SC470ITSTRT Integrated Circuits (ICs)

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SC470ITSTRT is a DC-DC switching controller ideal for various power supply designs such as AC/DC, DC/DC and DC/Battery converters. This powerful device combines fast transient response and high efficiency with ease of use, making it well-suited for a wide range of applications including laptops, desktop PC\'s, NAS, cellphones, and other appliances.

The SC470ITSTRT has a fixed frequency, current-mode pulse width modulated (PWM) control that drives an external power switch.The SC470ITSTRT\'s advanced features provide flexibility in application-specific design. For instance, it provides a programmable soft-start feature during start-up with protection against short-circuit fault conditions, open-loop fault detection, and brown-in/brown-out (BI/BO) protection. It also has an adjustable frequency that allows it to be optimized for stability and power switching efficiency. Additionally, compensating and trimming the output voltage can be done quickly and accurately.

The SC470ITSTRT\'s fixed frequency current-mode control offers better load and line regulation versus typical voltage-mode designs. It also includes a high gain, internal reference feature which provides a ±1% accurate output voltage. This helps to reduce cost and component count, while providing superior performance. Moreover, the open-loop fault detection feature supports automatic restart after over-voltage and over-current faults, resulting in lower component count and cost savings.

The SC470ITSTRT supports constant current, constant voltage and continuous conduction mode control, providing improved efficiency and output power. In addition, it includes a power ontrol-enable (PCEN) pin that supplies the enable signal according to a programmed duty cycle. This improves system efficiency and reduces dynamic and static power losses.

The SC470ITSTRT is designed to be compatible with a wide range of components, and can easily interface to an external switch, inductor and capacitor. It also provides an accurate power-on reset and controls the external switch critical conduction parameters to ensure world-class performance. The device has an internal temperature monitor that prevents overheating, and built-in protections against startup glitches, under voltage, and overvoltage.

The SC470ITSTRT has a wide input voltage range, from 3.3V to 2V, allowing for efficient power transfer, and ease of design. Moreover, the device is optimized for low power dissipation giving it a longer battery life and lower cost. With its large number of features and its suitability for a variety of small and large scale projects, the SC470ITSTRT from Intersil is becoming an increasingly popular choice for power supply design.

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