BU11UA3WNVX-TL

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

The BU11UA3WNVX-TL is a fixed positive CMOS LDO regulator from ROHM Semiconductor, housed in a DFN-4 (SSON004X1010) package. It provides a fixed 1.1 V output with a maximum current 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 470 mV. Key electrical parameters include a quiescent current of 50 uA, line regulation of 2 mV, load regulation of 25 mV, and a typical PSRR of 70 dB. It supports an operating temperature range from -40°C to +85°C.

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

• Fixed 1.1 V output voltage for stable logic power supply applications
• Low quiescent current consumption of 50 uA for energy efficiency
• High ripple rejection ratio of 70 dB for noise-sensitive circuits
• Integrated thermal shutdown and overcurrent protection for reliability

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

• Power supply for portable electronic devices
• Logic IC power sources
• Camera module power supplies
• RF circuit power supplies

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

Verify the NRND status before integration, as this component is not recommended for new designs. Confirm the DFN-4 package compatibility with your PCB footprint. Ensure input voltage does not exceed 5.5 V to prevent damage. Check RoHS compliance documentation for regulatory requirements. Validate thermal performance under maximum load conditions.

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

Select this part when a fixed 1.1 V rail is required with moderate current needs up to 300 mA. Consider the small SSON004X1010 package for space-constrained layouts. Compare quiescent current against other LDOs if battery life is critical. Verify that the 70 dB PSRR meets your noise sensitivity requirements. Ensure the operating temperature range covers your application environment.

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

This component belongs to the BUxxUA3WNVX series of low-dropout regulators. It is designed for portable equipment requiring efficient power management. The series offers various fixed output voltages to suit different logic families. The DFN-4 package provides a compact solution for modern electronics. ROHM Semiconductor manufactures these parts for general-purpose power management.

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

Check for BU11UA3WNVX without the suffix if available. Verify pinout compatibility with existing designs. Confirm equivalent electrical specifications for direct substitution.