LED driver for automotive backlighting applications

Texas Instruments LP886xC-Q1 Automotive LED Driver is a low-EMI, simple-to-use LED driver with DC-DC converter. The converter aids both boost and SEPIC mode operation. The device provides four or three high-precision current sinks that can be connected for higher current capability. The converter also has adaptive output voltage control based on the LED forward voltages. This option reduces the power consumption by altering the voltage to the lowest sufficient level in all conditions. For EMI reduction DC-DC maintains a spread spectrum for switching frequency and an external synchronisation with a dedicated pin. A wide-range adjustable frequency enables the device to evade disturbance for the sensitive frequency band.

The input voltage range for the driver is from 4.5V to 40V to support an automotive stop, start and load dump condition. The device also integrates extensive fault detection features.

Typical applications for the device include backlighting for automotive infotainment, automotive instrument clusters, smart mirrors, and heads-up displays.