S-85S1PC11-I8T1U

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The S-85S1PC11-I8T1U is part of a broad family of high-performance, low-cost DC/DC switching regulators designated for polarity-independent fault protection and accuracy. This product belongs to the PMIC (power management integrated circuit) category of Voltage Regulators, more specifically within DC-DC Switching Regulators. The S-85S1PC11-I8T1U is particularly suitable when higher current is required and its operation principle is based on a Boost-Flyback device. This device is broadly used in multiple fields of operation, from battery charging and power supply management, to car electronics and embedded systems.

The S-85S1PC11-I8T1U is a monolithic integrated circuit specifically designed for single-cell, one or two-step flyback boosted LED driver applications that require high accuracy, robustness, low quiescent current and low voltage drop. For these applications, the device integrates many features to implement a highly accurate Low Drop Output Voltage Regulator and/or a high-accuracy reference as well as providing fault protection and two PWM selectable output current mode control.

The S-85S1PC11-I8T1U is based on a Boost-Flyback topology, where a high-side switch, an inductor and a flyback switch are the main components. The flyback switch, being placed between the output voltage terminal and the ground, enables the regulation of the output voltage. The S-85S1PC11-I8T1U also features an advanced current limit protection which prevents overcurrent conditions. This basically means that, in the case of an overcurrent fault, the current is quickly limited and the device switches in a protected state until the fault is cleared.

Regarding the application of the S-85S1PC11-I8T1U, the device is suitable for multiple fields. This product is particularly recommended for use in automotive power supplies, battery Chargers, PDAs, notebooks, or any application where high accuracy, robustness, low voltage drop and low quiescent current are important. The S-85S1PC11-I8T1U is also used in general interface applications, as it is capable of working as a high-accuracy reference, providing voltage regulation even in rapidly changing input voltage conditions. From a safety point of view, this device also features a combination of both hiccup and foldback modes, providing the user with a high level of fault protection in order to prevent the output voltage from overshooting.

In conclusion, the S-85S1PC11-I8T1U belongs to the PMIC family of Voltage Regulators and more specifically to DC/DC Switching Regulators. It is a state-of-the-art device based on a Boost-Flyback topology, which provides accuracy, robustness, low quiescent current and low voltage drop. All these characteristics have enabled the S-85S1PC11-I8T1U to become an ideal replacement for traditional inductor-based DC to DC regulators due to its superior efficiency and operating temperature stability. Its application spans from general purpose voltage regulating to automotive power supplies and battery chargers, as well as its most common use in LED drivers.

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