BU18SA4WGWL-E2

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

The BU18SA4WGWL-E2 is a single-output CMOS LDO regulator manufactured by ROHM Semiconductor. It provides a fixed 1.8 V output with a maximum current 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 150 mV, with a maximum of 360 mV at 100 mA. It offers a typical PSRR of 70 dB and maintains a voltage regulation accuracy of 0.6%. The IC includes overcurrent and thermal shutdown protection, functions in temperatures from -40°C to +85°C, and is housed in a WLCSP-4 (UCSP50L1) package.

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

• Integrates overcurrent protection and thermal shutdown mechanisms for enhanced circuit reliability.
• Features low quiescent current consumption to support energy-efficient operation in portable devices.
• Provides high ripple rejection performance suitable for noise-sensitive RF and logic applications.

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 specific suffix against official ROHM documentation to confirm pinout and electrical characteristics match the design requirements. Ensure the ordering code corresponds to the desired tape and reel quantity. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement specifications.

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

Select this component when a stable 1.8 V rail is required for low-power digital or analog loads. The UCSP50L1 package is ideal for space-constrained designs. Verify that the load current does not exceed 200 mA and that the input voltage remains within the specified operational limits to ensure proper regulation and thermal performance.

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

This part belongs to the BUxxSA4 series of high-performance CMOS LDO regulators from ROHM. The series is characterized by low circuit current and excellent noise and load response characteristics. These regulators are designed for various applications including logic ICs, RF power, and camera modules, offering a compact solution for power management needs.

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

Check for BU28SA4WGWL-E2 if a different fixed output voltage is needed while maintaining similar package and current specifications. Verify compatibility with existing PCB footprints and thermal constraints before substituting any alternative components from the same manufacturer family.