PS8A0012WEX

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PS8A0012WEX is a monolithic power management integrated circuit that features integrated functions in order to reduce power consumption, enhance system performance and optimize space requirements in many portable electronics applications.

The PS8A0012WEX contains a low output ON/OFF regulator (LONR) for supplying power to circuit parts at the appropriate voltage; a rectifying power supply (RPS) to convert AC voltage to DC voltage; three step-down buck converters (1V to 3.3V and 0.3V to 1.8V) for providing power to system parts; a General-purpose Output Pin (GPOP) to provide control signals to other circuit parts; two Universal Serial Bus (USB) ports to support USB devices. Additionally, the PS8A0012WEX helps reduce Standby power by 80%, minimising power dissipation.

The PS8A0012WEX has a wide input voltage range (3V to 18V) that helps support a wide variety of source inputs. Moreover, the LONR regulates the input voltage for the buck converters, allowing for low output voltage accuracy and adjustable output current. Its various control functions offer optimal buck performance to maximise energy savings. It also provides over-current, over-voltage and over-temperature protection.

The PS8A0012WEX is designed primarily for mobile devices, tablets, smart phones and other low power, low profile products. The chip integrates the functions of a low-power regulator, rectifier, voltage regulator, control signals, and USB ports into one small package, providing an optimal power solution for portable applications. It also features low quiescent current for more power savings and less heat production. The combination of the features make it an excellent choice for applications requiring energy efficiency and small board space.

The working principle of PS8A0012WEX is based on the concept of energy conservation. Firstly, it uses the low output ON/OFF regulator to regulate the input voltage for the buck converters and adjust the output current for load protection. Secondly, the rectifying power supply converts AC voltage to DC voltage. Thirdly, it provides various control functions to optimise buck performance and maximise the energy savings. Finally, the device provides two USB ports to support USB devices. Overall, the PS8A0012WEX integrates the power management functions into one small package, thereby providing an efficient and small board space power solution.

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