ISL95813IRZ

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ISL95813IRZ is a special purpose voltage regulator from the family of PMIC devices. This standard 3A Active-Droop Regulator is a low quiescent current buck-boost voltage regulator with an integrated boost section for optimal transient performance and minimal loop dynamics. The device is designed to regulate the output voltages at either 3.15 V or 5.15V, depending on the user\'s needs. It is often used in post-regulation applications such as portable electronics and automotive systems.

The ISL95813IRZ operates in a buck-boost mode with a boost section that allows the device to start up as a boost into a no-load/low-load condition and then operate in buck-boost mode when the load current exceeds the switching threshold. The output voltage is regulated by dropping or boosting the output voltage depending on the load demand. This ensures that the output voltage is always above or below the threshold voltage when the current limit is engaged.

The device features a low quiescent current of 4.3mA and a maximum load current of 3A. It is protected from over-voltage, over-current, reverse polarization, and thermal overload. The device also features an adjustable current limit and voltage margining for over-voltage protection and stability. The integrated boost section is capable of up to 17V input voltage, allowing the device to regulate a wide input range.

ISL95813IRZ is designed to meet the needs of a wide range of applications, including automotive, consumer electronics, and industrial. It can be used to post-regulate dc-to-dc buck or boost converters, compensation in voltage regulator modules, embedded systems, and peripherals. The device is fully integrated, allowing for high efficiency, small form factor, and ease of integration.

The device utilizes an external capacitor and mosfet output switch as the main components. The external capacitor is used as the energy storage element. The output switch is used to control the peak inductor current and regulate the output voltage, depending on the load demand. The device implements a fan-in/fan-out scheme, which allows the load current to be shared by multiple outputs.

By selecting the proper external components, the device can be used for a variety of applications. It can regulate the output voltage from 3.5V to 17V and offers current limit options from 50mA up to 3A. The voltage margining option allows for an over-voltage protection margin above the maximum voltage for stability and discrimination.

The ISL95813IRZ is a highly efficient, low quiescent current voltage regulator that is designed to post-regulate the output of dc-to-dc buck or boost converters. With its adjustable current limit and voltage margining, the device is suitable for a wide range of applications including automotive, consumer electronics, and industrial.

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