LM323K Voltage Regulator: LM323K, Datasheet, Pinout, Equivalent

The pinout of LM323K is shown below:

LM323K Pinout 

LM323K Footprint

LM323K 3D Model

The LM323K are three-terminal positive voltage regulators with a preset 5 V output and a load driving capability of 3 A. New circuit design and processing techniques are used to provide the high output current without sacrificing the regulation characteristics of lower current devices. The 3 A regulator is virtually blowout proof. Current limiting, power limiting and thermal shutdown provide the same high level of reliability obtained with these techniques in the LM209, 1 A regulator. An overall worst-case specification for the combined effects of input voltage, load current, ambient temperature, and power dissipation ensure that the LM323K will perform satisfactorily as a system element.

■Output current: 3 A 

■ Internal current and thermal limiting 

■ Typical output impedance: 0.01 W 

■ Minimum input voltage: 7.5 V

■ Power dissipation: 30 W

The equivalent for LM323K:

• LM317

• LM7805

Connect an input filter capacitor of 0.33uF or more and an output filter capacitor of 0.1uF or more based on the output current to get a regulated +5V on the output pin when using an LM323K as a voltage regulator. Just remember that the input voltage should be at least 7.5V.

When coupled with a resistor, the LM323K can be utilized as a constant current source as well as a fixed voltage regulator. When used with an  Op-Amp, it may also operate as a variable voltage regulator, making it useful for a wide range of applications.

The application circuit of LM323K is shown below:

LM323K Application Circuit-Basic 3 A regulator

LM323K Application Circuit-Trimming output to 5 V

LM323K Application Circuit-Adjustable regulator 0 - 10 V  3 A

LM323K Application Circuit-10 A regulator with complete overload protection

STMicroelectronics LM323K technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics LM323K.

LM323K Package

STMicroelectronics is a global independent semiconductor company and is a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence trends.