APX803L05-42SA-7

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PMIC, or power management integrated circuit, is an integrated circuit (IC) specifically designed to manage power consumption of various components and subsystems require that a steady voltage for proper functioning. It is also known as voltage supervisors, which is a type of shutdown supervisor IC that monitors and maintains the input power of a system.

APX803L05-42SA-7 is a low power, low voltage supervisor and reset IC family that provides power-on reset (POR) and power-Down reset (PDN) functions. It is suitable for micro--controllers, DSP and similar microprocessor systems. It\'s a member of the supervisory products family, and it provides a solution to system designers to monitor and maintain the power of the system circuit.

The APX803L05-42SA-7 application with respect the field and the working principle is a very crucial one. The APX803L05-42SA-7 is a highly versatile and cost-effective voltage supervisor IC with a single package and it can be used in variety of applications. The following are some of its applications and underlying working principles.

Applications

APX803L05-42SA-7 is used extensively in computers and peripherals, such as in computers, printers, scanners, personal digital assistant (PDA) and point-of-sale (POS) terminals. It is suitable for applications that need to monitor power and reverse voltage protection, as well as brown-out and over-voltage detection. It is applicable in gaming consoles, TVs, set-top boxes, modem and routers, cellular phones, digital still cameras and MP3 players. It can also be used in DC/DC converters, automotive electronics, and for battery-powered devices.

Working Principle

The basic principle of the APX803L05-42SA-7\'s working is to monitor and maintain the input power of a system. It has a wide input operating range, from 0.8V to 4.6V, and can detect a voltage drop to preset levels. When it detects a voltage drop, it will trigger a reset to indicate that the power monitoring is out of range. The reset pulse width is adjustable and can be set to any duration between 200 ns and 1 sec. It also comes with an additional manual reset input in case of power-down events.

APX803L05-42SA-7 also has an active-low reset output that is suitable for microcontroller reset in systems and can be used to detect over-temperatures. It has two advanced reset timers called “timeout” and “WDT” that are used to measure the timeout duration or system watchdog. The timeout timer has an adjustable duration of up to 1 second and can be used to detect changes in the input power, while the watchdog timer is used to ensure that the reset is triggered after a given period of time from the power-on event.

Besides, this IC has an extra function named “power fail detector” which can detect power fail quickly. It is important in preventing data corruption and loss of system settings in case of power fail situations. It also has a power-on delay timer, which is a configurable delay time before the reset output is asserted, ensuring the system is stable. Lastly, its output features an open drain output which allows it to be connected to multiple devices within its operating voltage range.

In conclusion, APX803L05-42SA-7 is a voltage supervisor with a single package that provides a solution to system designers to monitor and maintain the power of the system. It is used in computers, TVs, cell phones and other electronic devices to monitor input power and reverse voltage protection, as well as brown-out and over-voltage detection. Its useful functions such as power fail detector, power-on delay timer and timeout timer make it a very powerful and cost-effective voltage supervisor.

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