SC183CULTRT

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SC183CULTRT Application Field and Working Principle

SC183CULTRT is a DC-DC switching regulator designed to provide voltage regulation for power management. It is categorized as a PMIC (Power Management Integrated Circuit) and falls into the Voltage Regulator category, specifically a DC DC Switching Regulator. It integrates all the necessary features to enable simple implementation, low noise, and fast transient response of a switching regulator.

The SC183CULTRT offers four operating modes: fixed frequency PWM, pulse frequency modulation (PFM), pulse width modulation (PWM), and skip cycle. In the fixed frequency PWM mode, the switching frequency is set to a predetermined value. In the PFM mode, the duty cycle is modulated to create a pulse frequency which is then regulated to the set output voltage. The PWM mode uses duty cycle modulation to control the output voltage, while the skip cycle mode operates in a series of fixed frequency pulses that perform the same task as the PFM and PWM modes.

The SC183CULTRT is optimized for step-up and step-down applications with input voltages ranging from 2.7V to 24V, and output voltages from 0.8V to 25V. It includes internal loop compensation, soft-start, output current limiting, and thermal shutdown features to ensure stable, reliable operation. It also features a programmable switching frequency up to 1MHz, a low shutdown current of 0.1µA, and a wide switching-mode efficiency range up to 95%. The device is capable of driving a peak output current up to 6A, with an internal power dissipation rating of 4W.

The SC183CULTRT is intended for use in a wide range of applications, including industrial and renewable energy, automotive and battery-powered equipment, and telecom, medical, LED and computing equipment. Its features make it ideal for applications with stringent requirements, such as high efficiency and low noise. It is also suitable for applications requiring a highly reliable, long-term solution, such as avionics and on-board batteries.

In summary, the SC183CULTRT is an optimized DC-DC switching regulator that is ideal for applications requiring high efficiency and low noise, and long-term reliability. It offers a wide range of features, including adjustable switching frequency and programmable bo-load current limit. Its wide input and output voltage range, along with its high current and power dissipation ratings, make it a suitable choice for a variety of industrial and commercial applications.

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