LDI8119-2.5EN

Overview

The Diotec Semiconductor LDI8119-2.5EN is a fixed-output low-dropout (LDO) linear voltage regulator housed in an SOT-23-5 package. It provides a nominal output voltage of 2.5 V with a maximum continuous output current of 500 mA. The device supports input voltages up to 18 V and features a typical dropout voltage of 0.125 V at 100 mA load. Key electrical specifications include a quiescent current of 3.6 µA, power supply rejection ratio (PSRR) ranging from 80 dB at 100 Hz to 45 dB at 10 kHz, and an operating junction temperature range of -40°C to +125°C. Integrated protection mechanisms include overcurrent limiting and thermal shutdown.

Feature Summary

• Fixed 2.5 V output configuration for precise voltage regulation
• Low quiescent current consumption of 3.6 µA for energy efficiency
• Integrated overcurrent and thermal shutdown protection circuits
• High power supply rejection ratio across standard frequency ranges

Applications

• Battery-powered portable electronic devices requiring stable low-voltage rails
• Embedded systems utilizing microcontrollers or sensors needing 2.5 V supply
• Industrial control modules operating within extended temperature environments
• Communication equipment requiring low-noise power regulation

Procurement Notes

Verify the specific suffix EN against official Diotec documentation to confirm RoHS compliance and halogen-free status. Confirm the SOT-23-5 package variant matches your PCB footprint requirements. Ensure input voltage constraints are respected to maintain regulatory performance. Cross-reference the datasheet revision date to validate parameter accuracy before finalizing procurement orders.

Selection Notes

Select this component when a fixed 2.5 V output is required with high efficiency and compact sizing. The SOT-23-5 package suits space-constrained designs. Evaluate the 500 mA current capability against peak load demands. Consider the 18 V input tolerance for applications with varying supply lines. Verify thermal management needs given the junction temperature limits and power dissipation characteristics under full load conditions.

Part Context

The LDI8119 series represents Diotec's lineup of low-dropout regulators designed for general-purpose power management. This specific model belongs to the fixed-output subset, offering standardized voltage levels to simplify circuit design. The series emphasizes reliability through integrated protection features and wide operating temperature ranges suitable for diverse industrial and consumer applications.

Replacement Considerations

Publicly confirmed substitute part numbers for LDI8119-2.5EN are not available in the provided source material. Consult official manufacturer substitution guides or equivalent pin-compatible LDOs with matching 2.5 V output and 500 mA current ratings if alternatives are required.