BU29UA3WNVX-TL

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

The BU29UA3WNVX-TL is a single-output CMOS Low Dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a fixed output voltage of 2.9 V with a maximum output current of 300 mA. The device operates within an input voltage range of 1.7 V to 5.5 V and features a typical power supply rejection ratio (PSRR) of 70 dB. Key electrical parameters include a quiescent current of 50 µA, a line regulation of 2 mV, and a load regulation of 25 mV. The dropout voltage is specified at 290 mV typically, with a maximum of 400 mV. The component supports surface-mount installation in a DFN-4 package and functions reliably across a temperature range of -40°C to +85°C.

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

• CMOS LDO architecture designed for low quiescent current operation
• Fixed output voltage configuration with high ripple rejection capability
• Compact DFN-4 surface-mount package suitable for space-constrained designs

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

• Portable electronic devices requiring stable low-voltage power supplies
• Battery-powered systems needing efficient linear regulation
• Embedded circuits utilizing 2.9 V logic or reference levels

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

Verify the lifecycle status before procurement, as this component may be marked as Not Recommended for New Designs (NRND). Confirm that the DFN-4 package dimensions match your PCB footprint requirements. Ensure compatibility with the required 2.9 V fixed output and 300 mA current capacity for your specific application circuit. Check for RoHS compliance documentation if environmental regulations apply to your manufacturing process.

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

Select this regulator when a fixed 2.9 V output is required with moderate current demands up to 300 mA. Consider its low quiescent current for battery-operated applications where efficiency is critical. Evaluate the thermal performance based on the expected power dissipation within the DFN-4 package. Compare against adjustable regulators if flexibility in output voltage is needed, noting that this part offers a fixed solution for simplified design.

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

This component belongs to the BUxxUA3WNVX series of LDO regulators from ROHM Semiconductor. These parts are characterized by their CMOS technology, which enables low power consumption. The series includes various fixed output voltages, catering to different digital and analog circuit requirements. The DFN-4 package provides a compact form factor for modern electronics.

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

Check for other members of the BUxxUA3WNVX series with different fixed output voltages if the 2.9 V specification does not meet system needs. Verify availability of alternative LDOs with similar 300 mA output current and DFN-4 packaging. Ensure any substitute maintains comparable PSRR and dropout voltage characteristics.