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LM3445M Fiches technique(PDF) 5 Page - Texas Instruments |
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LM3445M Fiches technique(HTML) 5 Page - Texas Instruments |
5 / 39 page 200.0 190.0 180.0 170.0 160.0 150.0 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (°C) 1.29 1.28 1.27 1.26 1.25 -50 -25 0 25 50 75 100 125 150 OFF Threshold at C11 TEMPERATURE (°C) 8.0 7.5 7.0 6.5 6.0 -50 -25 0 25 50 75 100 125 150 UVLO (VCC) Rising UVLO (VCC) Falling TEMPERATURE (°C) 300 280 260 240 220 200 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (°C) LINE VOLTAGE (VAC) 300k 250k 200k 150k 100k 50k 0 80 90 100 110 120 130 140 C11 = 2.2 nF, R3 = 348 k: 7 LEDs in Series (VO = 24.5V) LINE VOLTAGE (VAC) 95.0 90.0 85.0 80.0 75.0 80 90 100 110 120 130 140 14 Series connected LEDs 10 Series connected LEDs LM3445 www.ti.com SNVS570L – JANUARY 2009 – REVISED MAY 2013 TYPICAL PERFORMANCE CHARACTERISTICS fSW vs Input Line Voltage Efficiency vs Input Line Voltage Figure 3. Figure 4. BLDR Resistor vs Temperature VCC UVLO vs Temperature Figure 5. Figure 6. Min On-Time (tON) vs Temperature Off Threshold (C11) vs Temperature Figure 7. Figure 8. Copyright © 2009–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM3445 |
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