L78L33ACZ

Overview

The L78L33ACZ is a three-terminal positive linear voltage regulator from the L78L series, manufactured by STMicroelectronics. It provides a fixed output voltage of 3.3 V with an output current capability up to 100 mA. The device features internal thermal overload protection and short-circuit protection, ensuring robust operation without external components. It operates within a junction temperature range of 0°C to 125°C and accepts input voltages up to 30 V for this output level. The part is housed in a TO-92 package.

Feature Summary

• Internal current limiting and thermal shutdown protection
• No external components required for basic regulation
• Fixed 3.3 V output voltage
• Capable of delivering up to 100 mA output current

Applications

• Local or on-card regulation
• Elimination of noise and distribution problems associated with single-point regulation
• Replacement for Zener diode/resistor combinations

Procurement Notes

Verify the specific ordering suffix 'Z' corresponds to the TO-92 package configuration required for your design. Confirm that the 'AC' designation aligns with the necessary voltage tolerance specifications for your application. Ensure compatibility with the intended PCB footprint and thermal management strategy given the package type.

Selection Notes

Select this component when a simple, fixed 3.3 V supply is needed for low-current applications. It is suitable for designs prioritizing ease of implementation due to the lack of external component requirements. Consider the thermal resistance characteristics of the TO-92 package if operating near maximum current limits.

Part Context

This device belongs to the L78L series of positive voltage regulators. The series includes various output voltage options and packages such as SO-8 and SOT-89. The L78L33ACZ specifically denotes the 3.3 V version in the TO-92 through-hole package with AC tolerance grading.

Replacement Considerations

L78L33ACZTR