ISL6741IV-T

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The ISL6741IV-T PMIC voltage regulator is one of a family of DC-DC switching controllers. It is highly integrated, providing an integrated FET, precision voltage reference, and supervisory functions. It is well-suited to low voltage buck, 1-Rail buck/boost, flyback and forward applications, making it a preferred choice for cost-sensitive designs.

The ISL6741IV-T provides a high level of integration, offering wide flexibility for a range of applications, including automotive, consumer, computing and networking. The device is designed to operate from wide input voltages of 4.5V to 18V and efficiently drive FETs up to 30V. The integrated FET switches from 0.5A to 8A and can run at PWM frequencies from 200kHz to 1MHz. The integrated voltage reference and supervisory capabilities provide for a wide range of control methods.

This device can be used in a buck converter application as well as 1-Rail buck/boost applications. The ISL6741IV-T can operate as a step-down/step-up regulator with an adjustable output voltage. In a buck application, the input voltage is stepped down by the adjustable switching frequency and duty cycle of the FET. In a 1-Rail buck/boost application, the input voltage is stepped up or down as needed, depending on the load requirements. The built-in overcurrent protection helps ensure that the FET does not experience any load-related damage.

The ISL6741IV-T encompasses a range of features and options such as adjustable soft-start, adjustable overcurrent protection, and adjustable frequency, to optimize a given application. Additional features include overvoltage protection, short-circuit protection, thermal protection and undervoltage protection. All these features are available to the user through dedicated pins, which makes the device highly configurable.

The versatility of this device also allows it to operate in flyback and forward applications. In a flyback application, the device is used as an energy return path for energy stored in the inductor, providing an efficient way to store and release energy. In a forward application, the device acts as a bridge between the input and output. The incorporated voltage reference allows for accurate voltage control, which is essential for synchronous rectification.

The ISL6741IV-T provides the necessary level of integration, flexibility, and control to meet a wide range of design needs. The integrated voltage reference, low input voltage range, overcurrent protection, and other features provide a solution for designers who require a cost-effective, highly reliable and robust DC-DC controller. This device is an ideal choice for applications requiring wide input voltage flexibility, efficient regulation, and adjustable output current.

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