LT3595 Datasheet | Linear Technology

.. LT3595 16 Channel Buck Mode LED Driver DESCRIPTION The LT®3595 is a high performance LED Driver designed to drive sixteen independent channels of up to 10 LEDs at currents up to 50m A. Series connection of the LEDs provides identical LED currents resulting in uniform brightness. Power switches, Schottky diodes, and pensation ponents are all internal, providing a small converter footprint and lower ponent cost. The high 2MHz switching frequency permits the use of tiny, low profile inductors and capacitors. A fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltage. A single external resistor sets the LED current for all sixteen channels, and dimming is then controlled for each channel by pulse width modulating the individual PWM pins. Relative current matching among the sixteen drivers is 8% and the PWM dimming range is 5000:1. The part is available in a 5mm × 9mm × 0.75mm 56-pin QFN package. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. True Color PWM is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Features - - - - - - - - - - - - - - 4.5V to 45V Input Supply Range Up to 50m A LED Current per Channel 100m A, 45V Internal Switches 8% Relative LED Current Match at 20m A 16 Independent LED Channels 5000:1 True Color PWMTM Dimming Range LEDs Disconnected in Shutdown Internal Schottky Diodes Low Quiescent Current 2MHz Switching Frequency RSET Pin Sets Master LED Current Typical Efficiency: 92% Open LED Detection and Thermal Protection 56-Pin 5mm × 9mm × 0.75mm QFN Package APPLICATIONS - - - LED Video Billboards LCD Televisions Stadium and Advertising Displays TYPICAL APPLICATION 16-Channel LED Driver (Three LEDs per Channel), 20m A Current VIN 15V TO 45V 10μF 0.47μF 0.47μF 0.47μF 0.47μF 0.47μF 0.47μF 0.47μF 0.47μF VPWM 5V/DIV 5000:1 PWM Dimming at 100Hz 100μH 100μH 100μH 100μH 100μ...