The LT3756 is a high side current sense DC/DC controller designed to drive high current LEDs. LTC3756 operates with input voltages up to 100V and can deliver outputs up to 100V. The LT3756 is targeted for applications such as automotive headlights to higher input voltage applications such as fixed 48V driving high power spot lights. This device is a high-side current sense DC/DC controller designed to drive high current LEDs from an input voltage range of 6V to 100V. This makes it ideal for a wide variety of applications including automotive, industrial and architectural lighting. The LT3756 drives an external N-channel MOSFET and can drive up to 14 x 1A white LEDs from a nominal 12V input, delivering in excess of 50W. Since it incorporates a high-side current sense, it can be used in boost, buck, buck-boost or SEPIC and flyback topologies. The LT3756 can deliver efficiencies of over 94% in boost mode, eliminating any need for external heat sinking. A frequency adjust pin permits the user to program the frequency between 100kHz and 1MHz, optimizing efficiency while minimizing external component size and cost. Combined with either a 3mm x 3mm QFN or thermally enhanced MSOP-16E package, the LT3756 offers a very compact high power LED driver solution. The LT3756 uses True Color PWM™ dimming, which offers constant LED color with dimming ranges of up to 3,000:1. For less demanding dimming requirements, the CTRL pin can be used to offer a 10:1 analog dimming range. Its fixed frequency, current mode architecture offers stable operation over a wide range of supply and output voltages. A ground referenced voltage FB pin serves as the input for several LED protection features, making it possible for the converter to operate as a constant-voltage source.