BU22UA3WNVX-TL

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

The BU22UA3WNVX-TL is a fixed positive low-dropout (LDO) linear voltage regulator manufactured by ROHM Semiconductor. It provides a fixed output voltage of 2.2 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 dropout voltage of 260 mV at full load. It includes an enable control pin for power management and offers protection against overcurrent and thermal overload. The regulator is housed in a compact 4-UDFN package with a bare pad, suitable for surface-mount applications.

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

• Integrated enable control function for efficient power management
• Built-in overcurrent and thermal shutdown protection circuits
• High power supply ripple rejection ratio for stable operation
• Compact surface-mount packaging for space-constrained designs

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

• Battery-powered portable electronic devices
• Low-noise power supply stages for sensor modules
• Embedded systems requiring stable 2.2 V logic levels
• Mobile communication equipment power distribution

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

Verify the component status as Not Recommended for New Designs (NRND) before finalizing procurement plans. Confirm that the 4-UDFN package dimensions match the target PCB footprint. Ensure compatibility with RoHS3 compliance requirements. Check for specific ordering suffixes if reel quantities differ from standard factory packs. Validate lead times due to potential production phase-out status.

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

Select this regulator when a fixed 2.2 V output is required with up to 300 mA load capability. Consider the 1.7 V minimum input voltage for battery-operated applications where headroom is limited. Evaluate the thermal performance given the small package size and power dissipation limits. Compare quiescent current specifications against other LDOs if battery life is critical. Ensure the operating temperature range meets the environmental conditions of the end application.

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

This component belongs to the BUxxUA3 series of CMOS LDO regulators from ROHM Semiconductor. The series is characterized by low quiescent current and high ripple rejection ratios. The BU22UA3WNVX variant specifically targets applications needing a 2.2 V rail. It shares architectural similarities with other fixed-output variants in the family, differing primarily in output voltage settings and specific package configurations.

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

Check for direct substitutes within the BUxxUA3 series offering different fixed voltages if system requirements change. Verify pin-to-pin compatibility with alternative LDOs from other manufacturers if sourcing constraints exist. Ensure replacement components maintain similar dropout voltage and current capabilities.