BU18SD5WG-TL

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

The BU18SD5WG-TL is a single-channel CMOS LDO voltage regulator manufactured by ROHM Semiconductor. It provides a fixed 1.8 V output with a maximum current of 500 mA. The device operates within an input voltage range of 1.7 V to 6 V and features a typical dropout voltage of 150 mV at 100 mA. Key electrical parameters include a quiescent current of 33 µA, ripple rejection of 68 dB, and line/load regulation of 4 mV and 2.5 mV respectively. It supports an operating temperature range from -40°C to +105°C and is housed in an SSOP-5 package.

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

• Integrates shutdown function for power management
• Includes thermal shut-down and over-current protection circuits
• Features discharge function for output capacitor control

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

• Logic IC power supply
• RF circuit power supply
• Camera module power supply

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

Verify the specific suffix TL against official ROHM documentation to confirm tape-and-reel packaging configuration. Ensure the SSOP-5 footprint matches the target PCB design. Confirm RoHS compliance status through the manufacturer's latest datasheet or certification documents before finalizing procurement specifications.

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

Select this component when a low quiescent current of 33 µA is required alongside a 500 mA load capability. The fixed 1.8 V output eliminates external resistor networks. Verify that the 1.7 V minimum input voltage meets system requirements. The wide operating temperature range supports industrial applications without additional derating considerations.

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

This part belongs to the BU18SD series of general-purpose CMOS LDO regulators. It utilizes the SSOP-5 package (2.90mm x 2.80mm x 1.25mm). The product is classified under PMIC - Power Management ICs. It is designed for high ripple rejection and excellent load response characteristics suitable for sensitive analog and digital circuits.

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

BU18SD5WG is the standard version of this component. BD5225G-1 is listed as a similar specification replacement for related detector functions but differs in type.