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LM22673QMRE-ADJ/NOPB: Application Field and Working Principle

The LM22673QMRE-ADJ/NOPB is a simple and high efficiency buck DC-DC converter provided by Texas Instruments. It is part of a power management integrated circuit (PMIC) family, and falls within the category of a DC-DC Switching Regulator. It has a wide range of applications, including industrial, computing, and consumer applications.

The LM22673QMRE-ADJ/NOPB is a Synchronous Buck Regulator, which uses two external power MOSFETs to control the current flow within the circuit. It employs a high-frequency, fixed-frequency pulse-width modulation (PWM) control architecture to produce a regulated output voltage. Furthermore, it can operate in either a constant frequency or a frequency foldback operation. Constant frequency operation is more suitable for stable fixed-output voltage applications, while frequency foldback mode is more suitable when minimizing power efficiency losses.

The LM22673QMRE-ADJ/NOPB integrates several features that make it suitable for a variety of applications. It has a maximum regulated output voltage of 4V, and its switching frequency can be adjusted between 200kHz and 2.2MHz by changing the voltage on its external frequency pin. It also features programmable soft-start and output tracking. Additionally, it has built-in over-current protection, over-temperature protection, and programmable current-limit circuitry. It has an adjustable output voltage range of 1.2V to 4.5V and an adjustable peak current limit up to 1A per phase. The LM22673QMRE-ADJ/NOPB also has an integrated transistor that can be used to disconnect the load from the input voltage source in order to bypass inrush current.

In addition to its wide range of features that make it suitable for a variety of applications, the LM22673QMRE-ADJ/NOPB is extremely efficient, with a typical efficiency of 95% and a center-tap output voltage of 2.5V. It also provides excellent Transient Response performance up to 1kHz, making it ideal for applications that require high dynamic load currents.

The LM22673QMRE-ADJ/NOPB is an excellent high-efficiency and high-performance buck regulator that is suitable for a wide range of applications requiring an adjustable output voltage. It is extremely efficient, and its features make it suitable for a variety of applications, including high-dynamic load current applications. Its low cost and wide availability make it an excellent choice for industrial, computing, and consumer applications.

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