FD3L072RG

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The FD3L072RG application field concerns circuit protection, and its working principle involves the latching of bi-level over-current protection. It is a unique, robust, and easy-to-implement SmartFuse over-current protection solution for a range of consumer and commercial applications. It is especially suitable for applications where load currents can vary, such as charging docks, battery chargers, and other consumer products.

The FD3L072RG solution offers the benefit of a highly adjustable current limit. Using on-chip trim resistors, it can be adjusted to match the desired current rating. This helps reduce system power consumption and provides better overall protection. It also features a trip latch that prevents inadvertent resets due to high capacitive loads.

The FD3L072RG has two main functional blocks: a driver, which turns the FET off when an over-current condition is detected, and a comparator, which monitors the current and checks if it has exceeded the programmed threshold. If it has, the driver turns off the FET and an over-current shutdown is triggered.

For more reliable protection, the circuit also monitors the voltage across the FET source and drain. If the voltage exceeds the maximum rated value, the circuit shuts down. Additionally, the circuit is designed to protect the device from dynamic current spikes. It responds to excessive current by temporarily reducing the current limit to a safe level.

The FD3L072RG is designed to provide maximum protection to systems such as automotive, industrial, consumer, and instrumentation, as well as general purpose electronics applications. With its adjustable current limit, it provides protection against both excessive current and over voltage conditions. Additionally, its latching feature provides extra protection by preventing inadvertent resets due to high capacitive loads.

The device is packaged in a tiny Surface Mount package, allowing it to be easily integrated into small boards and applications. With its adjustable current limit and integrated latching feature, the FD3L072RG SmartFuse is a great solution for any number of circuit protection applications.

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