NCV8509PDW18R2G

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NCV8509PDW18R2G is a linear voltage regulator, which is integrated into PMIC (Power Management Integrated Circuits) to regulate the voltage level of the system and the current using feedback circuit. It can maintain a constant output voltage with a minimum difference between the desired output voltage and the actual output voltage, even under conditions with large fluctuation of input voltage and output current.

The NCV8509PDW18R2G is a wide input range current-mode PWM controller. This linear voltage regulator has an integrated high voltage, high current power MOSFET with a maximum output current of 18A and an output voltage range from 1.54V to 25V that can maintain a very low part temperature. It also has low operating and startup currents, making it suitable for uninterrupted power supply systems.

One of the main applications for the NCV8509PDW18R2G is in the field of power supplies. It can provide a stable voltage to a wide range of AC power supply systems, such as ATX power supplies, notebook power supplies, audio amplifiers, etc. Moreover, it is suitable for use in low noise applications due to its low switching frequency and high PSRR capability. It is also suitable for automotive, industrial and communication applications.

The work principle of the NCV8509PDW18R2G is similar to most PWM controllers. The input voltage and current are converted into a single signal that is required by the controller to generate the PWM waveform. The output voltage is then regulated by a feedback loop which compares the output voltage to the reference voltage and adjusts the duty cycle accordingly.

In order to ensure stable and precise output voltage, the device has several innovative circuits, such as Spread Spectrum Modulation (SSM), Advanced Slope Compensation (ASC), and the Over Voltage Protection (OVP). These features effectively reduce the peak voltage level, reduce component temperature, and provide overvoltage protection. The device also includes other protective features such as over-current protection (OCP) and thermal shutdown protection.

In summary, the NCV8509PDW18R2G is an excellent linear voltage regulator that can provide a stable voltage to a wide range of AC power supply systems. It has a wide input range, high current capacity, and several innovative protective features. It is suitable for applications in power supplies, automotive, industrial and communication fields.

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