L78L12ACD13TR

Overview

The L78L12ACD13TR is a fixed positive linear voltage regulator from the STMicroelectronics L78L series, housed in an 8-SOIC surface-mount package. It provides a nominal output voltage of 12 V with a maximum continuous output current of 100 mA. The device features internal thermal overload and short-circuit protection, eliminating the need for external components. It operates within a junction temperature range of 0°C to 125°C and accepts input voltages up to 35 V.

Feature Summary

• Integrated thermal overload and short-circuit protection mechanisms ensure robust operation under fault conditions without requiring external protective circuitry.

Applications

• Local or on-card regulation for noise elimination
• Replacement for Zener diode/resistor combinations
• Power pass element integration for high-current regulators

Procurement Notes

Verify that the component matches the specific SO-8 package configuration and the AC accuracy grade (±4%). Confirm the manufacturer's part number against official STMicroelectronics documentation to ensure authenticity and correct revision status before procurement.

Selection Notes

Select this component when a fixed 12 V output is required with a maximum load current of 100 mA. Ensure the input voltage does not exceed the 35 V absolute maximum rating. Consider the thermal resistance characteristics of the SO-8 package for adequate heat dissipation at higher ambient temperatures.

Part Context

This component belongs to the L78Lxx family of three-terminal positive regulators. The 'A' suffix indicates a tighter output voltage tolerance compared to the standard 'C' variant. The 'D13' designation specifies the SO-8 surface-mount package and tape-and-reel packaging format.

Replacement Considerations

Direct replacements include other L78L12 variants such as L78L12CD13TR or L78L12ABD13TR, provided the package type and voltage accuracy requirements are compatible.