AS1918S-T

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PMIC Supervisors are monitoring and controlling integrated circuits which are mainly used to ensure system stability, safeguard system resources and provide reset facilities when necessary.
AS1918S-T is a supervisor IC which is designed to monitor, reset and protects critical power device within a system. It is mainly used in automotive applications such as infotainment, navigation and telematics systems. This is due to its power-on reset, watchdog timer and power protection capabilities.
AS1918S-T Application Field:
AS1918S-T is suitable for monitoring and safeguarding of complex system powered by single voltage or dual voltage supply. It is suitable for application in automotive and other embedded systems, especially those where power sequencing is important and large current loads are present.
The AS1918S-T can provide over temperature protection, voltage supply monitoring and power sequencing for single or dual supply applications. It can also provide adjustable watchdog timer with selectable time-out periods. Its built-in weak pull-up pull-down capability allows it to detect open drain outputs.
AS1918S-T Working Principle:
The AS1918S-T uses a dual-input power protection circuit to protect against over voltage protection, over current shutdown and power-on reset. It can detect multiple input voltages and monitor the level of both input voltages. The AS1918S-T can also monitor the system temperature and reset the system if the temperature exceeds a certain limit. The AS1918S-T also has a watchdog timer which can be set to a certain time-out period and can reset the system if it is running longer than the set period.
The built-in pull-up and pull-down circuit in the AS1918S-T allows it to detect open drains. Once the open drain is detected, the AS1918S-T can prevent further damage to the system by resetting it. The AS1918S-T can also detect weak signals that may occur due to noise or other system conditions and can bridge them in order to protect the system. It also has a Software Reset feature that can reset the entire system in the event of a software emergency.
In addition to the above functions, the AS1918S-T also provides short-circuit protection, system reset, power-on reset, reset latch, and temperature sensing. It also provides adjustable voltage scaling, reset timing, and watchdog timer reset options. All of these features aid in protecting the system from accidental disruptions or power issues.
Due to its various features, AS1918S-T is ideal for automotive and other embedded systems which require power supply, protection and timing features. Furthermore, its n-channel MOSFET technology features low power dissipation and reliable operation. Its multiple output options make it suitable for a wide range of embedded applications. Therefore, the AS1918S-T can be used for various automotive embedded applications such as infotainment, navigation and telematics systems.

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