VIPER16LN

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The VIPER16LN is a high-performance integrated power solution tailored to a wide range of low-power microcontroller applications. The VIPER16LN is a two-phase non-isolated synchronous buck regulator that operates between an input of 2.7 V to 17 V and includes an integrated low RDS(ON) high-side FET switch. It offers an output voltage adjustable from 0.9 V to 12 V and provides a maximum load current of 600 mA when powered from a 12 V input source. The VIPER16LN also includes a wide range of integrated features including programmable soft-start, programmable frequency, programmable line compensation, and thermal foldback. These features help to minimize external component count, provide exceptional operating performance and extend the life of the user\'s product.

The VIPER16LN is particulary well-suited for use in offline switch mode power supplies. At its core, an offline SWITCER is a simple single-stage AC/DC converter that transfers power from an AC supply to a DC load. The VIPER16LN can be combined with a power factor correction (PFC) controller to create a complete power solution. The VIPER16LN offloads the PFC controller from all the critical LOOP control and provides accurate output voltage regulation and additional safety protections.

The VIPER16LN is also becoming increasingly popular in a variety of portable consumer and embedded system applications, due to its low cost, small size, and high efficiency. The VIPER16LN is suitable to generate the auxiliary power needed to drive system peripherals such as fans, sensors, and memory cards. Furthermore, it can optimize the power sequence, providing system and power supply design flexibility and meeting various product requirements.

The working principle of the VIPER16LN is based on the classic non-isolated synchronous buck topology, where the input power is first converted to a DC voltage and then stepped down to the desired output voltage through a switching element. The VIPER16LN integrates a low RDS(ON) high-side FET and a low RDS(ON) synchronous rectifier, making it one of the most efficient and cost-effective integrated solutions available in the market today. It can achieve greater than 96% peak efficiency, depending on the operating configuration.

The VIPER16LN is designed to operate in either a continuous conduction mode, or a current-mode control, depending on the particular application. A voltage loop is used to regulate the output voltage, providing accurate and stable operation. The control system is complemented by the integrated features such as programmable soft-start, programmable frequency, programmable line compensation, and thermal foldback, which allow system designers to achieve the desired performance.

The VIPER16LN is an excellent solution for a range of low-power microcontroller applications and enables power system designers to save cost and time with a high-performance, precise, and efficient solution. Utilizing the integrated features, as well as its continuous mode/current-mode operation flexibility, the VIPER16LN is a versatile, robust, and cost-effective choice for power system design.

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