STP16CPC05 LED Sink Driver The STMicroelectronics STP16CPC05 LED sink driver for LED panel displays guarantees a 20V output driving capability that allows users to connect more LEDs in series. The STP16CPC05 features a high clock frequency of 30 MHz, making it suitable for high data-rate transmission. This STMicroelectronics LED driver provides a 3.3V voltage supply that is useful in applications that interface with a 3.3V microcontroller.