TLC5923DAPG4

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LED technology is becoming increasingly popular due to its energy efficiency, durability and coverage. As LEDs continue to replace other lighting sources, manufacturers have realized the need for dedicated LED-driving devices that a wide range of operating conditions. The Texas Instruments (TI) TLC5923DAPG4 is an example of a dedicated LED driving device. It is categorized as a PMIC – LED driver and is capable of driving power LEDs as well as low-voltage RGB LEDs.

The TLC5923DAPG4 is used to convert a low-voltage input to the high-voltage current required to drive LEDs. It is designed for working conditions of up to 48V with a maximum output current of 1 A. It also integrates protection diodes to prevent accidental reverse-mounting and overcurrent protection. The device boasts a wide range of adjustable features such as dimming and mains-carried brightness control. It also offers good EMC performance, achieving an EN55022 Class A when properly configured.

The TLC5923DAPG4 is capable of driving up to 4 strings of LEDs, each string with up to 20 LEDs. It features dual PWM dimming control and programmable fading rate which enables dimming of RGB LEDs up to 256 steps. It can also be operated in open-loop, closed-loop and constant voltage modes. Furthermore, it features built-in protection features such as thermal shutdown, current limit and under-voltage lockout to protect the device and system from unexpected events.

The TLC5923DAPG4\'s working principle is based on inductive boost architecture. In this architecture, an inductor is used to boost the input voltage to a level suitable for the LED drive. The inductor is switched by an internal high-frequency oscillator in conjunction with an external sense resistor to limit the LED\'s current in the constant current mode. The device can be programmed via three pins, SCL, SDA and SEL pins. With this feature, it can be configured according to different lighting applications.

In conclusion, the TLC5923DAPG4 PMIC – LED driver is a versatile device with numerous adjustable features and built-in protection mechanisms. It is suitable for driving power LEDs as well as low-voltage RGB LEDs, making it suitable for various LED lighting applications. It features inductive boost architecture and can be programmed to suit different LED driving applications, making it an ideal choice for LED lighting applications.

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