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LM3431 Datasheet(PDF) 8 Page - Texas Instruments |
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LM3431 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 36 page ILED 5 mA/Div Vcathode 100 mV/Div REFIN 10 mV/Div 1 Ps/DIV 400 ns/DIV ILED 50 mA/Div NDRV (FET) 2V/Div NDRV (NPN) 1V/Div DIM 5V/Div Vout 100 mV/Div Vsw 20V/Div ILED 200 mA/Div 400 Ps/DIV 200 Ps/DIV Vout 200 mV/Div ILED 5 mA/Div VIN 5V/Div 0.94 0.96 0.98 1.00 1.02 1.04 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) INPUT VOLTAGE (V) 50 60 70 80 90 100 5 9 13 17 21 100% dimming duty 10% 50% LM3431 SNVS547F – NOVEMBER 2007 – REVISED MARCH 2009 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) Unless otherwise specified the following conditions apply: VIN = 12V, TJ = 25°C. Normalized Switching Frequency Efficiency vs. vs. Temperature (700 kHz) Input Voltage LED Current = 140 mA x 3, LED Vf = 25V Figure 8. Figure 9. Line Transient Response Dimming Transient Response Figure 10. Figure 11. LED Ripple Current NDRV Waveforms Figure 12. Figure 13. 8 Submit Documentation Feedback Copyright © 2007–2009, Texas Instruments Incorporated Product Folder Links: LM3431 |
Número de pieza similar - LM3431_14 |
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Descripción similar - LM3431_14 |
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