TLD55411QVXUMA1

Summary of Features

• MOSFET H-Bridge with Single Inductor DC/DC Controller for high power BUCK-BOOST LED control
• Constant Current and Constant Voltage Regulation
• Wide VIN Range (IC 4.5 V to 40 V, Power 4.5 V to 55 V)
• Wide LED forward voltage Range (2V up to 55V)
• Switching Frequency Range from 200 kHz to 700 kHz
• LED current accuracy +/- 3% at TJ = 25°C and 4% over the whole automotive temperature range
• 16-bit SPI for diagnostics and control, providing daisy chain capability
• Maximum Efficiency in every condition (up to 96%)
• Drives multiple loads with a single IC thanks to the Fast Output Discharge operation
• Limp Home Function (Fail Safe Mode)
• EMC optimized device: Auto and programmable Spread Spectrum
• LED and Input current sense with dedicated monitor Outputs
• Adjustable soft start feature to limit the current peak and the voltage overshoot at start-up
• Smart power protection features for device and load (open load, short of Load, Overtemperature)
• Enhanced Dimming features: Analog and PWM dimming
• Available in a small thermally enhanced PG-VQFN-48-31 package
• Automotive AEC qualified

Target Applications

• Especially designed for driving high power LEDs and Laser modules in automotive applications with very high efficiency
• Ideal for driving (LED) loads on supply/battery voltage level
• Full LED headlamp assemblies e.g. LB, HB, DRL/POS with just one DC/DC
• Power supply for high power Matrix and Pixel light sources like LED or Laser modules for DMD or parallel LED arrays
• General purpose current/voltage controlled DC/DC LED driver