LNK562GN-TL

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Power Management integrated circuits (PMICs) are essential in various applications ranging from consumer electronics, computers, and communications to industrial, healthcare, and automotive industries. They are designed to efficiently manage the process of converting energy into different operating modes and conserve the energy consumed. PMICs are usually classified according to their power sources, output type, topology and package types.

The LNK562GN-TL is an example of a PMIC device from Power Integrations that belongs on the AC DC Converters, Offline Switchers family. It is an integrated offline converter that has an integrated high-voltage switch and requires a minimal number of external components for operation. It is suitable for the price-sensitive applications found in consumer, white good and industrial electronic equipment.

The LNK562GN-TL is based on a flyback topology and uses a few external components such as a transformer, rectifiers and input and output capacitors. It offers a wide input range up to 265VAC, and delivers a fixed output of 5V/1A or 6V/0.5A. The device features a wide 100–400kHz switching frequency, with many integrated protection features to enhance its functional safety.

The integrated MOSFET of the LNK562GN-TL is usually capable of handling up to 4W, hence the entire application is limited to 4W to ensure safe operation while supplying the desired output load. During normal operation, the integrated MOSFET switches from the active on-state to the standby off-state in less than 10μs and is also protected from over-current and short-circuit conditions. To control the MOSFET turn-on, a current sensing pin is provided to act as feedback control for the power stage.

In the active state of operation, the IC senses the input voltage, rectifies it and stores the energy in an inductor. This energy is then transferred to the output capacitors to provide a smooth DC output. To reduce EMI concerns, the device has an integrated active clamping topology, which works as an EMI filter. The device can also be configured to run at lower power, thereby advancing the start-up current while providing excellent load regulation over the entire load range.

To ensure device safety, the LNK562GN-TL is also equipped with a variety of integrated over-voltage protection features such as over-temperature, over-load and over-current protection. The device is also integrated with brown-in and brown-out protection and inrush current limiting.

The LNK562GN-TL is designed to meet the requirements of a variety of applications from consumer products such as TVs, remote control toys, power adapter/chargers and white goods, to industrial equipment, telecommunication and healthcare. The device is particularly ideal for applications with tight space constraints and is ideal for cost-sensitive designs.

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