Datasheet LT3745-1 (Analog Devices) - 7

LT3745-1
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. 100Hz 8:1 GS Dimming 100Hz 4096:1 GS Dimming 500Hz 4096:1 GS Dimming
ILED15 ILED15 ILED15 50mA/DIV 50mA/DIV 50mA/DIV VOUT VOUT VOUT 2V/DIV 2V/DIV 2V/DIV VLED15 VLED15 V 2V/DIV LED15 2V/DIV 2V/DIV VPWMCK VPWMCK VPWMCK 0.5V/DIV 0.5V/DIV 0.5V/DIV 5ms/DIV 37451 G01 500ns/DIV 37451 G02 500ns/DIV 37451 G03 CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: DC15 = 0×20 DC15 = 0×20 DC15 = 0×20 GS15 = 0×200 GS15 = 0×001 GS15 = 0×001
200Hz 2-Level DC Dimming 200Hz 4-Level DC Dimming Adaptive LED Bus Voltage I
I V LED15 I OUT LED15 50mA/DIV 50mA/DIV 0.5V/DIV V V OUT OUT 2V/DIV 2V/DIV IL V 0.5A/DIV V LED15 LED15 2V/DIV 2V/DIV VSCKI VSCKI 0.5V/DIV 0.5V/DIV (a) (b) (c) (a) (b) (c) (a) (b) (c) (d) 1ms/DIV 37451 G04 0.5ms/DIV 37451 G05 2ms/DIV 37451 G06 CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: (a) EN = 1, GS15 = 0×FFF (c) EN = 1, DC15 = 0×00 (a) EN = 0, GS15 = 0×FFF (c) EN = 1, DC15 = 0×00 DC00-15 = 0×3F, GS00-15 = 0×FFF (b) EN = 1, DC15 = 0×3F (b) EN = 1, DC15 = 0×3F (d) EN = 1, DC15 = 0×20
Adaptive LED Bus Voltage II Adaptive LED Bus Voltage III Adaptive LED Bus Voltage IV
V V V OUT OUT OUT 0.5V/DIV 0.5V/DIV 0.5V/DIV IL 0.5A/DIV I I L L 0.5A/DIV 0.5A/DIV 2ms/DIV 37451 G07 2ms/DIV 37451 G08 2ms/DIV 37451 G09 CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: DC00-15 = 0×20, GS00-15 = 0×800 DC00-15 = 0×3F, GS00-01 = 0×1FF, GS02-03 = 0×3FF, DC00-03 = 0×3F, GS00-03 = 0×3FF, DC04-07 = 0×2F, GS04-05 = 0×5FF, GS06-07 = 0×7FF, GS08-09 = 0×9FF, GS04-07 = 0×7FF, DC08-11 = 0×1F, GS08-11 = 0×BFF, GS10-11 = 0×BFF, GS12-13 = 0×DFF, GS14-15 = 0×FFF DC12-15 = 0×0F, GS12-15 = 0×FFF 37451f 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Timing Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Package Description Typical Application Related Parts