LNK6436D-TL

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The LNK6436D-TL is an offline switcher IC that connects a full-range AC source to a DC output supply. It provides a wide input range of 88VAC to 264VAC, which is suitable for applications that require an international operating range of 85-265VAC. The output provides adjustable 3.3V to 48V max. output, with up to 10A peak current and up to 8A continuous current. The total power dissipation of the device is 65W.

The LNK6436D-TL is typically used in offline switched-mode power supplies, AC adapters, and other applications including desk top supplies and low-cost home appliances. It is also suitable for lighting applications, including LED dimmers and fluorescent ballast. Due to its wide input voltage range and high efficiency, it is ideal for a variety of applications that require AC to DC power conversion.

The LNK6436D-TL operates in discontinuous conduction mode (DCM). In this mode, it uses the primary side sawtooth oscillator to periodically burst the transistor if the feedback loop has a valid value. During the operation of the power supply, the startup time is minimized due to the sawtooth burst allowing the supply to inhibit overtemperature and overvoltage operation. The hysteretic control loop ensures that the LED light is accurately controlled within the set output voltage range.

To provide a reliable power supply design, the LNK6436D-TL has various protection features. It includes overvoltage, overcurrent, and over-temperature protection to enable reliable power conversions. The over-temperature protection can be implemented using either the sense resistor at the drain of the main power switch or with an external thermistor. Additionally, the protection circuits can also guard against short circuits or open loop situations.

The LNK6436D-TL also features a state machine for LED dimming control, providing a smooth and even dimming of the LED load. It also includes fault detect pins, which is ideal for diagnosing any potential problems. The device also includes an adjustable line current limit to protect the device from overload and over-temperature conditions.

In summary, the LNK6436D-TL is a universal offline switcher IC that is suitable for a variety of applications such as AC/DC power conversion, LED dimming, and other domestic appliance power supplies. It has a wide input voltage range and high efficiency and provides various protection features to ensure reliability. Its state machine for LED dimming is also ideal for precise and uniform dimming. So, no matter what the application is, the LNK6436D-TL is the perfect choice for efficient and reliable power conversion.

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