BU21UA3WNVX-TL

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

The BU21UA3WNVX-TL is a single-output low-dropout (LDO) linear voltage regulator manufactured by ROHM Semiconductor. It provides a fixed output voltage of 2.1 V with a maximum output current capability of 200 mA. The device operates within an input voltage range from 1.7 V to 5.5 V and features a typical dropout voltage of 220 mV. Designed for surface-mount installation, it utilizes a DFN-4 package. The component supports positive polarity operation and functions reliably across a temperature range of -40°C to +85°C.

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

• Single-output fixed voltage regulation architecture
• Low dropout performance for efficient power management
• Compact surface-mount packaging for space-constrained designs

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

• Power supply for logic integrated circuits
• RF module power sources
• Camera module power supplies

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 and specific electrical parameters align with existing design requirements. Ensure compliance with RoHS directives if applicable to the target market. Review official datasheets for any recent updates regarding availability or substitution recommendations prior to finalizing orders.

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

Select this regulator when a stable 2.1 V rail is required for low-power digital or analog loads. The 200 mA output current suits moderate load applications. Consider the 5.5 V maximum input voltage limit during system design. The DFN-4 package offers a small footprint suitable for portable electronics. Verify thermal dissipation capabilities within the specified operating temperature range to ensure reliable performance under load conditions.

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

This component belongs to the BU21UA3WNVX series of LDO regulators from ROHM Semiconductor. It is categorized under PMIC - Power Management ICs. The part is designed for general-purpose voltage regulation tasks in consumer and industrial electronics where compact size and stable output are prioritized over high-current delivery.

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

BU21TD2WNVX-TL: Similar 2.1 V output but different package (SSON004X1010) and higher input voltage rating.