I2C-Programmable Multi-Channel LED Driver with Integrated Boost Converter

• AEC-Q100 qualified
• Wide input voltage range of 4.5 to 36 V
• Operates down to 3.9 V (V_IN falling) for idle stop, and up to 40 V for load dump
• Integrated boost converter with DMOS switch and OVP protection up to 39 V
• 8 fully integrated LED current sinks, with individually programmable current up to 60 mA per channel
• I²C™ interface for programming LED current, PWM dimming, and various protection thresholds per channel
• Ability to drive multiple loads from a single IC
• Extensive PWM dimming (up to 10,000:1 at 100 Hz), individually programmable for each channel
• Extensive diagnostics and fault reporting
• Thermal warning and derating of LED current at higher temperatures
• Buffered PWM dimming control for all channels to facilitate localized dimming applications
• Polyphase PWM dimming: LED currents staggered to reduce light flickering and input ripple current
• Synchronize boost switching frequency: 400 kHz to 2.3 MHz to allow operation below or above the AM band
• Programmable frequency dithering to reduce EMI
• Typical LED current accuracy of 0.7%, and LED-to-LED matching accuracy of 0.8%
• Protection Features
  • Open/shorted LED pin detection
  • Programmable LED string short detection
  • Open/shorted external components (including boost inductor, Schottky diode, FSET resistor and so forth)
  • Input overcurrent protection against output to GND short
  • Cycle-by-cycle switch current limit
  • Overtemperature, and output overvoltage and undervoltage protection

Typical Applications

• Infotainment
• Cluster
• Center-Stack Lighting
• Head-Up Display (HUD)
• Daytime Running Lights (DRL)