SIC417CD-T1-E3

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PMIC - Voltage Regulators - Linear + Switching

The SIC417CD-T1-E3 is a medium-power switch-mode, medium-voltage linear regulator hybrid IC with a wide range of features and functions.

This regulator has two main modes of operation: linear and switching mode. In linear mode, the device regulates output voltage using an internal transistor and adjustable reference voltage, following a common linear regulator design. In switching mode, the SIC417CD-T1-E3 uses a power MOSFET and an adjustable current source to switch between the input and output voltages, providing higher efficiency than linear mode.

These features make the SIC417CD-T1-E3 a versatile device for a wide range of applications. It is suitable for regulating output voltages in systems such as power supplies and DC-DC converters, battery-powered devices, and automotive systems.

Application Fields

• Power supplies and DC-DC converters
• Battery-powered devices
• Automotive systems
• Mobile devices
• Industrial systems

Working Principle

The SIC417CD-T1-E3 regulator consists of two main components: the control circuit and the power MOSFET. The control circuit consists of an adjustable reference voltage, a comparator, and an error amplifier. The error amplifier compares the feedback voltage from the output to the reference voltage and adjusts the gate voltage of the power MOSFET accordingly. When the output voltage is below the specified level, the error amplifier increases the gate voltage of the power MOSFET, allowing more current to flow through it and resulting in an increase in the output voltage. This process is repeated until the output voltage reaches the desired level.

In switching mode, the SIC417CD-T1-E3 uses a current source to control the current being supplied to the power MOSFET. The current source is adjusted according to the output voltage, allowing the device to regulate the output voltage precisely.

Conclusion

The SIC417CD-T1-E3 is an efficient and versatile regulator suitable for a wide range of applications. Its two main modes of operation, linear and switching, make it suitable for use in both low-power and high-voltage applications.

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