SUS3123R3B

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The SUS3123R3B is an advanced DC/DC converter that can operate reliably in applications that require efficient, low-profile power supply solutions. It is designed to convert input voltage of 5V to an output voltage of 3.3V. The SUS3123R3B is ideal for applications in consumer electronics, automotive electronics and automotive power systems. It can also be used in communications, networking, storage and other industrial applications.

The SUS3123R3B DC/DC converter features an integrated, high-efficiency synchronous rectifier to minimize the number of external components. It is implemented with advanced circuit design techniques to achieve a wide input range (2.75V to 5.5V), improved efficiency, lower standby current consumption, wide temperature range, and low noise. The device features over voltage, over current and over temperature protection to increase reliability.

The SUS3123R3B is designed for step-down (buck) applications. It operates by switching the input voltage to a steady output voltage with high efficiency. This converter acts as a voltage regulator to ensure a steady output voltage to the load. It consists of two major components, a PWM controller and a MOSFET platform with high side and low side power switches. The controller regulates the output voltage by adjusting the duty cycle of the switching converter in accordance with the feedback from the load.

The high side power switch is connected to the input voltage and the low side power switch is connected to the output terminal. The controller oscillator generates the required frequency for the switching frequency. The controller then identifies the rising and falling edges of the input voltage (PWM) and adjusts the duty cycle to control the output voltage. During the active high period, the high side power switch is turned on and the low side power switch is turned off. When the low side power switch is turned off, the inductor stored charge is transferred to the output capacitor to maintain the output voltage. During the active low period, the high side power switch is turned off and the low side power switch is turned on. When the low side power switch is turned on the load can discharge and the inductor releases the energy stored in the input capacitor to maintain the output voltage.

The SUS3123R3B DC/DC converter is an ideal choice for applications that require a reliable, efficient and low profile power supply. It is designed to operate in wide temperature ranges of -40 degrees C to +85 degrees C. It also features a low noise pulse-width modulation (PWM) control to reduce the noise produced by the converter. It has a wide voltage input range of 2.75V to 5.5V, an output current range of 0A to 3A, and an output voltage of 3.3V. Its high efficiency, low standby current, and wide temperature range makes it an ideal choice for applications in consumer electronics, automotive electronics, automotive power systems, communications, networking, storage and other industrial applications.

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