The IS32LT3151C-ZLA3-TR from Lumissil Microsystems is an Automotive-Grade Single-Channel Linear LED Driver IC with programmable constant current capability. It requires an input voltage of 4.5–40 V and can source up to 450 mA with ±5% current accuracy across the full automotive temperature range. This AEC-Q100-qualified LED driver supports both PWM dimming and analog dimming via the ICTRL pin, which can be configured with an external resistor, an NTC thermistor for LED thermal roll-off, or a binning resistor for brightness calibration. It features a low dropout voltage of 700 mV at 300 mA per channel, ensuring efficient operation in 12 V automotive systems.

The IS32LT3151C-ZLA3-TR integrates comprehensive fault protection, including LED string open/short detection, single-LED short detection, external UVLO setting, current reference set resistor open/short, and thermal shutdown. This RoHS-compliant LED driver has a typical shutdown supply current of 10 µA and an operating junction temperature range of -40°C to +125°C. It is available in a surface-mount package that measures 6.4 x 5.1 x 1.2 mm and is ideal for automotive rear lights, stop/taillights, position lights, daytime running lights, turn signals, and interior lighting applications.