LDI1117-2.5H

Overview

The Diotec Semiconductor LDI1117-2.5H is a fixed-output Low Dropout (LDO) linear voltage regulator housed in a SOT-223 surface-mount package. It provides a nominal output voltage of 2.5 V with a tolerance of ±1%, supporting a maximum output current of 1 A. The device operates with a maximum input voltage of 20 V and features a typical dropout voltage of 1 V at full load, with a maximum of 1.25 V. Key electrical characteristics include a line regulation of 6 mV, load regulation of 10 mV, and a typical power supply rejection ratio (PSRR) of 50 dB. The component supports an operating junction temperature range up to +150 °C.

Feature Summary

• Provides a stable fixed 2.5 V output with high precision ±1% tolerance for sensitive digital logic supplies.
• Capable of delivering up to 1 A continuous output current while maintaining low dropout performance under heavy loads.
• Integrates comprehensive protection mechanisms including thermal shutdown and current limiting to ensure operational safety.

Applications

• Powering microcontrollers and embedded processors requiring a precise 2.5 V rail.
• Supplying reference voltages for analog-to-digital converters (ADCs) and data acquisition systems.
• Providing regulated power for portable battery-operated devices and consumer electronics.

Procurement Notes

Verify the specific suffix 'H' against the manufacturer's latest datasheet to confirm compliance with RoHS directives and halogen-free status. Confirm that the SOT-223 footprint matches your PCB design guidelines. Check for moisture sensitivity level (MSL) requirements during storage and handling to prevent damage prior to soldering.

Selection Notes

Select this component when a fixed 2.5 V output is required with a 1 A current capacity. Ensure the input voltage does not exceed the 20 V absolute maximum rating. Consider the thermal dissipation capabilities of the SOT-223 package relative to the expected power loss in your application environment.

Part Context

This part belongs to the LDI1117 series of positive LDO regulators from Diotec Semiconductor. The series offers various fixed output voltages in the SOT-223 package, designed for efficient power management in space-constrained applications. It serves as a cost-effective solution for converting higher unregulated voltages to stable lower DC levels.

Replacement Considerations

Cross-reference with other LDI1117 variants for different voltage outputs if system requirements change. Verify pinout compatibility with alternative manufacturers' 1A LDOs before substitution.