BQ51221YFPT

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BQ51221YFPT Application Field and Working Principle

BQ51221YFPT is a highly integrated power management integrated (PMIC) circuit designed for modern portable computing devices like laptop, Notebook, Android tablets, and other mobile computing products. Its mission is to maximize the battery life of these products, ensuring that their users experience a comfortable and uninterrupted working environment. This article will discuss the application field, main features and working principle of the BQ51221YFPT PMIC.

Application Field

BQ51221YFPT is typically used in low-power and space-constrained mobile computing products, as it offers a large variety of power management features. The device has been designed to provide solutions for systems with one or more processors and memory devices. In addition, it is also suitable for applications with a large number of low-power I/Os, such as touch screens and buttons. Furthermore, it is capable of powering the majority of analog and digital systems consuming up to a few watts of current.

It can be used in combination with several I/O power supplies, such as USB, SDIO and SIM cards, allowing the products to be powered and charged through those input signals. The BQ51221YFPT is compatible with all major processor architectures, including Intel Atom, ARM, and MIPS.

Main Features

The BQ51221YFPT PMIC offers a number of features to meet the requirements of portable devices. It includes an integrated buck converter, which provides up to 4A of output current, as well as two LDO regulators with up to 1.5A of output current. It also has a built-in power monitoring system, which has a wide voltage range of 1.8V to 6V and can be used for monitoring the voltage and current of the system.

The device also features an integrated programmable-voltage control feature, which can be used to program the voltage of the system. It also has a dedicated USB power supply that can provide up to 1.5A of charging current for USB-enabled devices. In addition, the BQ51221YFPT is equipped with an over-temperature protection system, which will shut down the device if it exceeds a certain temperature.

Working Principle

The working principle of the BQ51221YFPT PMIC is quite simple. When the user turns on their device, the PMIC will detect the input signal of the power supply and start to regulates it. The integrated buck converter then takes the input signal and reduces its voltage, while also boosting its current, to deliver a regulated output signal. This regulated output is then used to power the system’s processors and memory devices.

The BQ51221YFPT also uses a dedicated USB power supply to provide up to 1.5A of charging current for USB-enabled devices. The PMIC also has an over-temperature protection system, which will shut down the device if it exceeds a certain temperature. Additionally, it also has a programmable-voltage control feature, which can be used to program the voltage of the system.

Conclusion

In conclusion, the BQ51221YFPT PMIC is a highly integrated and power efficient PMIC designed for modern portable computing devices. Its main features include an integrated buck converter, two LDO regulators, and programmable voltage control. The device also has a built-in power monitoring system, as well as a dedicated USB power supply, and an over-temperature protection system. Finally, the working principle of the BQ51221YFPTPMIC is quite simple and straightforward.

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