BU10UA3WNVX-TL

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

The BU10UA3WNVX-TL is a single-output fixed linear regulator from ROHM Semiconductor, classified as a CMOS LDO voltage regulator. It provides a fixed output voltage of 1 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 power supply rejection ratio (PSRR) of 70 dB. Key performance metrics include a dropout voltage of 470 mV, line regulation of 2 mV, and load regulation of 25 mV. Quiescent current is specified at 50 uA, with a maximum power dissipation of 560 mW. It functions in temperatures from -40 C to +85 C.

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

• CMOS architecture for low quiescent current consumption
• Integrated overcurrent and thermal shutdown protection
• Fixed positive output voltage configuration

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

• Battery-powered portable electronics requiring stable low-voltage rails
• Embedded systems needing regulated power for logic circuits
• General-purpose power management in compact surface-mount designs

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

Verify the component status before procurement, as this part is marked NRND (Not Recommended for New Designs). Confirm that existing inventory or last-time-buy options align with long-term production requirements. Ensure compatibility with DFN-4 packaging specifications and check for any updated datasheet revisions that may affect pinout or electrical characteristics relative to previous versions.

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

Select this regulator when a precise 1 V output is required with up to 300 mA load capacity. Consider its 470 mV dropout voltage against the minimum available input voltage to ensure regulation stability. Evaluate the 50 uA quiescent current impact on overall system efficiency. Verify that the DFN-4 package meets thermal dissipation needs given the 560 mW power limit under expected operating conditions.

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

This component belongs to the BUxxUA3WNVX series of low-dropout regulators manufactured by ROHM Semiconductor. These devices are designed for applications requiring small form factors and efficient power management. The series utilizes CMOS technology to achieve low standby currents while maintaining robust regulation performance across varying load and temperature conditions.

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

BU20UA3WNVX-TL: Provides 2 V output instead of 1 V; same package and similar current rating. BU22UA3WNVX-TL: Offers 2.2 V output; verify voltage requirement change. BU25UA3WNVX-TL: Delivers 2.5 V output; higher voltage drop may be acceptable depending on input rail.