TLD55412QVXUMA1

Summary of Features

• Dual-Channel synchronous Multitopology (B2B, B2G, SEPIC, Buck) DC/DC Controller
• Constant Current and Constant Voltage Regulation
• Individual channel or Multiphase Boost (Multiphase Buck → TLD5501-2QV) operation
• Wide VIN Range (Device 4.5V to 40V, Power Stage 4.5V to 55V)
• Wide LED forward voltage Range (Boost: 2V to 55V; Buck: 2V to 50V)
• LED current accuracy+/-3% at Tj=25° and 5% over the whole automotive temperature range
• Switching Frequency Range from 200 kHz to 700 kHz
• 16bit SPI for diagnostics and control, providing daisy chain capability
• Maximum Efficiency in every condition (up to 96%)
• Limp Home Function (Fail Safe Mode)
• Flexible current sense (Highside or Lowside)
• EMC optimized device: Features an auto Spread Spectrum concept to ensure best in class EMC performance
• Provides output current accuracy calibration for improved system accuracy
• LED current sense with dedicated monitor Output
• 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 to adjust average LED current 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
• Automotive Exterior Lighting: Full LED headlamp assemblies (Low Beam, High Beam, DRL/POS, TURN, …)
• General purpose current/voltage controlled DC/DC LED driver