Datasheet LT3746 (Analog Devices) - 10
| 制造商 | Analog Devices |
| 描述 | 32-Channel 20mA LED Driver with Buck Controller |
| 页数 / 页 | 28 / 10 — Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 609 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. LED Current ILED vs
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文件文字版本
LT3746
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. LED Current ILED vs VISET Pin Voltage vs Temperature Nominal LED Current vs RISET Dot Correction
1.210 20 30 1.208 25 16 20 1.206 12 (V) (mA) (mA) 15 ISET V 1.204 I LED 8 I LED 10 1.202 4 5 1.200 0 0 –50 –25 0 25 50 75 100 125 40 80 120 160 200 240 280 320 4 10 16 22 28 34 40 46 52 58 64 JUNCTION TEMPERATURE (°C) RISET (kΩ) DOT CORRECTION +1 3746 G28 3746 G29 3746 G30
LED Current ILED vs LED Voltage LED Current Variation ILED vs VLED Temperature Short LED Threshold vs VISN
35 23 12 DC = 0×3F 30 22 9 25 21 DC = 0×20 20 (mA) (mA) (V) 20 6 LED I LED 15 I LED V DC = 0×00 19 10 3 18 5 0 17 0 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 0 4 8 12 16 VLED (V) JUNCTION TEMPERATURE (°C) VISN (V) 3746 G31 3746 G32 3746 G33
LED Current Derating vs TSET Current vs ISET Current TSET Threshold vs Temperature Temperature
20 700 35 650 30 16 600 25 12 550 20 (µA) (mV) (mA) I TSET 8 TSET 500 15 V I LED 450 10 4 OT = 0 OT = 1 400 5 0 350 0 0 4 8 12 16 20 –50 –25 0 25 50 75 100 125 80 85 90 95 100 105 110 115 120 IISET (µA) JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 3746 G34 3746 G35 3746 G36 3746fa 10 For more information www.linear.com/3746 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. LED Current ILED vs VISET Pin Voltage vs Temperature Nominal LED Current vs RISET Dot Correction
1.210 20 30 1.208 25 16 20 1.206 12 (V) (mA) (mA) 15 ISET V 1.204 I LED 8 I LED 10 1.202 4 5 1.200 0 0 –50 –25 0 25 50 75 100 125 40 80 120 160 200 240 280 320 4 10 16 22 28 34 40 46 52 58 64 JUNCTION TEMPERATURE (°C) RISET (kΩ) DOT CORRECTION +1 3746 G28 3746 G29 3746 G30
LED Current ILED vs LED Voltage LED Current Variation ILED vs VLED Temperature Short LED Threshold vs VISN
35 23 12 DC = 0×3F 30 22 9 25 21 DC = 0×20 20 (mA) (mA) (V) 20 6 LED I LED 15 I LED V DC = 0×00 19 10 3 18 5 0 17 0 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 0 4 8 12 16 VLED (V) JUNCTION TEMPERATURE (°C) VISN (V) 3746 G31 3746 G32 3746 G33
LED Current Derating vs TSET Current vs ISET Current TSET Threshold vs Temperature Temperature
20 700 35 650 30 16 600 25 12 550 20 (µA) (mV) (mA) I TSET 8 TSET 500 15 V I LED 450 10 4 OT = 0 OT = 1 400 5 0 350 0 0 4 8 12 16 20 –50 –25 0 25 50 75 100 125 80 85 90 95 100 105 110 115 120 IISET (µA) JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 3746 G34 3746 G35 3746 G36 3746fa 10 For more information www.linear.com/3746 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Block Diagram Applications Information Typical Application Related Parts