ISL6569CRZ-T

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The ISL6569CRZ-T is a member of the DC-DC Switching Controllers series of voltage regulators. It is a single-phase stepped-down DC-DC controller that operates over a wide input voltage range of 4.5V to 60 V and provides a wide variety of features, including programmable high/low voltage output protection and fast controllable soft-start, precision input and output voltage sequencing, and adjustable switching frequency. In order to provide flexibility and improved performance in cost sensitive power conversions, the ISL6569CRZ-T offers programmable frequency and current limit, PFM/PWM operation selection, and low quiescent current.

The integrated digital loop control is a major feature of the ISL6569CRZ-T, allowing for improved line regulation, fast transient response time, and high efficiency operation. The control loop can be adjusted with a variety of settings and feedback components, providing excellent dynamic control between source and sink, as well as improved parallel/load tracking performance. The total integrated resistance is minimized, minimizing power losses due to conduction and thermal losses. In addition, the ISL6569CRZ-T has several features to improve system stability and EMC performance even further, such as built-in frequency synthesizer, switching frequency interruption, spread spectrum mode, and a temperature-compensated reference.

The ISL6569CRZ-T is a highly reliable and flexible DC-DC switching controller. Its wide input voltage range and programmable features make it an ideal solution for a variety of mobile and embedded applications. The device is ideal for use in low and mid-power applications including low power automotive, industrial, and medical applications. Additionally, the device is available in a variety of package options, including WINDFORCE, TQFP, QFN, and SOIC.

The ISL6569CRZ-T has a variety of operational modes, allowing users to configure the device for the best performance for their application. In particular, the functions of input voltage regulation and output voltage regulation can be separated. The ISL6569CRZ-T also has a programmable switching frequency, allowing designers to select the optimal switching frequency for their application.

This device operates using Pulse Frequency Modulation (PFM). In this mode, the controller outputs a fixed-width pulse, whose frequency is determined by the output voltage. As the output voltage rises, the pulse frequency increases, and as the output voltage falls, the frequency of the pulses decreases. This method of controlling the output voltage reduces power losses, increases efficiency, and reduces ripple. The PWM mode offers improved output voltage regulation and transient response, but increases the ripple of the output voltage.

Overall, the ISL6569CRZ-T is a programmable, highly-versatile DC-DC switching controller, offering fast controllable soft-start, precision input and output voltage sequencing, and an adjustable switching frequency. The integrated digital loop control technology further enhances system performance, while the wide input voltage range and available package options allow it to be adapted to a variety of applications. It is a great solution for a range of low and mid-power applications.

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