LM2586SX-5.0

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LM2586SX-5.0

The LM2586SX-5.0 is a PMIC (Power Management IC) voltage regulator that falls into the category of DC/DC switching power supplies, or switching voltage regulators. It takes an input voltage, generally larger than the desired output voltage, and reduces it down to the required value, offering improved power efficiency compared to linear voltage regulators. It also supports a wide range of input voltages, making them well suited as AC to DC conversions, as well as having low stand-by power consumption.

Application Field

The LM2586SX-5.0 has many applications in the electronic field. It is commonly used as an AC to DC converter, providing a regulated output voltage to power sensitive components. It can also be used as an efficient power supply for wireless sensors, energy harvesting, and automotive applications. Other uses for the LM2586SX-5.0 include powering luminaires and intelligent lighting systems, industrial applications, audio amplifiers, motor control systems, instrumentation and medical devices.

Working Principle

The LM2586SX-5.0 is a switching voltage regulator, meaning it takes a higher voltage input and reduces it to the desired output voltage, usually 12V or 5V. It commonly features a flyback topology, which combines a step-down transformer with an integrated switch. To start, the switch is constantly toggled on and off at a set frequency, depending on the circuit design. When the switch is on, the input voltage is transferred to the primary side of the transformer, and when the switch is off, the energy stored in the transformer is released. As this energy exits the secondary side of the transformer, it is rectified and regulated to the output voltage, anywhere from 0V to the maximum output voltage. This process is known as pulse width modulation (PWM), and it is used in a variety of power supplies, including those found in consumer electronic products.

The LM2586SX-5.0 features high efficiency, low stand-by power consumption, a wide input voltage range and adjustable output voltage, making it an ideal choice for AC/DC conversions. Furthermore, it has a power-good signal, thermal protection and short-circuit protection. It combines these features with a compact size and low weight, making it a great choice for many power supply applications.

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