TLC5926IDWR – TEXAS INSTRUMENTS

The Texas Instruments TLC5926IDWR is a 16-channel, constant-current LED driver featuring a 12-bit current resolution per channel. Operating from a 2.5V to 5.5V supply voltage, it utilizes a serial interface for data input, simplifying system integration. Each channel offers independent current control with a programmable range from 0mA to 120mA, achieved via an internal DAC. The device incorporates a 16-bit shift register for data storage, minimizing external component count. Packaged in a space-saving 20-pin WSON (Wafer-level Chip-Scale Package), it’s ideal for high-density applications._x000D_
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Key advantages include its high current resolution, enabling precise LED brightness control and minimizing visible brightness steps. The integrated constant-current sinks eliminate the need for external current-limiting resistors, reducing component count and PCB space. Common applications include automotive lighting, backlighting for LCD displays, and general-purpose LED matrix control. Its low quiescent current contributes to improved power efficiency, making it suitable for battery-powered devices. However, designers should note the need for an external clock signal to operate the serial interface and the device’s sensitivity to over-current conditions requiring appropriate safety measures.