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ISL97672B Datasheet(PDF) 7 Page - Renesas Technology Corp |
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ISL97672B Datasheet(HTML) 7 Page - Renesas Technology Corp |
7 / 17 page ISL97672B FN7995 Rev.3.00 Page 7 of 17 Sep 7, 2017 FIGURE 8. EFFICIENCY vs VIN vs TEMPERATURE AT 20mA (100% LED DUTY CYCLE) FIGURE 9. CHANNEL-TO-CHANNEL CURRENT MATCHING FIGURE 10. CURRENT LINEARITY vs LOW LEVEL PWM DIMMING DUTY CYCLE vs VIN FIGURE 11. VHEADROOM vs VIN AT 20mA FIGURE 12. VOUT RIPPLE VOLTAGE, VIN = 12V, 6P12S AT 20mA/CHANNEL FIGURE 13. START UP WAVEFORMS AT VIN = 6V FOR 6P12S AT 20mA/CHANNEL Typical Performance Curves (Continued) 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 25 30 +25°C -40°C 0°C +85°C VIN 0.40 0.10 0.20 0.30 -0.10 -0.20 0.00 01234 5 CHANNEL 6 -0.30 -0.40 7 21 VIN 12 VIN 4.5 VIN 0 0.2 0.4 0.6 0.8 1.0 1.2 01 4 DC 23 5 6 4.5 VIN 12 VIN 0.40 0.45 0.50 0.55 0.60 0 5 10 15 20 25 30 -40°C 0°C +25°C VIN (V) 2.00µs/DIV VO = 50mV/DIV V_OUT V_EN V_LX I_INDUCTOR V_OUT V_EN V_LX I_INDUCTOR |
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