Datasheet LT3795 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 110V LED Controller with Spread Spectrum Frequency Modulation |
| 页数 / 页 | 30 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 848 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, unless otherwise noted. ISP/ISN Overcurrent Protection
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LT3795
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. ISP/ISN Overcurrent Protection ISP/ISN Input Bias Current Threshold vs Temperature vs VISP, VISN VREF Voltage vs Temperature
380 900 2.05 800 2.04 I 378 ISP 700 REF = 0µA 2.03 600 2.02 376 500 2.01 (V) 400 2.00 V REF IREF = –100µA 374 300 1.99 372 ISP, ISN BIAS CURRENT (µA) 200 1.98 100 1.97 ISP/ISN OVERCURRENT THRESHOLD (mV) ISN 370 0 1.96 –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 120 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VISP, VISN (V) TEMPERATURE (°C) 3795 G06 3795 G07 3795 G08
Switching Frequency VREF vs VIN RT vs Switching Frequency (kHz) vs Temperature
2.05 100 440 RT = 19.6k 2.04 430 2.03 420 2.02 410 (V) 2.01 (kΩ) 10 400 V REF R T 2.00 390 1.99 380 SWITCHING FREQUENCY (kHz) 1.98 370 1.97 1 360 0 20 40 60 80 100 120 0 100 200 300 400 500 600 700 800 900 1000 –50 –25 0 25 50 75 100 125 150 VIN (V) SWITCHING FREQUENCY TEMPERATURE (kHz) (°C) 3795 G09 3795 G10 3795 G11
Switching Frequency vs SS Voltage Quiescent Current vs VIN VISMON vs V(ISP-ISN)
450 3.0 2000 RT = 19.6k 400 1800 2.5 1600 350 1400 300 2.0 1200 250 (mV) 1.5 1000 200 CURRENT (mA) V ISMON 800 150 1.0 V IN 600 100 SWITCHING FREQUENCY (kHz) 400 0.5 50 200 0 0 0 0 200 400 600 800 1000 1200 0 20 40 60 80 100 120 0 100 200 300 400 500 SS VOLTAGE (mV) VIN (V) V(ISP-ISN) (mV) 3795 G11a 3795 G12 3795 G13 3795fc 6 For more information www.linear.com/LT3795 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. ISP/ISN Overcurrent Protection ISP/ISN Input Bias Current Threshold vs Temperature vs VISP, VISN VREF Voltage vs Temperature
380 900 2.05 800 2.04 I 378 ISP 700 REF = 0µA 2.03 600 2.02 376 500 2.01 (V) 400 2.00 V REF IREF = –100µA 374 300 1.99 372 ISP, ISN BIAS CURRENT (µA) 200 1.98 100 1.97 ISP/ISN OVERCURRENT THRESHOLD (mV) ISN 370 0 1.96 –50 –25 0 25 50 75 100 125 150 0 20 40 60 80 100 120 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) VISP, VISN (V) TEMPERATURE (°C) 3795 G06 3795 G07 3795 G08
Switching Frequency VREF vs VIN RT vs Switching Frequency (kHz) vs Temperature
2.05 100 440 RT = 19.6k 2.04 430 2.03 420 2.02 410 (V) 2.01 (kΩ) 10 400 V REF R T 2.00 390 1.99 380 SWITCHING FREQUENCY (kHz) 1.98 370 1.97 1 360 0 20 40 60 80 100 120 0 100 200 300 400 500 600 700 800 900 1000 –50 –25 0 25 50 75 100 125 150 VIN (V) SWITCHING FREQUENCY TEMPERATURE (kHz) (°C) 3795 G09 3795 G10 3795 G11
Switching Frequency vs SS Voltage Quiescent Current vs VIN VISMON vs V(ISP-ISN)
450 3.0 2000 RT = 19.6k 400 1800 2.5 1600 350 1400 300 2.0 1200 250 (mV) 1.5 1000 200 CURRENT (mA) V ISMON 800 150 1.0 V IN 600 100 SWITCHING FREQUENCY (kHz) 400 0.5 50 200 0 0 0 0 200 400 600 800 1000 1200 0 20 40 60 80 100 120 0 100 200 300 400 500 SS VOLTAGE (mV) VIN (V) V(ISP-ISN) (mV) 3795 G11a 3795 G12 3795 G13 3795fc 6 For more information www.linear.com/LT3795 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts