LNK363DG

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The LNK363DG is a high performance, low power, simple switch-mode off-line power-supply controller IC. It is designed to support multiple isolated and non-isolated AC/DC and DC/DC converter applications. The LNK363DG integrates primary control, sensing and protection functions into a single solution and supports a wide range of output power configurations.

The LNK363DG is a complete off-line switch-mode power-supply controller IC with integrated AC-DC converter and programmable delay functions. It is designed to provide low component count, low profile and low EMI boundary condition designs. The IC features a sense resistor mono-directional drive stage with multiple power stages and over-voltage and under-voltage protection that provides significant component count reduction. Additionally, automatic temperature performance control and programmable delay eliminate design complexity. The output control feature allows the user to adjust the output voltage or switch-mode duty cycle to provide wide range of load transient performance.

The LNK363DG is a monolithic integrated solution that is composed of a low power, fast response low to medium current MOSFET driver and several integrated handshaking and sensing functions. The MOSFET driver contains a 400mV reference voltage, a shared phase locked loop to PWM comparator and a sense resistor. This reduces component count, improves system performance and provides accurate control of the switch-mode duty cycle. The sense resistor also provides feedback of the output current to the current sensing circuit allowing faster dynamic reaction of the output voltage.

The LNK363DG employs programmable operation delays to eliminate the need of external components. This is useful in applications where output, input or safety parameters need to be accurately set. It also reduces component count and cost. An integrated condition monitor provides accurate and updated information of the operational status of the output stage, making it easier to implement over-current and over-temperature protection.

The LNK363DG is ideal for applications requiring power factor correction (PFC) and soft switching. It enables high efficiency operation and system integration, resulting in reduced component count and improved reliability. Additionally, it supports multiple output configurations and offers an adjustable frequency operation for superior noise and EMI reduction.

The LNK363DG offers several advantages in terms of integration, efficiency and performance. Low component count and simple circuit implementation result in reduced system cost and space, increased power density and improved power conversion efficiency. The MOSFET driver is also highly resistant to spurious tones, allowing improved system performance.

Overall, the LNK363DG is an excellent solution for high performance, low power offline switch-mode power-supply applications and is ideal for applications requiring PFC and soft switching. It is highly integrated, low cost and low power solution for multiple isolated and non-isolated AC/DC and DC/DC converter applications.

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