MAX20090 Series LED Controllers

Analog Devices' MAX20090 is a single channel, high-brightness LED (HB LED) driver available over the -40°C to +125°C automotive temperature range. It can take an input voltage from 5 V to 65 V and drive a string of LEDs with a maximum output voltage of 65 V. The driver senses output current at the high side of the LED string. High-side current sensing is required to protect shorts between the output and the ground or battery input. The PWM input provides LED dimming ratios of up to 1000:1, and the ICTRL input provides additional analog dimming capability in the controller. This device also includes a fault flag (active-low FLT) that indicates open string, shorted string, and thermal shutdown. The device has built-in spread-spectrum modulation for improved electromagnetic-compatibility performance.