MAX664CSA

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The MAX664CSA is a highly integrated 3-terminal adjustable voltage regulator that has been specifically designed for personal computer motherboards. It is a highly efficient low-voltage linear regulator that uses a switched-mode architecture to provide the best performance at all line and load conditions. This regulator has a wide range of adjustable voltage settings that support both normal and over-clocking systems. The integrated overcurrent protection and thermal overload protection ensures safe operation of the device.

The device consists of a high-performance CMOS PWM switch, an adjustable voltage reference and an adjustable current source. The operating frequency of the PWM switch can reach up to 2MHz and the current source can deliver up to 15A of current. The MAX664CSA also features a low-dropout voltage which leads to a low total power dissipation on the board.

The main purpose of the MAX664CSA is to provide a stable output voltage with very little ripple and noise. The device also features an over-temperature protection for an increased safety. The output voltage of the regulator can be set by an external resistor and is adjustable within the range of 0.9 to 4.72V for normal operation and 0.3 to 7.05V for over-clocking systems.

The MAX664CSA can be used in a variety of applications such as in personal computers, network devices, and industrial equipment or wherever an adjustable voltage regulator is required. The device is also suitable for Lithium-ion battery charging applications.

In order to understand the working principle of the MAX664CSA, we need to look at the internal block diagram. The input voltage is applied directly to the PWM switch and the current source. The PWM switch produces a series of pulses that regulate the average current coming from the input voltage. When the current coming from the input voltage exceeds the PWM switch’s current limit, the PWM switch will start to limit the current. The current source, on the other hand, monitors the output voltage and adjusts its current sourcing capability to maintain the output voltage constant.

The MAX664CSA also features a thermal shutdown which is triggered when the device temperature reaches a certain level. The thermal shutdown ensures the safety of the device in case of overheating. The device also has an auto-adjust protection circuit which limits the output voltage if the input voltage exceeds the maximum and minimum operating limits.

In summary, the MAX664CSA is a highly integrated adjustable voltage regulator that is designed for personal computer motherboards. It has a wide range of adjustable voltage settings and features an over-temperature protection and auto-adjust protection circuits to ensure safe operation. The device can be used in a variety of applications requiring an adjustable voltage regulator.

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