PS8A0034WE

Series:	*
Part Status:	Active

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Introduction to PS8A0034WE

Power management integrated circuits (PMICs) are increasingly playing a critical role in our daily life, granting us access to ever-increasing range of technology advances. The PS8A0034WE is a PMIC which allows a designer to monitor and control power in computer and portable electronics applications. It is specially designed to reduce the number of external components, while maintaining low power dissipation and current consumption.

Application Field

The PS8A0034WE is ideal for applications in a variety of systems such as notebook, tablet, PC and portable media player. It has built-in thermal protection and monitors over-current situations, reducing component count and ensuring complete compliance with safety legislation. It also has power saving functions and can be used to extend battery life for portable devices.

Features

The PS8A0034WE has several features which make it an attractive choice for designers. It has a wide input voltage range from 7.5V to 25V, allowing it to accept a range of input voltages from various sources. It also has a high power efficiency of over 90%, making it energy efficient and allowing for longer battery life. It also has a low standby current for a high level of power savings. The PS8A0034WE also features over-current protection, thermal protection and an adjustable output voltage range of 0.91V to 3.3V, enabling designers to tailor the output voltage to the application. It also provides automatic power up and power down sequencing.

Working Principle

The PS8A0034WE operates on a buck converter topology. When the input voltage is higher than the output voltage, the power stage switches ON, charging up the output capacitor through an inductor. When the voltage reaches the set output voltage, the power stage switches OFF. The current then flows from the inductor back to the input, generating a negative voltage at the output which is used for current limiting.The voltage regulation of the PS8A0034WE is further enhanced by a voltage-mode control loop described as Constant On Time Control (COT). This loop implements a proportional-integral (PI) controller to regulate the output voltage and maintain the stability of the system. This ensures that the output voltage stays within the acceptable range, even in the presence of large load transients.

Conclusion

The PS8A0034WE is a powerful PMIC which has been designed to reduce the number of external components while maintaining low power dissipation and current consumption. It has a wide input voltage range and adjustable output voltage, as well as features such as over-current protection and thermal protection. It operates on a buck converter topology and uses a Constant On Time Control loop to regulate the output voltage. The PS8A0034WE is ideal for applications in a variety of systems such as notebook, tablet, PC and portable media players, and is a great choice for power management in many computer and portable electronics applications.

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