APX803L20-21SA-7

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Power management IC (PMIC) is a complex electronic device designed to work in combination with semiconductor integrated circuit in mobile applications. It is also used to manage power supply and voltage levels in consumer electronics. Power management ICs are designed to handle various designs, including linear and switching power supplies in a wide range of applications. This article will focus on the application field and working principle of APX803L20-21SA-7.

APX803L20-21SA-7 is a high-voltage protector Supervisors dedicated to monitor the power supply. It is ideal for use in mobile phones, portable electronics and other handheld devices. The device offers two levels of spike and overvoltage protection, providing an adjustable response for digital and analog circuits.

This Supervisors adopts an advanced technology known as bypass surge regulation (BSR) to prevent overvoltage and power supply malfunctions. The BSR technology enables the device to quickly detect any kind of overvoltage and shut down output supply. It also minimizes the amount of energy used to prevent overvoltage by allowing the output voltage to drop slowly

In addition to this, the APX803L20-21SA-7 provides excellent performance in temperature and voltage control. The device has a built-in adjustable thermostat for voltage adjustability, which can be used to maintain a steady supply voltage within a safe range. It is also equipped with a temperature sensor for automatic temperature control and a thermal limit for increased safety.

In terms of its working principle, APX803L20-21SA-7 is configured as a bypass surge regulator. It is connected to the power supply via two P-channel MOSFETs (MOSFET 1 and MOSFET 2) and one N-channel MOSFET (MOSFET 3). When a region of higher voltage than the setpoint is detected, the N-channel MOSFET (MOSFET 3) is activated. This activation causes the voltage at the output of the regulator to drop, protecting the device from any possible overvoltage.

Other features of the APX803L20-21SA-7 include an adjustable voltage clamp function and a signal delay function. The adjustable voltage clamp function allows the device to protect itself against various levels of overvolts. It also offers a signal delay function that prevents the regulator from immediately shut down when overvoltage is detected. This function eliminates false shut downs and provides extra protection.

Finally, the APX803L20-21SA-7 is equipped with a watchdog input, which can be used to detect and prevent unwanted resets. The watchdog input can be used to trigger an interrupt or reset sequence in response to a pre- defined conditions. This can be used to provide a safety mechanism for systems that require higher levels of reliability and fault tolerance.

In conclusion, the APX803L20-21SA-7 is a high-voltage protector Supervisors designed for use in applications that require efficient and reliable power management. This device is equipped with several features that make it ideal for use in mobile phones, portable electronics and other handheld devices. With its advanced bypass surge regulation technology, adjustable thermostat, and various other safety features, the APX803L20-21SA-7 is an excellent choice for any power management application.

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