LT3966 2 I C Programmable Quad Monolithic Boost LED Driver FEATURES DESCRIPTION 2 n Four Independent DC/DC Channels The LT 3966 is an I C programmable monolithic boost 2 n I C Programmable LED driver with four independent channels. Each chan- n 8192:1 True Color PWM Dimming nel provides a 60V current mode boost converter with n 8-Bit Analog Dimming Pin Scaled by DAC an internal 1.6A DMOS power switch, as well as inter- 2 n 11-Channel, 8-Bit ADC with 2 External Inputs nal and external analog and PWM dimming features. I C n 1.6A, 60V Internal DMOS Switches programmable features include a 13-bit (8192:1) digital n Input Voltage: 3V to 60V PWM generator, 8-bit analog dimming DAC, and flexible n Output Voltage and Current Monitoring to 60V fault reporting and handling. n High Side PMOS Disconnect and PWM Switch Driver An onboard 8-bit ADC allows measurement of each n Adjustable Frequency: 300kHz to 4MHz with Optional channels output voltage and output current, as well Frequency Synchronization as chip input voltage and twoexternal measurements. n Thermally Enhanced 6mm 6mm 40-Lead QFNPackage In addition, independent shutdown and standby con- n AEC-Q100 Qualification in Progress trol of each channel provides flexiblesolutions for multitopologyapplications. APPLICATIONS The LT3966 is available in a thermally enhanced 6mm n Backlighting 6mm 40-Lead QFN package. n Heads Up Displays All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION 2 100W Buck Mode LED Driver with I C Dimming V IN 44V TO 52V ISP1 ISP2 ISP3 ISP4 4.7F Efficiency 330m 330m 330m 330m 4 100 ISN1 ISN2 ISN3 ISN4 TG1 TG2 TG3 TG4 95 90 1F 1F 1F 1F 85 68H 68H 68H 68H 80 f = 360kHz SW 75 SW1 SW2 SW3 SW4 V IN V = 48V IN 1M V = 34V OUT ISP14 70 EN/UVLO 0.0 0.5 1.0 1.5 2.0 2.5 3.0 ISN14 33k LT3966 LED CURRENT (A) GND TG14 3966 TA01b (4 750mA/4 CH) EXT1 FB14 CTRL/ EXT2 PWM14 SDA SCL ALERT RT SYNC ADR12 INTV CC 3966 TA01a 97.6k 150k 2 360kHz I C MULTI- 4.7F BUS 22.1k INTV CC PHASE Rev. 0 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LT3966 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW V , EN/UVLO, SW1, SW2, SW3, SW4, ISP1, ISP2, IN ISP3, ISP4, ISN1, ISN2, ISN3, ISN4 ......................62V ISPISN (Any Channel) ...............................................2V 40 39 38 37 36 35 34 33 32 31 TG14 ................................................................ (Note 2) ISP1 1 30 ISP2 INTV ............................................................... (Note 3) CC TG1 2 29 TG2 FB14, EXT12, CTRL/PWM14, ADR12, ALERT, SW1 3 28 SW2 SDA, SCL, SYNC ..................................................5.5V SW1 4 27 SW2 RT ...............................................................................2V SW3 SW4 5 26 41 GND Operating Junction Temperature Range (Notes 4, 5) SW3 6 25 SW4 TG3 7 24 TG4 LT3966E ............................................ 40C to 125C ISP3 8 23 ISP4 LT3966J............................................. 40C to 150C ISN3 9 22 ISN4 Storage Temperature Range .................. 65C to 150C FB3 10 21 FB4 11 12 13 14 15 16 17 18 19 20 QFN PACKAGE 40-LEAD (6mm 6mm) PLASTIC QFN T = 150C, = 33C/W EXPOSED PAD (PIN 41) IS GND JMAX JA AND MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT3966EUJ PBF LT3966EUJ TRPBF LT3966UJ 40-Lead (6mm 6mm) Plastic QFN 40C to 125C LT3966JUJ PBF LT3966JUJ TRPBF LT3966UJ 40-Lead (6mm 6mm) Plastic QFN 40C to 150C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. ELECTRICAL CHARACTERISTICS The l denotes specifications that apply over the full operating temperature range, otherwise specifications are at T = 25C. V = 12V unless otherwise noted. A IN PARAMETER CONDITIONS MIN TYP MAX UNITS l V Operating Range 3 60 V IN V Quiescent Current CTRL/PWM = 0V, EN/UVLO = 1.3V 2.7 3.3 mA IN V Shutdown Current EN/UVLO = 0V 0 1 A IN EN/UVLO = 1.15V, CTRL/PWM = 0V 190 230 A EN/UVLO Shutdown Threshold Falling l 1.20 1.23 1.26 V EN/UVLO Rising Hysteresis EN/UVLO Rising 15 mV EN/UVLO Input Low Voltage I < 1A 0.4 V VIN Rev. 0 2 For more information www.analog.com CTRL/PWM1 ISN1 CTRL/PWM2 FB1 CTRL/PWM3 V IN CTRL/PWM4 INTV CC EXT1 EN/UVLO ADR1 EXT2 ADR2 SYNC SDA RT SCL FB2 ALERT ISN2