APX803S05-46SA-7

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PMIC, or Power Management Integrated Circuits, are sophisticated devices that help manage a variety of power related functions on today’s sophisticated electronics systems. The APX803S05-46SA-7 is a power monitoring IC (PMIC) under the Supervisors classification. This part offers active voltage supervision and programmable current limiting protection. It is a low-cost, small package, low power solution with additional features to provide robust protection, flexible operation, and ease of use.

Application Field

APX803S05-46SA-7 is designed for use in high performance systems, in applications including computers, communication, consumer electronics and automotive. Its programming provides enhanced operating flexibility, extending the safety margin when used in environments with voltage spikes or brownouts. The undervoltage lockout (UVLO) threshold is adjustable between 0.9V and 6V.

The APX803S05-46SA-7 offers integrated voltage monitoring and programmable current limiting protection that prevents the system from overloading. Its over-current limiting safeguards the system from more than normal source current drawn from the voltage source. The part has low quiescent current (down to 10 µA) and three-state output for low-cost, low-power protection.

Working Principle

APX803S05-46SA-7 monitors the input voltage and compares it to the programmed voltage level. If the voltage drops below the programmed limit, the power controller output is disabled and the device powers down. When the voltage is restored, the power controller remains in standby until the voltage reaches a preset level and the input power is turned on again.

The output of the APX803S05-46SA-7 is protected by a programmable current-limiting circuit. This circuit monitors the system’s input current and prevents it from exceeding a predetermined level. If the current limit function is triggered, the output will be disabled, allowing the system to return to normal operation once the overcurrent condition is removed.

The APX803S05-46SA-7 includes an integrated overvoltage protection (OVP) circuit. This circuit is designed for applications with power sources that exceed the maximum input voltage and prevents system damage. If the programmed threshold is exceeded, the power controller will disable the system until the voltage is restored below the programmed limit.

In addition, the APX803S05-46SA-7 offers comprehensive features such as soft-start and overtemperature protection. The soft-start function reduces inrush currents during power-up and prevents overvoltage spikes. The overtemperature protection prevents the system from overheating.

The APX803S05-46SA-7 is a low-cost and low-power protection device that is suitable for use in a variety of applications. Its active voltage supervision, programmable current-limiting protection, overvoltage protection, soft-start and overtemperature protection makes it an ideal choice for modern electronic systems.

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