L7815ABD2T-TR

Overview

The L7815ABD2T-TR is a fixed positive linear voltage regulator from the STMicroelectronics L78xx series, housed in a surface-mount D2PAK (TO-263-3) package. It provides a fixed output voltage of 15V with a maximum output current of 1.5A. The device supports a maximum input voltage of 35V and operates within a junction temperature range of -40°C to +125°C. Key electrical parameters include a typical dropout voltage of 2V at 1A output and a static current of approximately 6mA. It features internal protections against overcurrent, thermal overload, and short circuits.

Feature Summary

• Integrated thermal shutdown and current limiting protection mechanisms ensure robust operation under fault conditions.
• Surface-mount D2PAK packaging facilitates automated assembly and efficient heat dissipation for high-current applications.
• Fixed 15V output eliminates the need for external feedback components, simplifying circuit design.

Applications

• Local on-card voltage regulation for electronic equipment.
• Power supplies requiring stable 15V DC output.
• General-purpose positive voltage regulation in industrial control systems.

Procurement Notes

Verify the exact suffix 'TR' confirms the tape-and-reel packaging format required for automated pick-and-place manufacturing processes. Confirm that the D2PAK footprint matches the target PCB layout, as thermal pad dimensions are critical for proper soldering and heat transfer. Ensure the 1.5A current rating aligns with the system's thermal management capabilities, as adequate heatsinking may be necessary to maintain performance within the specified operating temperature range.

Selection Notes

Select this component when a fixed 15V output is required in a surface-mount form factor. Compare the 1.5A current capability against load requirements; if lower current suffices, smaller packages like DPAK may offer cost benefits. Verify that the input voltage remains below the 35V maximum limit under all operating conditions. Consider the thermal resistance of the D2PAK package relative to the PCB copper area to ensure the junction temperature stays within safe limits during continuous operation.

Part Context

This part belongs to the L78xx family of three-terminal positive regulators, widely used for local regulation tasks. The 'AB' designation typically indicates specific performance tolerances or revisions within the series. The D2T suffix denotes the D2PAK surface-mount package, while '-TR' specifies the reel packaging. This family is known for its simplicity and reliability in standard voltage regulation roles across various consumer and industrial electronics.

Replacement Considerations

L7815ACD2T-TR: Similar regulator with potentially different initial accuracy specifications but identical pinout and function.

FAQ

What is the maximum output current for the L7815ABD2T-TR?

The device can deliver up to 1.5A of output current, provided adequate heat sinking is implemented to manage thermal dissipation.

Does the L7815ABD2T-TR include short-circuit protection?

Yes, it incorporates internal current limiting and thermal shutdown features to protect against short circuits and overheating.