ISU0205D15 Power Supplies - Board Mount

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DC-DC converters are electrical components used to convert single-stage power sources from one DC voltage level to another. Designed to allow designers flexibility in voltage source selection, the ISU0205D15 device is designed to step-up (boost) a low-voltage DC source up to 15V with efficiency rates of over 93% while still supporting maximum load currents up to 300mA. The ISU0205D15 device features an integrated high-efficiency inductor and requires no external components, making it an ideal solution for Standby and Power-on applications with wide input voltage range from 1.7V to 5.5V.

The ISU0205D15 device operates by using an internal high speed MOSFET switch and an integrated high-throughput energy storage inductor. The device is cycle-by-cycle current limited with an adjustable switching frequency range. This enables the user to easily optimize the power consumption and body size for their application. The integrated low resistance MOSFET switch also provides voltage support capabilities while maintaining both high efficiency and low quiescent current.

The ISU0205D15 device is ideal for applications that require a compact DC-DC boost solution with high efficiency and wide operating range, as it features a wide input voltage range of 1.7V to 5.5V, an adjustable switching frequency range, no external inductor, low quiescent current, and a typical efficiency of up to 93%. It can be used in combination with a simple battery connection to create an optimal solution for powering low power circuits. The ISU0205D15 device can also be used for powering infrared sensors, voltage level shifting, position detection of movable sensors, battery backup systems and many other applications.

The device is composed of a controller, a MOSFET, inductor, input and output capacitors. The controller takes the input voltage and turns the MOSFET on and off at a frequency determined by the inductor current running through it. This switching action is what causes the voltage transformation from the inputs voltage to the output voltage. The output voltage is limited by the maximum voltage level supported by the device and the characteristics of the component values used. The inductor helps to reduce any high frequency components generated by the switching action, while the input and output capacitors help to reduce any noise present on the input and output voltage bias.

In addition, the ISU0205D15 device features a programmable soft-start feature that allows the device to slowly ramp up the output voltage during start-up. This feature helps to reduce inrush current and limit stress on other components and the source of power. The device also features an over-current protection feature that protects the IC from catastrophic damage in the event of a short-circuit.

The ISU0205D15 device offers excellent performance for a wide range of DC to DC conversion applications. It is designed to be a compact solution that requires no external components, while still providing adjustable switching frequency and over-current protection. It offers a high efficiency and wide operating range, providing designers with a valuable tool for powering low power circuits and transforming voltage levels. With its wide range of features, the ISU0205D15 is an ideal choice for many DC-DC conversion applications.

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