TLC5920DLG4

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TLC5920DLG4 is a high efficiency and low power consumption LED driver developed by Texas Instruments. It is a member of the Texas Instruments\' DL family of products that contain all the necessary components for controlling LEDs, such as current limiting and shutting off the current when an over-current is detected, ensuring that the LEDs are not damaged. The TLC5920DLG4 is a switch-mode step-down LED controller with an integrated PWM controller, current sensing, and programmable dimming control. The chip is available in two package options: the Dual Inline Package (DIP) and the Narrow Body Quad Flat Package (QFN). The device is designed for low power LED applications requiring efficiency and small size. With the integrated DC-DC converter, the TLC5920DLG4 is capable of driving LEDs at up to 20V and up to 3 Amps. It is programmable for constant current or constant voltage operation and also contains an external digital dimmer/blender interface. This allows it to be easily integrated into an application requiring digital dimming control.

The TLC5920DLG4 is targeted for applications such as automotive and industrial lighting, portable devices, LCD backlighting, street lighting and signage, gaming, stage lighting and DLP projectors, and flat panel displays. The device is a complete constant current, synchronous DC-DC converter driver offering features such as voltage and current control, over-voltage protection, and over-temperature protection. The device is designed to provide excellent power efficiency, while maintaining a constant current output even in low power applications. This results in high accuracy and reliability, while providing a small and cost-effective solution.

The TLC5920DLG4 works by using a PWM technique to adjust the brightness of LEDs. The PWM technique works by rapidly switching the current that powers the LEDs on and off. The current is adjusted by the duty cycle of the PWM signal. The duty cycle is controlled by a digital control signal from a microcontroller. The PWM signal can also be used to dim or adjust the brightness of the LEDs. This allows the LEDs to be dimmed or adjusted to achieve the desired brightness level.

The TLC5920DLG4 includes various protection features to prevent damage to the LEDs. It contains a short-circuit protection feature which detects when the LED current is too high and shuts the converter off. It also contains an over-voltage protection feature which shuts off the current if the voltage of the LED exceeds a certain level. Additionally, the device has an over-temperature protection feature which shuts off the device to prevent damage if the operating temperature exceeds a certain level.

In conclusion, the TLC5920DLG4 is a high efficiency and low power consumption LED driver. It is designed for low power LED applications and can drive LEDs up to 20 volts and 3 amps. The device is programmable for constant current or voltage operation and also contains an external digital dimmer/blender interface. It provides quality power efficiency with a constant current output even in low power applications and contains various protection features to ensure maximum reliability and performance. The TLC5920DLG4 is ideal for a wide range of applications, making it an ideal choice for virtually any LED lighting application.

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