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LM3502SQ-25 Arkusz danych(PDF) 9 Page - Texas Instruments |
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LM3502SQ-25 Arkusz danych(HTML) 9 Page - Texas Instruments |
9 / 28 page 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0 27.5 30.0 32.5 35.0 LED CURRENT (mA) 40 45 50 55 60 65 70 75 80 85 90 2.5 VIN = 5.5V VIN = 3.3V VIN = 2.7V VIN = 4.2V VIN = 3V 2 12 22 32 42 52 62 LED CURRENT (mA) 40 45 50 55 60 65 70 75 80 85 90 VIN = 2.7V VIN = 3V VIN = 3.3V VIN = 4.2V VIN = 5.5V -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 TEMPERATURE ( oC) 1.75 1.95 -40 1.80 1.85 1.90 VIN = 2.5V 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) 1.50 2.00 2.50 3.00 3.50 4.00 2.5 25 oC 125 oC -40 oC -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 TEMPERATURE ( oC) 0.93 0.94 0.95 0.96 0.97 0.98 0.99 1.00 1.01 1.02 1.03 -40 VIN = 2.5V 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) 0.400 0.440 0.480 0.520 0.560 0.600 2.5 -40 oC 0.420 0.460 0.500 0.540 0.580 125 oC 25 oC LM3502 www.ti.com SNVS339A – SEPTEMBER 2005 – REVISED AUGUST 2006 Typical Performance Characteristics ( Circuit in Figure 1: L = DO1608C-223 and D = MBRM140T3. Efficiency: η = POUT/PIN = [(VOUT – VFb) * IOUT]/[VIN * IIN]. TA= 25°C, unless otherwise stated.) IQ (Non-Switching) Switching Frequency vs vs VIN Temperature Figure 7. Figure 8. IQ (Switching) IQ (Switching) vs vs VIN Temperature Figure 9. Figure 10. 10 LED Efficiency 8 LED Efficiency vs vs LED Current LED Current Figure 11. Figure 12. Copyright © 2005–2006, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: LM3502 |
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