This concept of a synchronous and seamless buck-boost regulation provides a very efficient solution for circuits where the output (load) voltage is on the same level as the input voltage, e.g. in short chains with 2 to 3 high power LEDs or laser diodes connected to a 12 V electrical system.

Thanks to the flexibility to be used in current and in voltage mode it is also a perfect device for powering non LED applications like USB and mobile wireless charger or as multipurpose pre-regulation like for infotainment.

As it comes without SPI it is also ideal for all application where a basic feature set is sufficient or where a Microcontroller is not used.

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 (Device 4.5V to 40V, Power Stage 4.5V to 55V)

Wide LED forward voltage Range (2V up to 55V)

LED current accuracy+/-3% at Tj=25° and 4% over the whole automotive temperature range

Switching Frequency Range from 200 kHz to 700 kHz

Maximum Efficiency in every condition (up to 96%)

Flexible current sense (Highside or Lowside)

EMC optimized device: Features an auto Spread Spectrum concept to ensure best in class EMC performance

Open Load, Overvoltages, Shorted LED fault and Overtemperature Diagnostic Outputs

LED and Input current sense with dedicated monitor Outputs

Smart power protection features for device and load (open load, short of Load, Overtemperature)

Capability to supply Gate Drivers via external Voltage Regulator

Adjustable Soft Start

Enhanced Dimming features to adjust average LED current and PWM dimming

Available in a small thermally enhanced VQFN-48-31 package

Automotive AEC Qualified