LM1117IDT-5.0

Overview

The LM1117IDT-5.0 is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed 5V output with a maximum load current of 800mA in a TO-252 (DPAK) surface-mount package. The device features an internal reference voltage accuracy of ±1%, line regulation of less than 1mV, and load regulation of less than 1mV. It operates within an input voltage range up to 15V and supports a junction temperature range from -40°C to +125°C. The regulator includes built-in current limiting and thermal shutdown protection.

Feature Summary

• Fixed 5V output voltage with high precision
• Integrated current limit and thermal shutdown protection
• Low dropout voltage operation for efficient power management

Applications

• Battery-powered systems requiring stable 5V rails
• General-purpose power supplies
• Post-regulation for switching regulators

Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the part number suffix matches the required package and temperature grade. Confirm RoHS compliance status if environmental regulations apply to your specific deployment requirements.

Selection Notes

Select this component when a reliable 5V supply is needed for moderate current loads up to 800mA. Consider the thermal performance in the TO-252 package relative to ambient conditions. Ensure the input voltage remains within the 15V absolute maximum rating while maintaining sufficient headroom for the dropout voltage.

Part Context

This component belongs to the LM1117 series of low-dropout positive voltage regulators. The series offers various fixed output voltages and adjustable versions. The 'IDT' suffix indicates a specific tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

LM1117DT-5.0/NOPB: Direct equivalent from Texas Instruments with identical electrical specifications and pinout.