ST662ABD

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ST662ABD is a DC-DC switching regulator which belongs to Power Management Integrated Circuits (PMICs) - Voltage Regulators. It is a Stauffacher type regulator which works by driving MOSFETs in a buck configuration.

The ST662ABD provides a gate drive solution for buck-type DC-DC switching regulators. It is designed to drive MOSFETs from a 3.3V voltage input, allowing up to 5A of continuous gate drive current. It features an internal clock for synchronization, over current protection, and over temperature protection. It also has an additional input for external PWM signal, which can be used for more accurate voltage regulation.

It is suitable for both synchronous buck as well as step-down dc-dc conversion. The ST662ABD can be used in DC-DC power-supply applications that require high efficiency and fast switching speeds. It can be used in a variety of applications, including mobile phones, laptops, PDAs, automotive electronics and consumer electronics.

The main components of the ST662ABD are a control logic section, two P-channel MOSFETs, and two N-channel MOSFETs. The control logic section controls the on/off status of the MOSFETs by issuing control signals to the gate drivers. The two P-channel MOSFETs operate in parallel, and the two N-channel MOSFETs operate in a buck configuration.

When the switch is open, the input voltage is connected to the output voltage through one of the two P-channel MOSFETs. The P-channel MOSFET will draw current, causing the output voltage to drop.The two N-channel MOSFETs are connected in a buck configuration, with the source of one connected to the source of the other and their drains connected together. When the switch is closed, the current will flow through the N-channel MOSFETs, increasing the output voltage. The connection and control of the MOSFETs is managed by the control logic block.

The ST662ABD has an adjustable duty cycle (‘ON time’) which is used to control the amount of time that the switch is closed. The duty cycle can be adjusted through the control logic. The ST662ABD also has an internal over-current protection which shuts off the device when the current exceeds a certain level

The ST662ABD is a highly efficient, reliable, and flexible DC-DC switching regulator. It is suitable for a wide range of applications, including mobile phones, laptops, PDAs, automotive electronics and consumer electronics. It is able to provide fast, accurate and reliable regulation of output voltages. It is also easy to use and configure, requiring minimal external components and providing an adjustable duty cycle.

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