Low dropout performance with 200 mV typical voltage drop
• High PSRR of 70 dB for effective noise suppression
• Compact DFN-4 SMD package design

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

• Portable electronic devices requiring stable low-voltage rails
• Battery-powered systems needing efficient linear regulation
• Embedded circuits utilizing CMOS LDO regulators
• General-purpose power management ICs in consumer electronics

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

Verify the component status as NRND (Not Recommended for New Designs) before procurement. Confirm that the DFN-4 package matches your PCB footprint requirements. Ensure input voltage does not exceed 5.5 V to prevent damage. Check thermal dissipation capabilities given the 560 mW power dissipation rating. Validate RoHS compliance details through official documentation prior to integration.

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

Select this regulator when a fixed 3.4 V output is required with moderate current demands up to 300 mA. Consider its low quiescent current of 50 uA for battery-sensitive designs. The DFN-4 package is ideal for applications prioritizing small form factors. Ensure the input voltage range of 1.7 V to 5.5 V aligns with your system's power supply constraints.

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

This component belongs to the BUxxUA3WNVX series of single-output LDO regulators from ROHM Semiconductor. It shares architectural similarities with other variants like BU12UA3WNVX-TL and BU25UA3WNVX-TL, differing primarily in fixed output voltage settings. The series utilizes CMOS technology for low power consumption and is designed for portable applications requiring reliable voltage regulation in compact packages.

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

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the NRND status, alternative components should be evaluated based on matching electrical specifications such as output voltage, current capacity, and package type.