MC33063ADG

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The MC33063A is a high-performance integrated switching regulator control circuit with a minimal external component count. It features very high efficiency, a precisely regulated output voltage, over-current and short-circuit protection, and inrush current limiting. It is available with fixed output voltages of 5 or 12 V and is ideal for both single and double ended offline applications.

The MC33063A provides an easy-to-implement integrated solution for cost-sensitive offline DC-DC converter applications ranging from 5 to 18 V DC input voltage range, ideal for low- to medium-power applications including cell phones, digital cameras, and battery-powered equipment, even where the input voltage is below 3 V. The chip implements the basic functions of a DC-DC converter—namely, regulation (pulsed width modulation control), activation and protection functions—in a single-chip device.

It is a pulse width modulation voltage regulator that can regulate the output voltage both up and down with respect to a reference voltage. It operates by setting up a current pulse that is proportional to the sensed output voltage, and then controlling the duty cycle of the current pulse (configured by a linear control circuit) to adjust the output voltage so it matches the reference voltage. The current pulse is then used to drive an output switch, voltage doubler, or charge pumps to regulate the output voltage.

The MC33063A has all the necessary features for such an application, such as inrush current limiting and a very low-dropout, high-precision regulator to ensure a steady output voltage. It also has an adjustable voltage limit, providing over-voltage protection for the output. In addition, it provides a power good signal, which indicates when the output voltage is regulated and ready for use.

The MC33063A provides a simple, cost-effective solution for single- or double-ended applications. It features very high efficiency, up to 95%, and up to 2 A load current. In addition, it is available in very small surface-mounted packages and can be easily adapted to both standard and custom applications.

The MC33063A is an ideal choice for applications in various market segments, such as consumer electronics, automotive, industrial, and medical. It is well suited for applications that require an efficient, reliable, and cost-effective solution, such as mobile phones, tablets, battery-powered equipment, and even power supplies for remote measurement and control systems.

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