LM2575-12YWM-TR

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The LM2575-12YWM-TR is a monolithic voltage regulator IC specially designed to provide fixed (12V) output voltage from input voltage as low as 3.3V. It is typically used in switching regulator circuits, and provides class B EMI performance. The LM2575-12YWM-TR belongs to the DC DC Switching Regulators product family of PMIC (Power Management IC) products and is the leading supplier of integrated voltage regulator products for the automotive, embedded systems, communications infrastructure and energy industries.

The LM2575-12YWM-TR offers a wide range of features and benefits, including an adjustable 2kHz - 1MHz switching frequency, high output accuracy, adjustable soft-start function, and cycle-by-cycle current limit. The adjustable soft-start feature helps provide a smooth start-up, while the cycle-by-cycle current limit helps prevent output short circuit and improves stability under overload conditions. Additionally, the LM2575-12YWM-TR offers integrated current limiting, thermal shutdown protection, and overvoltage protection.

The LM2575-12YWM-TR is designed for general purposes, and is capable of operation from an input voltage as low as 3V up to an input voltage as high as 30V. It also features a maximum output current limit of one amp and a minimum output current limit of 1mA. The switching frequency of the LM2575-12YWM-TR can be adjusted from approximately 2kHz to 1MHz by varying an external resistor.

The working principle of the LM2575-12YWM-TR is quite simple. When an input voltage is applied, the device will automatically switch its output voltage between two levels, depending on the state of the switch. When the switch is turned on, the output voltage of the regulator will rise to the desired level, typically 12V in the case of the LM2575-12YWM-TR. When the switch is turned off, the output voltage will drop to a minimum level, typically 0V. As the input voltage changes, the switching frequency of the device will be adjusted to maintain a constant output voltage, ensuring a stable output voltage despite fluctuations in the input voltage.

The LM2575-12YWM-TR is a versatile, easy-to-use switching regulator IC, suitable for a wide range of applications, but particularly suitable for automotive, embedded systems and energy applications. The device’s wide input voltage range and adjustable switching frequency makes it highly suitable for applications that require tight voltage regulation over a very wide range of input voltage. In addition, the device’s integrated current limiting, thermal shutdown and overvoltage protection features help protect the device from damage due to overload conditions.

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