LNK6664E

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The LNK6664E is a high-efficiency, high-performance AC/DC integrated circuit for offline power applications, designed for use in low power applications and low power electronic systems. This device is an integrated circuit, providing all the features of a full offline converter. The LNK6664E features a single-stage power solution, enabling full power conversion from AC to DC, with an efficiency of up to 98%. The LNK6664E features fully programmable control, with single-pin interface, asynchronous control of DC output, and supports an adjustable switch frequency for reduced noise and EMI, in the range of 100KHz to 250KHz.

The LNK6664E provides PWM (pulse-width-modulation) control of the output voltage and current and is capable of both AC/DC and buck/boost conversion. The switch current is programmable through the DCIN_SET pin, and can be set to as low as 0.165 A or as high as 4.8A, depending on the input voltage. The switching frequency is also programmable, and can be set to as low as 20KHz or as high as 300KHz.

The power monitor pin of the device is connected to a shunt resistor in the circuit, where the voltage across the resistor is measured, and the current through the device is proportional to the voltage across the shunt. This feature allows the current sense features of the part to be disabled, when the application does not require current monitoring. The power monitor pin also has an overflow output, which can be used to detect an overloaded condition and provide a signal to the controller to pause the operation of the part until the overload has been cleared.

Additionally, there is an over-voltage monitor pin, which can be used to monitor and detect an over-voltage condition. The over-voltage monitor pin can be used to limit the output voltage of the device to a safe level, and also can be used to detect a short circuit and to shut down the device when a fault occurs.

The LNK6664E includes a built-in hill climb scheme, which is used to attain a steady state output current. This hill-climbing scheme constantly monitors the output current across the inductor and increases the switching frequency when a steady state current is reached. This scheme also prevents the inductor current from overshooting its steady state value, resulting in improved efficiency.

The LNK6664E also features an enable pin. This pin can be used to enable and disable the switching of the converter. This pin can also be used to enable a second stage controller for interfacing with the power supply. Finally, the enable pin also allows for adjustable on-time control, to allow for changes in output voltage.

The LNK6664E is the perfect device for low power AC/DC applications, and is compatible with a variety of control methods, such as DCIN_SET, OVM_SET, and Enable. The LNK6664E also offers flexible, customizable control, and provides high levels of efficiency. This device is a great choice for powering applications such as LED lighting systems, battery chargers, mobile device power supplies, and more.

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