ISL6561IRZ-T

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ISL6561IRZ-T Application Field and Working Principle

ISL®6561IRZ-T is an ultra-low Iq, low volt contact start-stop IC that is specially designed for automotive applications. It is a special purpose voltage regulator designed for use as an alternator voltage regulator for on/off control of devices, such as a starter motor, power inverter, or buck converters. This device features a wide operating range from 2.7V to 16V, a low quiescent current, and a simple contact start-stop interface.

Application Field

The ISL6561IRZ-T is designed for applications that require frequent on/off switching of devices like a starter motor, power inverter, or buck converters. In automotive applications, this device is used as an alternator voltage regulator to control the amount of current going to the device, ensuring that it operates correctly. It is also suitable for military, industrial, and commercial applications such as LED lighting, industrial cooling, and solar panel applications.

Working Principle

The ISL6561IRZ-T contact start-stop is a voltage-controlled switch that is triggered by a voltage source. The device includes a comparator and a low-voltage switch. The input voltage is compared to a reference voltage. If the input voltage is higher than the reference voltage, the switch is opened and the device is turned off. If the input voltage is lower than the reference voltage, the switch is closed and the device is turned on. The threshold voltage is set by the user using an external resistor. The device also features a remote enable/disable pin to provide additional control and flexibility.

The ISL6561IRZ-T also features a current limit circuit that prevents device overcurrent or stalls from occurring. When the current limit is reached, the device automatically shuts down. This feature ensures that the device does not suffer from dangerous levels of current or voltage and provides robust protection for the device.

The ISL6561IRZ-T also includes protection against inrush current, over-voltage, over-temperature, under-voltage, and ESD. The device supports a wide operating temperature range of -40°C to +125°C, making it suitable for automotive, military, and industrial applications.

Conclusion

The ISL6561IRZ-T is a special purpose voltage regulator designed for use as an alternator voltage regulator for on/off control of devices such as a starter motor, power inverter, or buck converters. It is designed for applications that require frequent on/off switching and features a wide operating range, low quiescent current, and protection against inrush current, over-voltage, over-temperature, under-voltage, and ESD. The ISL6561IRZ-T is suitable for military, industrial, and commercial applications and is perfect for automotive applications.

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