ISL97901CRZ-TK

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ISL97901CRZ-TK, developed by Intersil Corporation, is a current-mode, primary-side regulated, non-isolated buck controller. It is part of the line of PMIC-LED Drivers, which are designed to improve the efficiency of electronic designs. This device has an extended operating voltage range of 6.5V to 36V, making it suitable for a wide range of applications. It provides improved output efficiency over traditional current mode controllers due to its unique internal design. In addition, it has integrated protection features that allow for robust operation to support the application\'s overall performance.

The main purpose of the ISL97901CRZ-TK is to allow efficient control of external components connected between the power source and the load. It is suitable for single-stage or multi-stage applications such as Single Ended Primary Inductor Converter (SEPIC), Forward, Flyback and Multi-Output (MO) topologies. It is capable of driving up to 4 independent outputs, with each output having its own regulation and current limit point. This device also features a programmable, thermal foldback feature to protect the device and its components during overload conditions.

The ISL97901CRZ-TK works by regulating the output voltage and current by feedback signals from the output voltage and current. The internal design allows for a very accurate control of the output, while maintaining very low power dissipation. The output voltage is regulated via a digital signal, with a minimum duty cycle of 1/256th. This digital signal can be used to adjust the output voltage for various applications and to attain higher efficiency. The output current is regulated by an analog signal which is monitored by an internal ADC, allowing for lower noise and ripple current from the system.

In addition to the core functionality of the ISL97901CRZ-TK, it also includes a number of protection features that improve the overall reliability and performance of the application. These include under-voltage lock-out, over-current protection, overtemperature protection, and input/output reverse-current protection. These safety features help prevent accidental or unexpected damage to the IC and its components.

Overall, the ISL97901CRZ-TK is a versatile and efficient non-isolated buck controller well suited for various applications. It has an extended operating voltage range of 6.5V to 36V, allowing it to be used in a wide range of applications. It features low power dissipation and high efficiency, thanks in part to its internal design and integrated protection features. These features make it an excellent choice for designers looking to improve the efficiency of their electronic designs.

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