LNK6668V

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LNK6668V is a type of PMIC, AC/DC Converters, and Offline Switchers. It is a high-efficiency, single-ended primary-side regulator that operates from direct AC mains input and helps make the development of your plug and play power systems easier. This wide range of PMICs, AC/DC Converters, and Offline Switchers can provide system designers the flexibility to tailor their power solutions to the exact requirements of their applications.

The LNK6668V is an integrated circuit that operates with an input voltage of up to 145 VAC. It consists of an internally compensated low-side primary-side regulator, current-mode control, soft-start, frequency fold-back, an internal power FET, and a PWM error amplifier. It also has thermal protection, overcurrent protection, and under-voltage lockout protection. The combination of these many features make the LNK6668V one of the most efficient and reliable power solutions for small to medium size AC/DC applications.

The primary working principle behind the LNK6668V is to provide constant-voltage (CV) and constant-current (CC) output capabilities. The voltage regulation is provided by an internal error amplifier that compares an internal reference voltage with the output voltage of the device. When the output voltage exceeds the reference voltage, the amplifier reduces the drive to the power FET, thus reducing the output voltage. Likewise, when the output voltage is lower than the reference voltage, the amplifier increases the drive to the power FET, thus increasing the output voltage. In addition, the soft start feature of the LNK6668V helps to reduce the inrush current and eliminate false triggering of the protection circuit.

The current mode control provides good linear regulation, fast line transient response, and excellent overload protection. The overload protection circuit monitors the load current and shuts down the device if the current exceeds a predetermined limit. Additionally, the frequency fold-back feature of the device assists in reducing cost and improving system efficiency, while the current-mode control helps to keep the output current and voltage within steady state values.

The LNK6668V is an excellent power solution for any AC/DC applications that require minimum output power consumption and high reliability. It is capable of delivering up to 3A of continuous output current, with a maximum output voltage of 40V. The excellent transient response, wide range of output voltages, and soft start feature make this a great choice for any AC/DC application. Additionally, it has various protection features such as short circuit and over-current protection that make it very reliable for use in many applications.

In summary, the LNK6668V is a great choice for any AC/DC applications that require low output power consumption, high reliability, and excellent transient response. It offers excellent protection features, a wide range of output voltages, and efficient current mode control. All these features make it a great solution for any AC/DC application.

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