LM5046SQX/NOPB

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The LM5046SQX/NOPB is a wide boundary mode high-performance switching regulator from Texas Instruments. This application provides a highly efficient solution for offline power supply, AC-DC converters, and auxiliary voltage converters for certain high-power applications. It is designed for operation from a wide range of input voltage and can switch up to 2A of output current.

The LM5046SQX/NOPB range uses a variable frequency current-mode control scheme, which ensures high system transients accuracy. Additionally, the product incorporates a quasi-resonant blanking technique, which provides frequency selectivity while allowing the switching frequency to be reduced during light load and idle conditions. The part also includes several features to simplify system design, such as external soft start, internal compensation, and performance-enhancing features like short-circuit protection, over-voltage protection, and line under-voltage lockout.

The LM5046SQX/NOPB features two differential amplifiers to drive its control loop, where the output voltage and voltage across the current sense resistor, are compared and the resulting error is used to adjust the output voltage accordingly. The error signal is then integrated to establish the switching frequency. When the differential signal from the first amplifier is greater than or equal to 8mV, it is sent to the second amplifier to adjust the output voltage. This process is repeated until the output voltage is equal to the set voltage.

The external components of the LM5046SQX/NOPB are also designed to ensure an efficient operation for applications. The power inductor, input and output capacitors, current sense resistor, and other components should be selected carefully and in accordance with the application requirements. The regulating voltage (Vout) and current (Iout) should also be adjusted and set properly to ensure the highest efficiency.

The LM5046SQX/NOPB is a highly efficient and cost-effective power solution for different power supply applications. It features a wide boundary mode high-performance switching regulator, top-notch components, and built-in control circuitry to ensure high accuracy and efficient operation. Additionally, its low-power operation makes it an ideal choice for high-power applications and offline power supplies.

The LM5046SQX/NOPB is offered in a 10 pin Micro-Size DIP package that fits into any low power space. With its innovative design and efficient operation, this switching regulator is suitable for a wide range of applications, including AC-DC converter, offline switcher converter, and power management of circuits with global battery charging systems.

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