BU18UA3WNVX-TL

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

The BU18UA3WNVX-TL is a single-output fixed low-dropout (LDO) linear voltage regulator manufactured by ROHM Semiconductor. It provides a fixed output voltage of 1.8 V with a maximum output current capability of 200 mA. The device operates within an input voltage range of 1.7 V to 5.5 V and features a typical dropout voltage of 250 mV at full load. It is housed in a compact DFN-4 surface-mount package. The regulator supports an operating temperature range from -40°C to +85°C and includes internal protection mechanisms such as over-current protection and thermal shutdown.

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

• Fixed 1.8 V output voltage for stable power supply applications
• Compact DFN-4 surface-mount package design
• Integrated over-current and thermal shutdown protection circuits

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

• Portable electronic devices requiring low-noise power regulation
• Battery-powered equipment utilizing CMOS logic circuits
• General-purpose linear voltage regulation in consumer electronics

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

Verify the component status before procurement, as this specific part number is designated as NRND (Not Recommended for New Designs). Confirm availability through authorized distributors, noting that stock levels may be limited or discontinued. Ensure compatibility with existing PCB layouts using the DFN-4 package dimensions. Review the official datasheet for any updates regarding end-of-life notices or recommended alternative components.

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

Select this component when a fixed 1.8 V output is required with a 200 mA current capacity in a small form factor. Consider the 1.7 V minimum input voltage constraint for battery-operated systems. Evaluate the thermal performance within the specified -40°C to +85°C operating range. Compare against other LDOs if higher output currents or different voltage options are needed.

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

This component belongs to the BUxxUA3WNVX series of low-dropout regulators from ROHM Semiconductor. These devices are designed for general-purpose power management in portable electronics. The series offers various fixed output voltages while maintaining consistent package styles and protection features. The BU18UA3WNVX-TL specifically targets applications needing a regulated 1.8 V rail.

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

Check for direct pin-compatible substitutes within the same series, such as BU12UA3WNVX-TL or BU20UA3WNVX-TL, depending on required voltage. Verify electrical specifications match the original design requirements.