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Texas Instruments LM2576T-ADJ

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    LM2576T-ADJ this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including LM2576T-ADJ price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for LM2576T-ADJ to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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    LM2576T-ADJ Typical application Circuitry


    The LM2576T-ADJ hails from the LM2576 series of regulators, a set of high-efficiency, step-down DC-DC converters. The ADJ version denotes the adjustable output voltage feature, allowing users to set the desired output from 1.23V up to 37V, provided that the input voltage is higher than the chosen output voltage. The LM2576T-ADJ is a flexible option for a variety of applications because of its versatility.

    1. Vin (Pin 1): Connect the input voltage source to the LM2576T-ADJ's first pin. A voltage input that surpasses the output by at least the dropout voltage is necessary for proper regulation. Placing a high-quality capacitor near this pin is crucial for stabilizing input voltage and filtering out noise.

    2. Output (Pin 2): This pin is where the inductor connects to the LM2576T-ADJ. It channels energy stored in the inductor to the load. A Schottky diode, placed antiparallel to the inductor, should connect to this pin to facilitate current flow during the non-conducting phase of the cycle. An output capacitor between this pin and the ground is necessary to maintain output voltage stability.

    3. Feedback (Pin 3): The LM2576T-ADJ utilizes this pin to regulate the output voltage. It's here that a resistor divider network is connected, which sets the output voltage by feeding a portion of it back to the regulator. The voltage across the lower resistor in the divider network should be 1.23V for the regulator to adjust the output accordingly.

    4. On/Off (Pin 4): This pin provides the enable and disable function for the LM2576T-ADJ. Driving it high enables the regulator, while pulling it low will shut down the regulator, minimizing power consumption when not in use.

    5. Ground (Pin 5): The ground pin should have a solid connection to the system ground. For the LM2576T-ADJ, this common reference point is crucial for both the internal operation and the setting of the output voltage via the feedback pin.

    The implementation of the LM2576T-ADJ in a circuit must be executed with a thoughtful selection of external components, like the inductor, whose value and current rating will determine the performance of the regulator in delivering the necessary power. Similarly, the choice of the Schottky diode and the capacitors must align with the current requirements and frequency characteristics of the regulator.

    Additionally, the layout of the LM2576T-ADJ on the PCB should be designed with low noise and minimal parasitic effects in mind. Short, wide traces for power paths, proper capacitor placement, and thermal management considerations will ensure the regulator operates within its best performance envelope.

    LM2576T-ADJ informationLM2576T-ADJ information

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