APX803L-44SA-7

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The APX803L-44SA-7 is a supervisor from the family of PMICs (Power Management Integrated Circuit). It is a cost-effective, single-channel circuit for always-on supply in hand-held and battery-powered systems. As a supervisor, the APX803L has the ability to detect voltage (which must be within ±25%) relative to its reference input and supervise its own power supply.

The APX803L-44SA-7 has an operating temperature range from -40°C to 85°C. It is designed to meet the low-power, low-cost, and low-noise requirements in mobile applications. It is led in the market for its innovative design, which reduces size and improves reliability. Furthermore, it requires a low standby current of only 5 μA, thus prolonging the lifespan of the device.

The primary application fields for the APX803L-44SA-7 are hand-held devices and portable systems. Its low power consumption makes it suitable for extended battery operation, while its versatility allows it to work in a variety of environments. Additionally, it is a great choice for applications that require cost effective and highly reliable mechanical switches for power-on orders.

The working principle behind the APX803L-44SA-7 is the integration of a power-on reset (POR) circuit and a watchdog timer. The POR circuit monitors the power supply and resets the system whenever the voltage drops below a predetermined threshold. The watchdog timer monitors the system activity, resetting it if the system does not respond within a preset period of time. When combined, these two functions provide power-on reset and watchdog timer functions that keep the system operating at all times.

In conclusion, the APX803L-44SA-7 is an ideal choice for hand-held and battery-powered systems. The low power consumption, high reliability, and versatile features make it a great option for various applications. In addition, its integrated POR and watchdog timer circuit give it a unique ability to protect the system from power-on and activity problems.

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