TLC5940QPWPREP

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TLC5940QPWPREP is a 16 channel, constant-current sink LED driver that employs an external MOSFET for PWM dimming control and a precision reference. It is classified under PMIC - LED Drivers.

The TLC5940QPWPREP provides cost effective, compact and low profile solutions for driving high-brightness LEDs (HB-LEDs). It incorporates a proprietary constant current protection system to prevent device failure caused by overvoltage and overcurrent. The device also has a 10-bit resolution programmable linear dimming control and is ideal for adjusting the overall brightness of multiple LEDs with a single external resistor. The integrated 16 channels, constant-current MOSFET drivers provide low thermal and output resistance.

The TLC5940QPWPREP application field mainly includes automotive lighting, traffic lighting, signage and general lighting. With simple and flexible programming features, the device can be deployed in many applications such as LCD TV backlighting, camera flash lighting, LED lighting control, etc.

The working principle behind the TLC5940QPWPREP is quite simple and straightforward. When an LED is connected to the device, a constant-current source is supplied to it through an external MOSFET switch. This switch is controlled by the integrated pulse width modulation (PWM) generator which is fed into a precision reference such as a resistor or digital-to-analog converter (DAC). By varying the voltage or current of the reference, the duty cycle of the PWM signal can be adjusted, thus changing the brightness of the LED.

The TLC5940QPWPREP is also equipped with fault detection and monitoring capabilities that further strengthen its reliability. In addition, its small footprint and ease of setup make it suitable for deployments in confined spaces, thus making it ideal for automotive, industrial and consumer applications.

In summary, the TLC5940QPWPREP is a powerful and highly reliable 16 channel constant-current sink LED driver. With its high-level of integration, small form factor and simple programming features, the device is a cost effective solution for driving high-brightness LEDs. It can be used in a variety of applications such as LCD TV backlighting, LED lighting control and camera flash lighting.

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