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LM2576S-ADJ
+NomenclatureSWITCHING REGULATOR, VOLTAGE-MOD
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FabricantSemi - conducteurs nationaux
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Pièce fabricant #LM2576S-ADJ
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Fiche technique LM2576S-ADJ DataSheet
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Package TO-263-5
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En stock4619
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Spécifications
| Attribut | Valeur |
| Package | Bulk |
| ProductStatus | Active |
Présentation
Description
Key features include a high-efficiency performance typically around 77-88%, a fixed switching frequency of 52 kHz to minimize noise and electromagnetic interference, and built-in thermal shutdown and current limit protection for enhanced reliability. The LM2576S-ADJ is easy to use, requiring only a few external components, such as an inductor, a diode, and capacitors, to function. Its TO-263 package helps in efficient heat dissipation, making it suitable for applications in battery-powered devices, power supply units, and industrial equipment requiring reliable and adjustable voltage regulation.
Equivalent
Features
1. Adjustable Output Voltage: Offers an adjustable output range from 1.23V to 37V with a fixed 52 kHz switching frequency.
2. High Efficiency: Capable of achieving up to 90% efficiency, making it suitable for power-sensitive applications.
3. Output Current: Supports up to 3A of output current, making it ideal for various power applications.
4. Simple Design: Requires minimal external components, simplifying circuit design and reducing PCB space.
5. Heat Management: Equipped with thermal shutdown, current limiting, and overvoltage protection for reliable operation.
6. Wide Input Voltage Range: Operates efficiently across a wide input voltage range from 4V to 40V.
7. Low Standby Current: Features a low standby current for energy efficiency in idle states.
8. Various Packages: Available in different packages, such as TO-220 and TO-263, providing flexibility for different design requirements.
These features make the LM2576S-ADJ suitable for a broad range of applications, including battery-powered devices, embedded systems, and industrial electronics.
Pinout
1. VIN: This pin is the input voltage supply, where the input voltage is connected to power the regulator.
2. Output: This pin is the regulated output voltage, where the load is connected.
3. Feedback (FB): This pin is used to set the output voltage by connecting it to a voltage divider from the output.
4. ON/OFF: An optional pin for enabling or disabling the regulator. Pulling it low shuts the regulator down, reducing supply current to a few microamperes.
5. Ground (GND): This pin is the ground connection for the input voltage and output voltage.
The LM2576S-ADJ supports an adjustable output voltage by setting the appropriate resistive divider connected to the feedback pin. It is commonly used in power supply applications requiring efficiency and simplicity.