ISL97522IRZ-T

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Power Management IC - Specialized

ISL97522IRZ-T is a low noise, low dropout linear regulator optimized for low power to high band gap input sources such as Schottky diodes and photo-voltaic cells. This specialized power management IC is specifically designed for communication, switching regulator, instrumentation and other related applications. The device provides an adjustable output voltage from 0.8V to 5.5V, with a maximum output current of 3A, and offers a typical dropout voltage of only 180mV.

In the applications of ISL97522IRZ-T, the simple implementation of additional circuit components is needed. It has a power-on reset circuit with a fixed 200 ms (typical) timeout, which will reset devices with a wide range of voltage levels. The device also features an input-under-voltage lockout (UVLO) circuit and multiple current & thermal protection features. In addition, it provides high efficiency and low noise operation in spite of input voltage and load conditions.

Working Principle of ISL97522IRZ-T

ISL97522IRZ-T’s built-in Linear Regulator circuitry draws power from the input voltage source and converts it to the desired output voltage level. A feedback network adjusts the output voltage accurately to match the request for the load. The bi-directional current sense circuit works with a P-channel MOSFET to ensure accurate current limiting. The ISL97522IRZ-T also has a thermal shut down feature that prevents the device from overheating due to excessive power dissipation.

The LED indicator on the ISL97522IRZ-T assists in visual status checks. The LED is powered when the output voltage is delivered correctly. The LED has a current limit of 1.0 mA and is rated to operate over the specified temperature range. The LED is also compatible with active-high logic.

The ISL97522IRZ-T provides a wide compliance range of 0V to 25V and has an adjustable low dropout regulator. Stability is ensured by the device’s on-board voltage reference, allowing the output voltage to be accurately set with a single resistor. Low-noise operation is ensured by careful layout and shielded construction. The device features a maximum operating temperature of 105°C, making it suitable for high-temperature applications.

Final Thoughts

The ISL97522IRZ-T offers a robust and highly integrated power management solution for a wide range of communication, switching regulator, and instrumentation applications. Its ability to efficiently convert input voltages from Schottky diodes and photo-voltaic cells makes it an ideal choice for those seeking a reliable, low noise, low dropout linear regulator with a wide range of current and thermal protection features. The adjustable output voltage from 0.8V to 5.5V, and typical dropout voltage of 180mV make this versatile specialty IC an ideal solution for those needing a low power but efficient power management solution.

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