LM21215AMHX-1/NOPB Integrated Circuits (ICs)

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SB21215AMHX-1/NOPB is a DC-DC switching regulator that is released by Texas Instruments. This highly integrated power module can easily be integrated into the system equipment, making it the perfect choice for consumer electronic engineers who need high efficiency and rich features. This article will focus on the application field and working principle of SB21215AMHX-1/NOPB.

SB21215AMHX-1/NOPB is a highly integrated step-down DC-DC switching regulator. It integrates a N-channel power MOSFET H-bridge driving circuit, a voltage loop control circuit and other peripheral circuits. The module can output fixed or adjustable voltage, with up to 2A of continuous output current. It is designed for industrial and consumer applications such as digital audio, LCD TVs, LED lights and automotive audio systems. The module also has protection features such as input overvoltage shutdown, system overcurrent protection, thermal shutdown and output short-circuit protection.

The SB21215AMHX-1/NOPB module can operate in either fixed output voltage mode or adjustable voltage mode. In the fixed output voltage mode, the module acts similar to a traditional DC-DC buck regulator. The input voltage is stepped down to the regulated output voltage and the output current is regulated by varying the on/off time of the switching MOSFETs. The output voltage is determined by a resistive voltage divider circuit. In adjustable voltage mode, the output voltage is regulated by the feedback loop. By varying the external resistance, the output voltage can be varied. The feedback voltage is compared against the reference voltage, and the error is used by the control circuitry to adjust the output voltage.

SB21215AMHX-1/NOPB is an ideal choice for industrial and consumer applications that require high efficiency and low noise switching converters. Its integrated design eliminates the need for complicated power supply circuits. Its adjustable output voltage feature makes it well-suited for applications that require variable output voltage. The module also comes with built-in safety features to protect the system from overcurrent and overvoltage conditions.

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