LM2576-12BU TR

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The LM2576-12BU TR is a widely used DC/DC buck converter, capable of delivering up to 3A of load current with a wide input voltage range of 4.95-40V and adjustable output voltage of 1.23-37V. It operates at frequencies up to 52kHz and provides a total of 180mV reference voltage accuracy. It can be used in applications such as solar-power conversion and battery-charging systems.

The LM2576-12BU TR is a monolithic integrated circuit, specifically designed to provide a simple and reliable solution for DC/DC buck pwer conversion. It incorporates two MOSFETs, an internal oscillator, and an adjustment pin, allowing for easy adjustment of the output voltage. An adjustable current limit feature and short circuit protection are also included and can be used to protect the system from overload or sudden power fluctuations. The maximum output current is 3A, which makes it suitable for applications requiring higher currents. Furthermore, the LM2576-12BU TR can be used in a wide variety of applications, including light dimming, remote monitoring, and solar-power conversion.

The working principle of the LM2576-12BU TR is quite simple. It consists of an inductor, a diode, and two power MOSFETs. The inductor stores energy when the switch is closed, and releases it when the switch is opened. The diode prevents the inductor current from flowing back when the switch is opened. The two MOSFETs operate together as a switch that periodically opens and closes, providing a regulated output voltage. The switching frequency is adjustable, and the output voltage is adjustable via an external divider circuit. The current limit feature allows the LM2576-12BU TR to limit the maximum current output, protecting the system from overload or sudden power fluctuations.

The LM2576-12BU TR is an ideal choice for applications requiring an adjustable voltage output and a wide input voltage range, including solar-power conversion and battery chargers. Its adjustable current limit feature and short circuit protection make it suitable for use in high-current applications, requiring up to 3A of load current. The internal oscillator allows for easy frequency adjustment, and the output voltage is adjustable via an external divider circuit.

Overall, the LM2576-12BU TR is a high-performance DC/DC buck converter, suitable for a variety of applications. It features wide input voltage range, adjustable output voltage, efficient current limit, and short circuit protection. It is a reliable, cost-effective solution for various power conversion needs.

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