ALED8102S 8-Channel LED Driver

STMicroelectronics' ALED8102S is a monolithic, low-voltage LED driver with eight low-side channels. The ALED8102S guarantees up to 20 V output driving capability allowing users to connect several LEDs in series. In the output stage, eight regulated current sources provide from 5 mA to 100 mA constant current to drive the LEDs. Current is programmed through a single external resistor. The ALED8102S is equipped with thermal management that protects the device forcing it to shutdown (typically: power-off at +170°C with +15°C hysteresis to restart). The thermal protection switches only the output channels OFF. The operative supply voltage range is between 3 V and 5.5 V. The output control is provided by four switch inputs, proving an on/off toggle action that is also suitable for local dimming. Moreover, on all active output LEDs, brightness can be adjusted with a global PWM signal applied to the output enable pin (OE). Outputs can be connected in parallel or left unconnected if not used, as the application requires.