LM25066PSQ/NOPB

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The LM25066PSQ/NOPB, belonging to the Power Management IC (PMIC) family, is primarily designed for Specialized applications. This rugged, wide-operating voltage, 3A synchronous buck regulator is organized into a compact 4mm x 4mm QFN-16 package and provides an easy-to-use solution for many customer applications. The LM25066PSQ/NOPB offers a convenient and cost-effective alternative for many buck applications. In addition, it has an adjustable output voltage setting ranging from 0.8V to 5V. This device is well-suited for several applications requiring high efficiency buck conversion.

The LM25066PSQ/NOPB using a unique interleaved switching technique maximizes the efficiency, while allowing a smaller inductor and phase spread capacitors to be used, thus reducing component counting. This device is also equipped with a controlled pulse-width modulation scheme, allowing a flat switching frequency over a wide load range, resulting in low audible noise.

LM25066PSQ/NOPB is a highly integrated switching regulator that provides a constant voltage, constant current control and programmable soft-start capability in a small footprint package. It is designed for high power applications where stability and efficiency are critical.The LM25066PSQ/NOPB’s synchronous regulation scheme provides three distinct advantages: 1) Low component count reducing board space and component cost; 2) High efficiency over a broad load range; 3) Low output voltage ripple. The device also utilizes a fixed voltage clamp current control scheme that provides stable current-mode control for constant current applications. It is designed to provide constant current to high current LEDs, and its low minimum on-time allows it to power most LEDs from a low pulse-width modulated (PWM) duty cycle.

The LM25066PSQ/NOPB’s adjustable soft-start feature provides an adjustable current ramp during start-up and automatically shuts down if the voltage or current exceed a preset level. The soft-start feature reduces inrush current during turn-on and reduces output capacitor size. The device also features an enable control pin, undervoltage lockout (UVLO), and thermal overload protection. Its integrated low resistance MOSFETs provide excellent switch efficiency.

The LM25066PSQ/NOPB’s primary application is in battery-powered applications, such as those found in embedded systems and handheld communications equipment. It is also well-suited for high power applications, such as switching regulated power supplies, high-brightness LED lighting, and other power conversion applications. It provides an excellent solution for space-constrained, high-efficiency power system designs.

In summary, the LM25066PSQ/NOPB is a high-performance synchronous buck regulator that offers the advantages of low component count, high efficiency, and low output voltage ripple. It is ideal for applications that require constant current and/or constant voltage control, and its integrated MOSFETs provide excellent switch efficiency. The device’s adjustable soft-start feature reduces inrush current during turn-on and its thermal protection prevents damage due to excessive temperature.

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