78L33 PDF Datasheet – 3.3V, Positive Voltage Regulator

Part Number: 78L33

Function: 3.3V, Positive voltage regulator

Package: SOT-89, TO-92 type

Manufacturer: STMicroelectronics

Images:78L33 pdf regulator


78L33 is 3.3V, Positive Voltage Regulator. This series of fixed-voltage monolithic integrated circuit voltage regulators is designed for a wide range of applications. These applications include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. In addition, they can be used with power-pass elements to make high-current voltage regulators. Each of these regulators can deliver up to 100mA of output current.


1. 3-Terminal Regulators

2. Output Current Up to 100Ma

3. No External Components

4. Internal Thermal Overload Protection

5. Internal Short-Circuit Limiting

6. Direct Replacement for Fairchild µA78L00 Series

7. Maximum Output Current of 100mA (TC=25℃)

8. Internal Short-Circuit Current Limiting

9. Internal Thermal Overload Protection


78L33 pinout datasheet

A voltage regulator is an electronic device that is used to maintain a constant voltage level, regardless of changes in load or input voltage.

It does this by adjusting the output voltage so that it remains within a specified range.

This helps to ensure that the voltage supplied to a device remains within the acceptable range, even under varying conditions such as changes in temperature or load.

They are essential components in many electronic systems to ensure reliable and safe operation.

78L33 PDF Datasheet