ISL9003AIEHZ-T

ISL9003AIEHZ-T Application Field and Working Principle

The ISL9003AIEHZ-T is a 3A step-down fixed output regulator integrated into a 8-pin TDFN package, suitable for use as a rechargeable power supply for digital products, personal electronics, and mobile equipment. It supports an input voltage range of 4.75V to 14V, and comes with very low quiescent current (IQ) of 10μA @ Vout = 3.3V, making it suitable for portable power applications. This product falls into the category of PMIC (Power Management Integrated Circuits), more specifically, voltage regulators, and more specifically, linear voltage regulators. This product is capable of delivering up to 3A of continuous current output, and is a fixed output product. It is designed to work as a step-down regulator, supplying a stable voltage output. The output voltage is adjustable, and the part has a range of 4.75V to 14V for input voltage and an output range of 0.6V to 5V for the output voltage.The ISL9003AIEHZ-T can be used for a wide variety of applications from small to large, from digital products to personal electronics, from mobile equipment to distributed power systems. It can be used in portable power applications where very low quiescent current (IQ) is required. It can also be used in industrial applications such as monitoring and control systems, medical equipment and telecommunications.

Working Principle

The ISL9003AIEHZ-T is an integrated circuit that works as a 3A fixed output step-down regulator. Its input voltage range is 4.75V to 14V, while the output voltage can be set to between 0.6V and 5V. It has an on-chip switching regulator, a low dropout linear regulator, an inductor, and a comparator. The circuit works as follows: The switching regulator converts the input voltage to a higher voltage and the current is inductor-stored. The current is then converted to a stable voltage output through the linear regulator. The comparator then monitors the current and voltage against a reference and adjusts the output accordingly. This allows for a stable and regulated output voltage, regardless of input voltage variations.

Benefits

The ISL9003AIEHZ-T offers several benefits over other power regulators. It is a compact, low-cost, high-performance part, with excellent thermal performance. It also integrates many components into a single package, making it suitable for applications where size is of utmost importance. Additionally, its low quiescent current makes it well suited for portable power applications. It also offers a wide input operating range and adjustable output, providing customizable and reliable power delivery to a variety of loads.

Conclusion

The ISL9003AIEHZ-T is an integrated circuit designed to work as a 3A fixed output step-down regulator. It is suitable for use as a rechargeable power supply for digital products, personal electronics, and mobile equipment, and offers low quiescent current, making it suitable for portable power applications. The ISL9003AIEHZ-T is a low-cost, high-performance part with numerous benefits, such as thermal performance, a wide input operating range, adjustable output, and integrated components into a single package.