TLC5922DAPR

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TLC5922DAPR is an LED driver IC designed for mobile applications and features an integrated LED interface controller with two white LED connections. The LED IC offers an adjustable current with a peak LED switch current of up to 2.53A, a maximum output voltage of 20V, and an efficient thermal management system that ensures long-term stable lighting. It is designed for applications such as automotive, consumer electronics, and industrial lighting.

The TLC5922DAPR adopts the most advanced PMIC (Programmable Mixed-signal Integrated Circuit) technology. The PMIC integrates a wide range of analog and digital functions into a single chip, which keeps the PCB layout and design simple. This reduces system power dissipation and cost, which is essential for mobile applications.

The LED driver IC also has an integrated Digital Phase-Locked Loop (DPLL), allowing for synchronization of the output signal with an external signal. In addition, it has an integrated signal amplifier provides adjustable gain, which improves the signal-to-noise ratio. Together with the integrated over-temperature protection and 8-bit adjustable current control features, the TLC5922DAPR is capable of providing a high degree of precision in lighting system control.

The working principle of the TLC5922DAPR is based on the so-called High-Side Pulse Current Control (HSPCC) technology. In HSPCC, the voltage drop across a low bidirectional switch is used to control the current flow through the LED. The switch is closed based on the PWM signal and is opened based on the current sensed during the time the switch is closed. This allows for accurate adjustment of the LED current via the pulse width modulation.

The HSPCC technology is widely used in LED drivers and can offer the advantages of high efficiency and low EMI (Electromagnetic Interference). Moreover, HSPCC technology is well-suited for dimming applications, as it allows for smooth dimming. Additionally, this type of technology also provides protection against physical abuse, because the switch can be opened in the case of an excessive current flow.

In conclusion, the TLC5922DAPR is an ideal LED driver IC for a variety of applications in the automotive, consumer electronics, and industrial lighting markets. With an integrated LED interface controller, a maximum output voltage of 20V, an adjustable current control, and a variety of protection features, the TLC5922DAPR provides an ideal solution for controlling lighting systems.

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