Datasheet LT3518 (Analog Devices) - 5
| Fabricante | Analog Devices |
| Descripción | Full-Featured LED Driver with 2.3A Switch Current |
| Páginas / Página | 20 / 5 — typical perForMance characteristics. Switch Current Limit. VISP – VISN … |
| Formato / tamaño de archivo | PDF / 465 Kb |
| Idioma del documento | Inglés |
typical perForMance characteristics. Switch Current Limit. VISP – VISN Threshold vs VCTRL. vs Duty Cycle
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LT3518
typical perForMance characteristics Switch Current Limit VISP – VISN Threshold vs VCTRL vs Duty Cycle Oscillator Frequency vs RT
120 3.0 10000 VIN = 5V TA = 25°C VISP = 24V 100 VC = 1V 2.5 TA = 25°C 80 2.0 60 1.5 1000 THRESHOLD (mV) ISN 40 1.0 – V CURRENT LIMIT (A) V ISP 20 0.5 OSCILLATOR FREQUENCY (kHz) TA = 25°C 0 0 100 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 20 40 60 80 100 1 10 100 VCTRL (V) DUTY CYCLE (%) RT (kΩ) 3518 G01 3518 G02 3518 G03
VISP – VISN Threshold Switch Current Limit Oscillator Frequency vs Temperature vs Temperature vs Temperature
104 3.0 2.5 VIN = 5V VIN = 5V VIN = 5V 103 VISP = 24V RT = 6.04k VC = 1V 2.8 2.3 102 VCTRL = 2V 101 2.6 2.1 100 THRESHOLD (mV) 2.4 1.9 ISN 99 TOR FREQUENCY (MHz) – V CURRENT LIMIT (A) 98 V ISP 2.2 OSCILLA 1.7 97 96 2.0 1.5 –40 –20 0 20 40 60 80 100 120 140 160 –40 –15 –10 35 60 85 110 135 160 –40 –20 0 20 40 60 80 100 120 140 160 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3518 G04 3518 G05 3518 G06
Reference Voltage VISP – VISN Threshold vs VISP vs Temperature Quiescent Current vs VIN
105 2.02 8 VCTRL = 2V V TA = 25°C 104 IN = 5V VIN = 5V 7 VC = 0V 103 TA = 25°C VC = 1V 2.01 6 102 101 5 100 (V) 2.00 4 THRESHOLD (mV) V REF ISN 99 CURRENT (mA) 3 – V 98 V IN 1.99 2 V ISP 97 96 1 95 1.98 0 0 10 20 30 40 50 –40 –20 0 20 40 60 80 100 120 140 160 0 10 20 30 40 VISP (V) TEMPERATURE (°C) VIN (V) 3518 G07 3518 G08 3518 G09 3518ff For more information www.linear.com/LT3518 5 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 Switch Current Limit VISP – VISN Threshold vs VCTRL vs Duty Cycle Oscillator Frequency vs RT
120 3.0 10000 VIN = 5V TA = 25°C VISP = 24V 100 VC = 1V 2.5 TA = 25°C 80 2.0 60 1.5 1000 THRESHOLD (mV) ISN 40 1.0 – V CURRENT LIMIT (A) V ISP 20 0.5 OSCILLATOR FREQUENCY (kHz) TA = 25°C 0 0 100 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 20 40 60 80 100 1 10 100 VCTRL (V) DUTY CYCLE (%) RT (kΩ) 3518 G01 3518 G02 3518 G03
VISP – VISN Threshold Switch Current Limit Oscillator Frequency vs Temperature vs Temperature vs Temperature
104 3.0 2.5 VIN = 5V VIN = 5V VIN = 5V 103 VISP = 24V RT = 6.04k VC = 1V 2.8 2.3 102 VCTRL = 2V 101 2.6 2.1 100 THRESHOLD (mV) 2.4 1.9 ISN 99 TOR FREQUENCY (MHz) – V CURRENT LIMIT (A) 98 V ISP 2.2 OSCILLA 1.7 97 96 2.0 1.5 –40 –20 0 20 40 60 80 100 120 140 160 –40 –15 –10 35 60 85 110 135 160 –40 –20 0 20 40 60 80 100 120 140 160 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3518 G04 3518 G05 3518 G06
Reference Voltage VISP – VISN Threshold vs VISP vs Temperature Quiescent Current vs VIN
105 2.02 8 VCTRL = 2V V TA = 25°C 104 IN = 5V VIN = 5V 7 VC = 0V 103 TA = 25°C VC = 1V 2.01 6 102 101 5 100 (V) 2.00 4 THRESHOLD (mV) V REF ISN 99 CURRENT (mA) 3 – V 98 V IN 1.99 2 V ISP 97 96 1 95 1.98 0 0 10 20 30 40 50 –40 –20 0 20 40 60 80 100 120 140 160 0 10 20 30 40 VISP (V) TEMPERATURE (°C) VIN (V) 3518 G07 3518 G08 3518 G09 3518ff For more information www.linear.com/LT3518 5 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