APX809S00-40SA-7

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Power management integrated circuit (PMIC) is a key element of an efficient power system. It is usually a multi-channel controller for managing a wide range of voltages as well as regulating and managing power supply output. The APX809S00-40SA-7 is a supervisor IC for monitoring voltage and current levels in a variety of applications and systems. This paper will discuss the application field and working principle of the APX809S00-40SA-7.

The APX809S00-40SA-7 is a multiple-pin supervisor IC carried by Apex Microelectronics. This IC is designed to monitor, detect and regulate overvoltages, undervolts and overcurrent conditions with reset synchronization. It is typically applicable in voltage/current monitoring and protection applications such as in LED drivers, notebooks, desktop and server power supplies, home electronics, telecommunications and consumer electronics. It is an essential safety element, protecting multiple systems and components from damage due to excessive power supply voltages and currents.

The APX809S00-40SA-7 integrates several functions into a single chip, making it ideal for applications where a small form factor is needed to fit into tight spaces. The device comes in SOT-23-6 and DFN-6 packages, providing 7 different threshold and voltages settings with up to 6.3V monitoring and 10mA operating current. It provides level shifting, voltage protection, and current monitoring in a compact format with an operating temperature range from -40 up to +125 degrees Celsius.

The APX809S00-40SA-7 comes with several features such as adjustable reset-out delay times and threshold accuracy. The reset-out delay time can be adjusted to prevent false resetting by selecting the right delay time with the MSEL pin. It also offers a precision internal voltage reference (VREF) to ensure accurate voltage detection. It also features adjustable reset threshold comparator levels to guarantee that different components are protected even in varying supply voltages.

In terms of its working principle, the APX809S00-40SA-7 draws a low current from the voltage sources to be monitored and compares the voltage to its onboard voltage reference. If the Voltage sources reach or exceed the preset threshold level, the APX809S00-40SA-7 will trigger a reset signal to the system’s components. If the Voltage sources follow the preset threshold levels, the reset signal will stay deactivated.

The APX809S00-40SA-7 is a single-channel voltage supervisor with power on reset (POR) function and reset out signal. It features foldback reset circuitry that helps improve robustness of the system in case of severe overload conditions or power supply transients. The device is also capable of detecting constant voltages or transients thanks to its adjustable delay time. Additionally, the APX809S00-40SA-7 has an enable/disable pin to control the enable/disable status of the chipset.

The APX809S00-40SA-7 is ideal for applications where voltage and current monitoring and regulation is important. It is especially useful in LED drivers, power supplies, home electronics and other applications where high accuracy and stability are required. It has a small form factor and a wide operating temperature range to ensure that it is suitable for any environment. Its adjustable reset-out delay is also an advantage for performance-sensitive systems, as it ensures that system components are not reset unnecessarily.

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