TLC59025 LED Sink Drivers Texas Instruments TLC59025 Low-Power LED Sink Driver features 16 constant-current output channels and constant output current invariant to load voltage change. The TI TLC59025 is designed for LED displays and LED lighting applications and contains a 16-bit shift register and data latches that convert serial input data into the parallel output format. This Texas Instruments LED sink driver provides uniform and constant current for driving LEDs within a wide range of VF variations and provides great flexibility and device performance. The TLC59025 has an adjustable constant output current range of 3mA to 45mA.