ISL9111AEH30Z-T7A

The ISL9111AEH30Z-T7A is a high efficiency, dual phase, synchronous step-down voltage regulator IC. It is a member of the Intersil\'s low power voltage switching regulator family and is designed to reduce input voltage to the required output voltage in most applications. This device consists of two independent, high-efficiency synchronous DC/DC step-down converters with up to 3A output current per phase. The voltage switching regulator can operate with input voltage up to 28V and output voltage down to 0.6V. The ISL9111AEH30Z-T7A supports adjustable switching frequency between 0.45 MHz to 2.5 MHz, making it a high-efficiency, low-noise solution for compact system designs.

The ISL9111AEH30Z-T7A device incorporates an integrated low side FET, enabling a synchronous step-down voltage regulator in a very small size. The device is ideal for powering digital and analog ICs in battery-powered and portable consumer electronic applications. It supports user programming of the output voltage and switching frequency. It also can be programmed with different voltage scaling and soft start options. Other features include an onboard power good indicator, a light load power save mode, and over-current protection.

The ISL9111AEH30Z-T7A is ideally suited for use in process control, medical equipments, and smart TVs. It is also an excellent choice for use in portable battery-powered devices and consumer electronics applications, due to its high efficiency, low-noise output, and low-power operation mode. Additionally, the device can be used in applications where a high-efficiency, low output noise, and low power solution is required.

The device works by first providing a voltage divider from the input voltage source to obtain the desired output voltage. This is done by a constant frequency current-mode switching architecture. This architecture provides for precision output voltage regulation with excellent dynamic performance, and transitions with no hard overshoot or undershoot. The output voltage is then regulated by the feedback loop, which monitors and adjusts the output voltage to maintain the desired voltage level.

The ISL9111AEH30Z-T7A incorporates additional safety features, such as thermal shut-down and open loop detection. The integrated under-voltage protection feature prevents the voltage regulator from starting up at an input voltage level below the set start-up threshold. Furthermore, the device also includes a soft-start function that prevents loud power-on surges during the start-up phase.

In summary, the ISL9111AEH30Z-T7A is a high efficiency, dual-phase synchronous step-down voltage regulator IC. It is capable of providing up to 3A of output current per phase and offers adjustable switching frequencies between 0.45 MHz to 2.5 MHz. Integrated protection features such as thermal shut down, over-current protection, open loop detection, soft-start function, and under-voltage protection provide robust performance and high reliability. The device is suitable for powering digital and analog ICs in battery powered and portable consumer electronic applications.