LM1117IDTX-5.0/NOPB

Overview

The LM1117IDTX-5.0/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, providing a stable 5 V output with a maximum load current of 800 mA. It operates within an extended industrial temperature range from -40°C to +125°C and utilizes the SOT-223 surface-mount package. The device features internal current limiting and thermal shutdown protection, ensuring reliability under overload conditions. Line regulation is specified at a maximum of 0.2%, while load regulation is limited to 0.4% over the full operating temperature range.

Feature Summary

• Integrated current limiting and thermal shutdown mechanisms for robust circuit protection
• Zener-trimmed bandgap reference architecture ensures high voltage accuracy
• Low dropout voltage capability maintains regulation under minimal input-to-output differentials
• SOT-223 surface-mount packaging facilitates compact board layout

Applications

• AC drive power stage modules
• Merchant network and server PSU
• Industrial AC/DC converters
• Ultrasound scanners
• Servo drive control modules

Procurement Notes

Verify that the specific ordering suffix corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm the component designation matches the industrial grade (-40°C to +125°C) rather than the commercial grade variant. Ensure the datasheet revision aligns with the manufacturing batch to guarantee accurate electrical specifications and pin configuration compatibility during integration.

Selection Notes

Select this component when a fixed 5 V rail is required with up to 800 mA capacity in space-constrained designs. The SOT-223 package offers a balance between thermal dissipation and footprint size compared to larger through-hole options. Consider the minimum dropout voltage requirements relative to the available input supply headroom to ensure continuous regulation across the entire expected load current range.

Part Context

This part belongs to the LM1117 family of low-dropout regulators, which includes adjustable versions and various fixed voltage outputs. The 'I' suffix denotes the industrial temperature rating, distinguishing it from the standard LM1117 commercial grade. The 'DTX' indicates the specific SOT-223 package type supplied in tape-and-reel form factor for high-volume surface mount production lines.

Replacement Considerations

The TLV1117 is documented as a newer drop-in alternative offering improved functionality. For applications requiring fixed output in the SOT-223 package with enhanced performance characteristics, the TLV761 is also listed as a suitable replacement option.