ISL6536AIBZ-T

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The application field and working principle of ISL6536AIBAZ-T are widely used in pressure monitor and protection IC, which are also classified as PMIC-Supervisors. ISL6536AIBAZ-T is a cost-effective monitoring IC capable of continous monitoring of multiple power rails such as power down, overvoltage and undervoltage. It is specially designed to provide a comprehensive system reset with comprehensive monitoring in a small form factor.

ISL6536AIBAZ-T has two alarm flags, alarm-L and alarm-H, in order to detect overvoltage and undervoltage. The tolerance level of alarm-L and alarm-H can be set through the reference voltage pin, which has to be connected to a stable external reference voltage source. When the voltage D follows the applied voltage rail, the voltage D dropping below the alarm-L voltage or above the alarm-H voltage, the corresponding alarm flag is asserted.

By connecting a reset pulse generator, which is triggered by the alarm flag, to the output of the reset assertion circuit, a reset pulse can be generated and applied to the reset ‘R’ pin in order to reset the system. The other pin of the reset assertion circuit, EN, is used to enable or disable the reset pulse. If this pin is left unconnected, the reset is enabled.

A watchdog timer is also integrated into ISL6536AIBAZ-T, which can also generate system reset. This watchdog timer is driven by an external clock source and an external reset input. When an external reset input is applied, the internal state is reset and the timer will start to count. If no external reset is applied, the timer will keep counting until it reaches the expiration time. At the expiration time, the system can be reset by asserting the reset output.

ISL6536AIBAZ-T has programmable power-on delay and reset operation time, which can be set by connecting a capactive delay circuit or resistor/capacitor (RC) circuit and a precision resistor, respectively. This can provide a high degree of flexibility in terms of reset and delay time setting, which is useful in protecting a wide range of power-supply applications.

ISL6536AIBAZ-T has an integrated precision voltage reference output, which can be used to provide a reference voltage signal. This reference voltage is combined with the reference voltage signal applied to the reference voltage pin, in order to set the tolerance level of the alarm-L and alarm-H signals. This is useful when ensuring that the voltage signals remain within the desired range.

In summary, ISL6536AIBAZ-T is a powerful monitoring IC for power rail protection, which features integrated programmable power-on delay, reset operation time, watchdog timer, precision voltage reference, and alarms for detecting over voltage and under voltage. As a result, it is a great choice for pressure monitoring and protection applications.

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