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ISL97635A Datasheet(PDF) 8 Page - Intersil Corporation |
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ISL97635A Datasheet(HTML) 8 Page - Intersil Corporation |
8 / 28 page 8 FN6564.2 December 22, 2008 FIGURE 6. CHANNEL-TO-CHANNEL CURRENT MATCHING FIGURE 7. CURRENT MATCHING vs DUTY CYCLE vs DIMMING FREQUENCY FIGURE 8. PWM DIMMING LINEARITY FIGURE 9. LX, IIN, IL AND LO FIGURE 10. IL AT 50% PWM DIMMING FIGURE 11. IL ZOOM IN AT PWM DIMMING ZOOM IN Typical Performance Curves (Continued) -0.020 -0.015 -0.010 -0.005 0 0.005 0.010 0.015 0.020 Ch 0 Ch 1 Ch 2 Ch 3 Ch 4 Ch 5 CHANNELS 6P9S = 54 LEDs 6V/1mA 6V/20mA 12V/1mA 12V/20mA 0.5 0.6 0.7 0.8 0.9 1.0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 PWM DUTY CYCLE 10kHz 200Hz 1kHz 100Hz 20kHz VIN = 12V 0 20 40 60 80 100 120 140 160 180 0 1020 3040 506070 80 90 100 PWM DUTY CYCLE (%) VIN = 18V VIN = 6V VIN = 12V 6 CHANNELS 9 LEDs PER CHANNEL ISL97635A |
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