TLC5917IPWRG4

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PMIC - LED Drivers are a type of electrical circuit for converting a power supply into regulated DC current/voltage. Among these, TLC5917IPWRG4 is an integrated LED driver with linear and pulse-width modulation (PWM) control capability. It is a high-performance LED power supply solution, suitable for LED lighting applications from 7 to 23 W and Imax from 350 to 1000 mA.

TLC5917IPWRG4 features a variety of features, including a configurable external power supply, a single dimming control interface, and two types of dimming operation: continuous linear dimming and PWM dimming that can be switched between 0-10v and PWM de-hazed. It also comes integrated with inductive load protection and short circuit protection capabilities, making it safe and reliable for many different applications.

The applications for the TLC5917IPWRG4 are vast, ranging from large-scale industrial lighting to consumer retail lighting. This device is capable of maintaining precise control configurations in all sorts of environments, meaning it can be used in both consumer and commercial operations. It can be used to create lighting solutions that can easily be adjusted in intensity, allowing for all sorts of different lighting effects. The TLC5917IPWRG4 is especially suitable for applications in the fields of illumination and backlighting, like in digital signage, decorative restaurants, and outdoor lighting.

The working principle of the TLC5917IPWRG4 is quite simple. At its core, the device forms a linear regulator, with a boost converter and a linear feedback control loop. The power supply inputs voltages up to 20V and currents up to 5A, and the output voltage is adjustable from 0V to 16V. This allows the device to customize the output voltage of the LED. The components of the circuit include an inductor and a diode, which help regulate the voltage and current of the output power.

In order to provide precise control, the TLC5917IPWRG4 uses current control, which works by sensing the LED current and adjusting the voltage accordingly. The LED current is detected by the integrated current sense amplifier, and sent to the PWM dimming control circuit. This circuit can then adjust the voltage level and generate the required current for the desired brightness. The dimming control is designed to provide a smooth transition, without any abrupt changes in brightness.

Overall, the TLC5917IPWRG4 is incredibly useful and efficient when it comes to LED lighting applications. By using a linear feedback control loop, it can provide a precise, stable output every time, while allowing for adjustable dimming control. This makes it a much more reliable and cost-effective option than more conventional methods of LED power supply.

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