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PMIC - Voltage Regulators - DC DC Switching Controllers

The LTC3833IUDC#TRPBF is a high performance synchronous buck controller, which is suitable for powering modern CPU and GPU systems, DSP processors and other applications. By utilizing advanced current-mode architecture, this controller allows a broad range of flexibility and precision control for precise voltage regulation and power management solutions. It integrates several intelligent features to ensure and control safe operation, including overvoltage, current limit, soft start, adjustable minimum frequency, and closed loop operation.

Application Field:

LTC3833IUDC#TRPBF is an ideal solution for high current, wide input range and multiple output power supplies which require accurate regulation and fast transient responses. It is designed to accommodate a wide input range with low minimum and maximum frequency transitions. It is suitable for CPU, GPU, and FPGA applications requiring quick system responses, precise output voltage and current monitoring, and advanced power sequencing. Furthermore, it provides solutions for advanced low power and high input source designs.

Working Principle:

LTC3833IUDC#TRPBF works by using the principle of Current Mode Control. It controls the current in switching transistors and thus controls the output voltage. This works by sensing the voltage across an inductor and adjusts the output voltage accordingly. First, a gate drive signal is generated to turn on the switching power MOSFET, which connects the input voltage source to the inductor. The voltage across the inductor increases, storing energy. When it exceeds a certain level, the controller turns off the MOSFET, resulting in the energy stored being dumped into the output capacitor. This will change the output voltage magnitude. This process is repeated to regulate the output voltage.

LTC3833IUDC#TRPBF is ideal for applications that require a precise voltage control, quick transient response, and advanced current and power management features. It is also ideal for applications that need to handle high loads and wide input ranges. Its low minimum and maximum operating frequency makes it suitable for high current, low power designs.

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