Maxim Integrated MAX20092 LED matrix manager

Designers of high-performance automotive matrix lighting and adaptive driving beam light-emitting diode (LED) applications can now migrate to high-current devices with the MAX20092 12-switch matrix manager from Maxim Integrated Products.

The IC is designed to minimise thermal issues associated with LED matrix lighting applications by offering what is claimed to be the industry’s lowest internal switch resistance (R_{DS_ON}), at 65% lower than the closest competitive solution. It provides flexible current management for matrix and pixel lighting. Twelve integrated switches control LEDs in string voltages up to 56 V, saving design time and reducing complexity.

The product manages one to two LEDs per switch, with 12-bit pulse-width modulation (PWM) dimming. It provides built-in logarithmic fade-in/fade-out capability that simplifies LED programmability and reduces taxation on system bus lines. Its integrated MOSFET on resistance (R_{DS_ON}) of 70 mΩ comfortably drives LED currents up to 1.5 A.

The device can parallel up to 27 MAX20092 devices without daisy-chaining to manage large LED pixel count of up to 324 LEDs. It features advanced fault protection and management for open, short and open-trace LED detection, with slew-rate control that reduces EMI and noise. The matrix manager is offered in a small 5 x 5 mm TQFN package.