APX803L-43SA-7

The APX803L-43SA-7 is a type of PMIC (power management integrated circuit) - Supervisors. PMIC - Supervisors are a group of integrated circuits designed to help manage the power needs of a specific system. The APX803L-43SA-7 is a voltage supervisor that monitors the voltage in a system, and is capable of shutting down the system when certain voltages are detected. It is used in a variety of applications, including industrial and commercial, defense, and automotive applications.

The APX803L-43SA-7 is a 3.3V, Bi-Directional, Resettable Over-Voltage/Under-Voltage Detection device with an adjustable voltage threshold from 2.6V ~ 5.3V and an active-low reset signal output. It offers a watchdog timer reset with an adjustable timeout period from 1.4s ~ 62s, and has a wide operating temperature range of -40°C to +125°C. It also features an adjustable and resettable time base which can be set to 1, 4 or 8ms approximately. It has an 8-pin, SOIC surface mount package, and is available in both surface and tape & reel packaging.

The APX803L-43SA-7\'s working principle is based on the detection of voltage across two comparators. When the input voltage reaches or drops below the voltage threshold programmed by the threshold register, the corresponding comparator output is asserted and the gate of the reset output transistor is opened. The reset signal is then asserted. This reset signal will stay active until the input voltage is pulled either above or below the preset threshold. The watchdog timer has a separate control that allows it to be enabled or disabled, and the timeout period can be adjusted with the timeout period adjustment pin.

The APX803L-43SA-7\'s applications range from microprocessor-based systems to industrial control applications, such as SCADA systems, controllers, and embedded systems. It is suitable for monitoring various parameters, such as input power, input voltage, battery voltage, and processor temperature. It also supports a variety of industrial control and communication systems, including industrial control panels, power supplies, industrial instrumentations, and semiconductor test and development systems.

In conclusion, the APX803L-43SA-7 is a versatile PMIC - Supervisors ideal for a variety of applications. Its main purpose is to monitor the voltage of a system and reset it if the voltage exceeds or drops below a certain threshold. It also includes a watchdog timer for added protection, and can be used in both industrial and commercial applications.