LDI559-05EN

Overview

The LDI559-05EN is a linear voltage regulator manufactured by Diotec Semiconductor, housed in an SOT-23-5 surface-mount package. It provides a fixed positive output voltage of 5V with a maximum output current capability of 300mA. The device supports input voltages up to 18V and exhibits a typical voltage drop of 0.16V at rated load. Designed for robust operation, it functions within a temperature range from -40°C to +125°C.

Feature Summary

• Provides stable fixed 5V DC output
• Supports high ambient temperatures up to 125°C
• Compact SOT-23-5 surface-mount footprint

Applications

• Portable battery-powered electronics
• Embedded system power supplies
• General-purpose logic circuit regulation

Procurement Notes

Verify the specific manufacturer datasheet for complete electrical characteristics and thermal derating curves before finalizing designs. Confirm that the SOT-23-5 package dimensions match the target PCB layout requirements. Ensure input voltage constraints are respected to maintain proper regulation under all operating conditions.

Selection Notes

Select this component when a compact, low-cost solution is required for regulating 5V rails in space-constrained applications. It is suitable for loads drawing up to 300mA where moderate efficiency is acceptable. Consider thermal dissipation capabilities if the input-output differential voltage is high during continuous operation.

Part Context

This part belongs to Diotec Semiconductor's LDI series of linear regulators, which focuses on providing reliable power management solutions in small packages. The series includes various fixed voltage options tailored for consumer and industrial electronics, emphasizing ease of integration and broad operational temperature ranges.

Replacement Considerations

Compatible alternatives include other 5V LDOs in SOT-23-5 packages such as the LD1117S50TR or similar variants from different manufacturers, provided they meet the 300mA current and 125°C temperature specifications.