APX810S05-44SR-7

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Power management integrated circuits (PMICs) are electronic components responsible for regulating and providing power to other devices in a given system. This can involve managing the main power rail, distributing power to peripherals and monitoring power states in a more dynamic environment. A subset of PMICs are prevalent in the modern application market and are referred to as supervisors.

The APX810S05-44SR-7 is an example of one such supervisor and is used to monitor system power rails and reset devices when predetermined conditions are met. PMICs such as the APX810 are utilized in almost any electronics product but are predominantly used in a range of consumer and battery operated devices such as smartphones, industrial control systems and other hand held products.

The APX810 is a 45V, one-time programmable integrated supervisor device located in a 3mm x 3mm quad flat package. It features a single Vcc /Vcs power supply input, two outputs and one reset input. Common applications involve VCC monitoring, watchdog timers, power supply sequencing and power supply tracking.

The APX810 is also seen in applications that involve analog and digital power management as well as microprocessor power management. The on-chip one-time programmable logic allows for custom applications and can be used for over temperature, power rail monitoring and timing operations.

The in-system programmable APX810 contains a watchdog timer, a supply voltage detector and a reset timer intended for use in power failsafe applications, often in systems that must reset reliably even in the event of power failure. Furthermore, the supervisor’s programming flexibility allows for user-defined reset constraints to be incorporated, such as minimum/maximum voltage level detection and/or timeout protection.

An internal oscillator frequency of 1.2 kHz helps coset a rest time window of between 32ms and 8s. This ability helps in simple power sequencing operations and makes the supervisor ideal for use in a range of system applications where the requirement of an external oscillator can be omitted.

The APX810 is a surface-mountable system reset supervisor integrated with two open drain outputs and one reset input. The outputs, Reset 2 and Reset 3, are open-drain and operate from 0.8V and can sink certain currents levels accordingly.

The reset input, RESET , is active low and provides a method for external devices to manually generate a reset event. The APX810 monitors and compares the external Vcc/Vcs input to the internal Vcc/Vcs references. When triggered, reset signal is sent to the outputs and power-reset cycle is initiated.

The APX810S05-44SR-7 has multiple internal cells which feature specific power-on reset characteristics and routines. The supervisor offers over current protection and adjustable reset timing control with a temperature range of -40 to 85°C. Aside from its industrial uses, the APX810 is found in consumer related applications, such as laptop computers and consumer products such as television set-top boxes, microwaves and DVD players.

The APX810s05-44SR-7 is an efficient and reliable system reset supervisor that can help ensure compliance with a range of safety regulations. By automating reset functions, the supervisor helps simplify and improve the dependability and integrity of the system power rails and the overall performance of the device.

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