Datasheet LT3746 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | 32-Channel 20mA LED Driver with Buck Controller |
| Pages / Page | 28 / 7 — Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 609 Kb |
| Document Language | English |
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 100Hz 8:1 GS Dimming. 100Hz 4096:1 GS Dimming
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Text Version of Document
LT3746
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 100Hz 8:1 GS Dimming 100Hz 4096:1 GS Dimming 500Hz 4096:1 GS Dimming
ILED31 ILED31 ILED31 20mA/DIV 20mA/DIV 20mA/DIV VOUT VOUT VOUT 2V/DIV 2V/DIV 2V/DIV VLED31 VLED31 VLED31 2VDIV 2VDIV 2VDIV VPWMCK V VPWMCK 5V/DIV PWMCK 5V/DIV 5V/DIV 5ms/DIV 3746 G01 500ns/DIV 3746 G02 500ns/DIV 3746 G03 CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: DC31 = 0×20, DC31 = 0×20, DC31 = 0×20, GS31 = 0×200 GS31 = 0×001 GS31 = 0×001
200Hz Two-Level DC Dimming 200Hz Four-Level DC Dimming Adaptive LED Bus Voltage I
I I LED31 LED31 V 20mA/DIV 20mA/DIV OUT 0.2V/DIV VOUT VOUT IL 2V/DIV 2V/DIV 0.5A/DIV VLED31 VLED31 2VDIV 2VDIV ILOAD VSCKI VSCKI 0.5A/DIV 5V/DIV (A) (B) (C) (A) (B) (C) 5V/DIV (A) (B) (C) (D) 1ms/DIV 3746 G04 0.5ms/DIV 3746 G05 2ms/DIV 3746 G06 CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: (A) EN = 1, GS31 = 0×FF; (A) EN = 0, GS31 = 0×FFF, DC00-31 = 0×3F, (B) EN = 1, DC31 = 0×3F; (B) EN = 1, DC31 = 0×3F, GS00-31 = 0×FFF (C) EN = 1, DC31 = 0×00 (C) EN = 1, DC31 = 0×00 (D) EN = 1, DC31 = 0×20
Adaptive LED Bus Voltage II Adaptive LED Bus Voltage III Adaptive LED Bus Voltage IV
VOUT VOUT VOUT 0.2V/DIV 0.2V/DIV 0.2V/DIV I I I L L L 0.5A/DIV 0.5A/DIV 0.5A/DIV ILOAD ILOAD ILOAD 0.5A/DIV 0.5A/DIV 0.5A/DIV 2ms/DIV 3746 G07 2ms/DIV 3746 G08 2ms/DIV 3746 G09 CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: DC00-31 = 0×20, DC00-31 = 0×3F, GS00-03 = 0×1FF, GS04-07 = 0×3FF, DC00-07 = 0×3F, GS00-07 = 0×3FF, DC08-15 = 0×2F, GS00-31 = 0×800 GS08-11 = 0×5FF, GS12-15 = 0×7FF, GS16-19 = 0×9FF, GS08-15 = 0×7FF, DC16-23 = 0×1F, DC16-23 = 0×BFF, GS20-23 = 0×BFF, GS24-27 = 0×DFF, GS28-31 = 0×FFF DC24-31 = 0×0F, GS24-31 = 0×FFF 3746fa For more information www.linear.com/3746 7 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Block Diagram Applications Information Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 100Hz 8:1 GS Dimming 100Hz 4096:1 GS Dimming 500Hz 4096:1 GS Dimming
ILED31 ILED31 ILED31 20mA/DIV 20mA/DIV 20mA/DIV VOUT VOUT VOUT 2V/DIV 2V/DIV 2V/DIV VLED31 VLED31 VLED31 2VDIV 2VDIV 2VDIV VPWMCK V VPWMCK 5V/DIV PWMCK 5V/DIV 5V/DIV 5ms/DIV 3746 G01 500ns/DIV 3746 G02 500ns/DIV 3746 G03 CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: DC31 = 0×20, DC31 = 0×20, DC31 = 0×20, GS31 = 0×200 GS31 = 0×001 GS31 = 0×001
200Hz Two-Level DC Dimming 200Hz Four-Level DC Dimming Adaptive LED Bus Voltage I
I I LED31 LED31 V 20mA/DIV 20mA/DIV OUT 0.2V/DIV VOUT VOUT IL 2V/DIV 2V/DIV 0.5A/DIV VLED31 VLED31 2VDIV 2VDIV ILOAD VSCKI VSCKI 0.5A/DIV 5V/DIV (A) (B) (C) (A) (B) (C) 5V/DIV (A) (B) (C) (D) 1ms/DIV 3746 G04 0.5ms/DIV 3746 G05 2ms/DIV 3746 G06 CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: (A) EN = 1, GS31 = 0×FF; (A) EN = 0, GS31 = 0×FFF, DC00-31 = 0×3F, (B) EN = 1, DC31 = 0×3F; (B) EN = 1, DC31 = 0×3F, GS00-31 = 0×FFF (C) EN = 1, DC31 = 0×00 (C) EN = 1, DC31 = 0×00 (D) EN = 1, DC31 = 0×20
Adaptive LED Bus Voltage II Adaptive LED Bus Voltage III Adaptive LED Bus Voltage IV
VOUT VOUT VOUT 0.2V/DIV 0.2V/DIV 0.2V/DIV I I I L L L 0.5A/DIV 0.5A/DIV 0.5A/DIV ILOAD ILOAD ILOAD 0.5A/DIV 0.5A/DIV 0.5A/DIV 2ms/DIV 3746 G07 2ms/DIV 3746 G08 2ms/DIV 3746 G09 CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: CIRCUIT OF FIGURE 7: DC00-31 = 0×20, DC00-31 = 0×3F, GS00-03 = 0×1FF, GS04-07 = 0×3FF, DC00-07 = 0×3F, GS00-07 = 0×3FF, DC08-15 = 0×2F, GS00-31 = 0×800 GS08-11 = 0×5FF, GS12-15 = 0×7FF, GS16-19 = 0×9FF, GS08-15 = 0×7FF, DC16-23 = 0×1F, DC16-23 = 0×BFF, GS20-23 = 0×BFF, GS24-27 = 0×DFF, GS28-31 = 0×FFF DC24-31 = 0×0F, GS24-31 = 0×FFF 3746fa For more information www.linear.com/3746 7 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Block Diagram Applications Information Typical Application Related Parts
