TLC59711PWP – TEXAS INSTRUMENTS

The Texas Instruments TLC59711PWP is a 16-bit, current-sinking, constant-current LED driver designed for high-brightness applications. It operates from a 2.7V to 5.5V supply voltage, featuring a 12-bit grayscale resolution per channel for precise LED intensity control. Each of its 16 channels offers individually adjustable current from 0mA to 50mA, with a maximum total sink current of 150mA. The device employs a 16-bit serial interface, compatible with SPI, simplifying integration into microcontroller-based systems. Packaged in a space-saving 20-pin WSON (wettable flank) package, it minimizes board area._x000D_
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The TLC59711PWP’s key advantage lies in its high precision and individual channel control, making it ideal for applications requiring smooth grayscale dimming of multiple LEDs, such as automotive lighting, backlighting systems for displays, and high-resolution LED signage. Its constant-current architecture ensures consistent brightness across a range of operating voltages and LED forward voltages, simplifying design and improving reliability. The integrated PWM functionality eliminates the need for external components, reducing system complexity and cost. The device’s low quiescent current also contributes to improved power efficiency. However, designers should note the need for external current-limiting resistors for LEDs exceeding the device’s maximum current capability.