LNK3204G-TL

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The LNK3204G-TL is a monolithic integrated low-power offline switch designed for high-efficiency, low-power and power-save applications. The device integrates numerous functions including an internal start-up switch and protected circuitry for overvoltage, undervoltage, overload and overtemperature protection.It also features auto-restart and frequency jittering for improved efficiency and noise reduction.The device can be operated from a wide range of AC line voltages from 80VAC to 305VAC and optimizes converters\' efficiency at full load (up to 98%).

Application field

The LNK3204G-TL is suitable for energy-efficient designs that require a reliable, cost-effective and high performance solution with wide operating range and low power consumption in numerous applications including television, monitor and computer peripherals, pump motor controls,lighting, home appliances, and electronic ballasts. It is particularly suitable for applications requiring small size, such as LEDs, industrial control, power tools, and adapters.

Working principle

The LNK3204G-TL is a general-purpose monolithic integrated low-power offline switch suitable for AC/DC converters and offline-switchers applications. It integrates the following features:

• Start-up Switch - The device integrates an internal start-up switch to ensure accurate operation at Start-up

• Fault Reaction - Internal detection of input over/under-voltage, overload and overtemperature conditions will simultaneously trigger the fault reaction

• Auto-restart - The device can be configured to automatically retry once a fault condition is detected and then reset

• Frequency Jittering - This feature allows the device to automatically adjust the switching frequency in steady-state to optimize the converter\'s efficiency and reduce emissions

• Low Standby Power Consumption - The device\'s low power consumption in no-load standby mode allows the user to optimize their design for the lowest possible power consumption

• Compact Packaging - The compact package of the device allows for its use in space-constrained applications where larger packages would not fit.

The LNK3204G-TL also includes a High Voltage Sense (HVS) circuit to allow the user to easily configure the device\'s undervoltage lockout (UVLO) trip level. This feature allows the device to operate with a wide range of AC line voltages, allowing it to be used in a variety of different applications.

In addition, the LNK3204G-TL also includes two protection circuits which can be used to provide over-current and over-temperature protection. The over-current protection circuit triggers a fault when the current exceeds the selected threshold for a certain duration, thus preventing damage to the application. The over-temperature protection circuit triggers a fault when the device\'s temperature exceeds the selected threshold, ensuring the device remains within the required temperature range.

The device features a soft start mode which, when enabled, will gradually increase the power output over a few switching cycles. This reduces the peak inrush or in-rush current, improving the overall system performance. The LNK3204G-TL also includes various options to provide excellent transient response, as well as noise reduction and EMI mitigation.

The LNK3204G-TL is a versatile, cost-effective solution for powering high-efficiency and low-power applications. It provides superior performance, high efficiency, and low power consumption and is suitable for a wide range of applications.

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