LT3745-1 Datasheet | Linear Technology

Features 6V to 55V Power Input Voltage Range 16 Independent LED Outputs Up to 75m A/36V ±4% LED Current Matching at 50m A (Typ ±1%) 6-Bit Dot Correction Current Adjustment 12-Bit Grayscale PWM Dimming 0.5µs Minimum LED On-Time Adaptive LED Bus Voltage for High Efficiency Cascadable 30MHz LVDS Serial Data Interface Full Diagnostic and Protection: Individual Open/Short LED and Overtemperature Fault n40-Lead 6mm × 6mm QFN Package n n n n n n n n n LT3745-1 16-Channel 50m A LED Driver with Buck Controller DESCRIPTION The LT®3745-1 integrates a 16-channel LED driver with a 55V buck controller. The LED driver lights up to 75m A/36V of LEDs in series per channel, and the buck controller generates an adaptive bus voltage supplying the parallel LED strings. Each channel has individual 6-bit dot correction current adjustment and 12-bit grayscale PWM dimming. Both dot correction and grayscale are accessible via a serial data interface in LVDS logic. A ±4% LED current matching and a 0.5µs minimum LED on-time can be achieved at 50m A per channel. The LT3745-1 performs full diagnostic and protection against open/short LED and overtemperature fault. The fault status is sent back through the serial data interface. The 30MHz fully-buffered, cascadable LVDS serial data interface makes the chip extremely suitable for large screen LCD dynamic backlighting and mono-, multi-, full-color LED displays. The LT3745 uses a TTL/CMOS serial data interface instead of LVDS. .Data Sheet.co.kr APPLICATIONS Large Screen Display LED Backlighting Mono-, Multi-, Full-Color LED Displays n LED Billboards and Signboards n n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and True Color PWM is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 8058810 TYPICAL APPLICATION 16-Channel LED Driver, 1MHz Buck, 10 LEDs, 25m A to 75m A per Channel, 500Hz 12-Bit...