ISL6146CFRZ-TK

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The ISL6146CFRZ-TK is a low-voltage device from Intersil, a provider of power management solutions. It is an over-current protection and over-voltage protection device with an integrated boost regulator. Its application field covers a range of applications, including power supplies, automotive systems, industrial control, and automation markets.

The ISL6146CFRZ-TK contains a two-part series regulator. The first part is an active current limiting circuit, designed to respond to over-current situations. When an over-current event happens, this part of the device reduces the current to the protected system. This process of active current protection is frequently referred to as “fusing”. The second part of the series regulator is a boost regulator, which increases the input voltage if it drops below a certain level. The device will switch on the boost regulator if the input voltage drops to within 8% of the minimum operating voltage.

In terms of working principle, the ISL6146CFRZ-TK provides a robust over-current protection and over-voltage protection solution in a very small form factor. The over-current protection is enabled by two series mosfets which sense the current and trips if the current exceeds its programmed limit. The over-voltage protection is enabled by a voltage regulator, which will reduce the voltage if it exceeds the over-voltage threshold.

The ISL6146CFRZ-TK can also be used as an ideal diode. It will safely forward current from the input to the load, while blocking current from the load back to the input. This feature can help reduce system wear, as the current will not be reversing direction, as it would with a standard diode.

Overall, the ISL6146CFRZ-TK is an excellent device for providing both over-current and over-voltage protection, as well as ideal diode protection in a very small form factor. It provides robust protection in a variety of applications, including power supplies, automotive systems, industrial control, and automation markets.

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