LM26480QSQX-CF/NOPB

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The LM26480QSQX-CF/NOPB is a step-down DC/DC converter that belongs to the family of PMIC (Power Management IC) Voltage regulators. It has both linear and switching regulator characteristics that make it a great choice for various applications. This versatile device has a standard 3-terminal buck configuration with integrated compensation and soft responsive gate drive which makes it a good choice for automotive and industrial applications.

The LM26480QSQX-CF/NOPB has a programmable frequency operating range from 500 kHz to 1.2 MHz allowing for higher switching frequency for applications where higher output voltage ripple is acceptable. It also has an adjustable current limit which allows for the precision current limit control for stable operation and a part-selectable soft start. With a 7V to 60V input voltage range and an output voltage of up to 25V, the LM26480QSQX-CF/NOPB can handle large input/output voltage drops.

The device further features one external resistor programming output voltage, ambient temperature compensation and thermal shutdown. It is available in the µMAX-8 and MicroSize packages, making it a perfect fit for applications with limited board space. The LM26480QSQX-CF/NOPB has a higher power density compared to other buck regulators and can easily deliver up to 3A of output current with low input/output voltage differential.

The working principle of the LM26480QSQX-CF/NOPB is simple yet effective. The device uses a two-stage, high-side and low-side synchronous buck topology to provide an adjustable output voltage in an efficient and reliable way. The high-side switching transistor is operated at fixed frequency, while the low-side switching transistor is modulated in a high- frequency PWM mode to achieve the desired output voltage.

The PWM controller senses the output voltage and adjusts the conduction of the switching transistors and inductor current accordingly. The output voltage can be programmed by connecting an external resistor and due to its high integration, the LM26480QSQX-CF/NOPB operates over temperature, ambient conditions and load changes without further adjustments.

The LM26480QSQX-CF/NOPB is ideal for various applications such as low power microprocessor and automotive systems, portable consumer electronics and medical equipment. With its high power density, adjustable output voltage and integrated power MOSFETs, the LM26480QSQX-CF/NOPB is the perfect device for any application where power management and step down DC/DC conversion are needed.

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