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LM3697 Datasheet(PDF) 7 Page - Texas Instruments |
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LM3697 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 36 page  0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 0.92 2.5 3 3.5 4 4.5 5 5.5 VIN (V) One String, L=10µH, 500kHz C002 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 0.92 2.5 3 3.5 4 4.5 5 5.5 VIN (V) One String, L=10µH, 1MHz C002 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 2.5 3 3.5 4 4.5 5 5.5 VIN (V) Two String, L=10µH, 500kHz C002 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 2.5 3 3.5 4 4.5 5 5.5 VIN (V) Two String, L=10µH, 1MHz C002 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 2.5 3 3.5 4 4.5 5 5.5 VIN (V) Three String, L=10µH, 500kHz C002 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 2.5 3 3.5 4 4.5 5 5.5 VIN (V) Three String, L=10µH, 1MHz C002 LM3697 www.ti.com SNOSCS2A – NOVEMBER 2013 – REVISED DECEMBER 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 3.6V, LEDs are WLEDs part # SML-312WBCW(A), Typical Application Circuit with L = TDK (VLF302512, 4.7 µH, 10 µH, 22 µH where specified), Schottky = On-Semi (NSR0240V2T1G), TA = +25°C unless otherwise specified. Efficiency is given as VOUT × (IHVLED1 + IHVLED2 + IHVLED3)/(VIN × IIN), matching curves are given as (ΔILED_MAX/ILED_AVE). Top to Bottom: 3x3, 3x4, 3x5, 3x6, 3x7 (LEDs) Top to Bottom: 3x3, 3x4, 3x5, 3x6, 3x7 (LEDs) Figure 9. LED Efficiency vs VIN, 20.2 mA/String Figure 10. LED Efficiency vs VIN, 20.2 mA/String Top to Bottom:2x3, 2x4, 2x5, 2x6, 2x7, 2x8, 2x9, 2x10 (LEDs) Top to Bottom:2x3, 2x4, 2x5, 2x6, 2x7, 2x8, 2x9, 2x10 (LEDs) Figure 11. LED Efficiency vs VIN, 20.2 mA/String Figure 12. LED Efficiency vs VIN, 20.2 mA/String Top to Bottom:1x3, 1x4, 1x5, 1x6, 1x7, 1x8, 1x9, 1x10 (LEDs) Top to Bottom:1x3, 1x4, 1x5, 1x6, 1x7, 1x8, 1x9, 1x10 (LEDs) Figure 13. LED Efficiency vs VIN, 20.2 mA/String Figure 14. LED Efficiency vs VIN, 20.2 mA/String Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: LM3697 |
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