LNK623PG

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The LNK623PG is a monolithic AC/DC converter and offline switcher utilizing Pulse Width Modulation (PWM) control techniques. It is a member of the Linear Technology\'s family of high performance, low profile, and low cost, Integrated Circuits (ICs). This device integrates two chips into one package, combining a half bridge, switching MOSFET with a PWM controller. The LNK623PG is designed primarily to provide power and voltage converter functions with low standby power, high efficiency, and advanced features and protection.

The application field is wide, but some common applications are Desktop PCs, LCD Monitors, Set Top Boxes, Recordable DVD players, and similar applications. The device is designed to cover a wide range of AC input voltage including a range of 90 to 264 volts at 50-60 Hz. It is capable of providing output power within the range of 15W to 60W for universal mains applications. The IC offers several protection functions such as built-in over current protection, output over voltage protection, and undervoltage lockout (UVLO) etc.

The LNK623PG works by converting an AC mains voltage to a DC output. The input power is first rectified, then filtered and converted to a predetermined DC voltage level. A PWM controller maintains the DC output voltage at the desired level. The pulse width of the PWM signal also provides over current protection. When the load exceeds a certain threshold, the pulses will become shorter, limiting the current to the load. The device is configured with a single stage, center tapped transformer, which is used to provide galvanic isolation.

The LNK623PG also features a “Sleep mode” or “Stand-by mode” which reduces the power consumption in the no load condition and hence reduces the heat dissipated by the system. The sleep mode also extends the operating life of the device, as with lower temperature there is less chance of wear and tear due to excess heat.

Therefore, the LNK623PG is a versatile product having multiple applications and an optimal design for maximum efficiency. With its advanced protection features and enhanced performance, this device is an excellent solution for providing a high quality DC output power with reduced energy consumption. Thus the device offers unique benefits to its users and is ideal for high power applications that require maximum efficiency and reliability.

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