APX803L-32SA-7

PMIC - Supervisors are an essential type of power management ICs (PMICs) used to organize, control, and monitor the voltage, current, or temperature of an electronic device. The APX803L-32SA-7 is a common example of a PMIC supervisor and is an easy to use, low power supervisor IC designed to provide reliable circuit-level voltage supervision with high accuracy and without user programing.

The application field of the APX803L-32SA-7 covers a wide range of products include industrial control systems, automotive, aerospace, medical and computing system, as well as other unique applications. Because of its high accuracy, this PMIC supervisor is often used to monitor the transformer voltages of AC/DC and DC/DC converters, such as those found in the power supply of memory and microprocessors. It can also be used to provide reference voltages and protection to any power supply that controls power consumption and thermal performance of electronics.

The working principle of the APX803L-32SA-7 involves monitoring the voltage at its input pins and registers a low or high logical state, indicating that the monitored system is within or outside the desired voltage threshold range. This basic voltage monitoring is adjusted with resistor dividers, to establish a voltage threshold from 1.25V to 5.5V and to guarantee the accuracy of the supervisor by protecting a system from faults like brown-out or over-voltage conditions.

The APX803L-32SA-7 has a set of adjustment pins that allows the user to change the voltage threshold and adjust the time for a reset signal to be sent. This basic feature is known as MICRO POWER WATCHDOG TIMER (MWDT). The MWDT allows the user to configure an active and inactive period, which determines how often the supervisor will send a signal to the system.

In addition to the MWDT, the APX803L-32SA-7 also features a POR (power-on reset) and monitor the power-on event, a low voltage reset and watch the power supply voltage, a BOR (brown-out reset)reset circuit to protect against transient voltage spikes, and an under voltage detection circuit that calls attention to any dips or drops in the system\'s power supply voltage.

Overall, the APX803L-32SA-7 provides an efficient and reliable solution for power management applications and can be used in a wide range of applications for both system and circuit-level voltage supervision. Its accuracy, low power consumption and flexibility make it an ideal supervisor for a variety of applications across a range of industries.