LM323K Integrated Circuits (ICs) |
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| Allicdata Part #: | 497-2976-5-ND |
| Manufacturer Part#: |
LM323K |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | STMicroelectronics |
| Short Description: | IC REG LINEAR 5V 3A TO3 |
| More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
| DataSheet: |  LM323K Datasheet/PDF |
| Quantity: | 1000 |
| 1 +: | 0.00000 |
| Voltage Dropout (Max): | -- |
| Base Part Number: | LM323 |
| Supplier Device Package: | TO-3 |
| Package / Case: | TO-204AA, TO-3 |
| Mounting Type: | Through Hole |
| Operating Temperature: | 0°C ~ 125°C |
| Protection Features: | Over Current, Over Temperature |
| Control Features: | -- |
| PSRR: | -- |
| Current - Output: | 3A |
| Series: | -- |
| Voltage - Output (Max): | -- |
| Voltage - Output (Min/Fixed): | 5V |
| Voltage - Input (Max): | 20V |
| Number of Regulators: | 1 |
| Output Type: | Fixed |
| Output Configuration: | Positive |
| Part Status: | Obsolete |
| Packaging: | Tube |
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LM323K is an integrated circuit that belongs to the Voltage Regulators - Linear category of PMIC (Power Management Integrated Circuits). In particular, it is a Linear Fixed Output Voltage Regulator. It belongs to the 8-PDIP, 8-TSOP and 8-MSOP package family.
Its primary application field is to set a fixed output voltage within a wide range and to maintain a constant output current. It has high accuracy and low noise, with a high ripple rejection ration, low dropout voltage and low quiescent current as key features.
The LM323K is a 3 terminal regulator that can output adjustable voltage in the range of 1.2V to 37V. It is typically used as a post regulator for an unregulated power supply, or for battery operated equipment.
Working Principle
The LM323K regulator works on the principle of an adjustable precision voltage reference. It senses the voltage at its output terminal and adjusts the output voltage to a desired set point that can be controlled through an external resistor connected to its output terminal.
The voltage is applied to the reference terminal of the LM323K through an internal voltage divider. It is then compared to the voltage at the output terminal and a differential signal is fed back to the regulator. It adjusts the output voltage until it matches the voltage at the reference terminal.
The output current of the LM323K is limited to the maximum value of 3.3A. It can be set to the desired value by using an external current limiting resistor. The output voltage and current will be maintained at the set levels until the voltage at the reference terminal of the LM323K changes.
LM323K also features an overcurrent limiter that prevents the device from exceeding the set maximum current limit. It also features a low dropout voltage of 0.2V, making it ideal for use in battery powered applications.
Features & Benefits
- High Accuracy – LM323K can output a fixed voltage up to ±2.0%.
- Low Noise – LM323K has a low noise voltage floor of 1V, making it ideal for low noise applications.
- High Ripple Rejection Ratio – The LM323K can reject up to 70dB of ripple, making it ideal for applications requiring a high level of noise rejection.
- Low Dropout Voltage – The LM323K has a dropout voltage of 0.2V, making it ideal for post regulation voltage requirements.
- Low Quiescent Current– The device can operate at a quiescent current as low as 1mA, making it ideal for battery powered applications.
Applications
Due to its features and benefits, the LM323K can be used in a variety of applications. It is commonly used in post power supplies for computers or other electronic equipment, for applications requiring an adjustable voltage such as LED lights and displays, motors, and power amplifiers among others.
The LM323K can also be used in battery powered devices such as portable radios and cell phones, in order to maintain the output current or voltage for a long period of time. It can also be used as a precision current source in digital electronics, such as logic and gate circuits and motor controllers.
Conclusion
The LM323K is a linear, fixed output voltage regulator that is part of the PMIC voltage regulator family. It can output adjustable voltage up to 37V, with features such as high accuracy, low noise, high ripple rejection and low dropout voltage.
It is commonly used in post power supplies, for applications requiring adjustable voltage such as LED lights and displays, motors, and power amplifiers. It can also be used in battery powered devices such as portable radios and cell phones, in order to maintain the output current or voltage for a long period of time.
The specific data is subject to PDF, and the above content is for reference
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