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FAN5776 Datasheet(PDF) 8 Page - Fairchild Semiconductor |
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FAN5776 Datasheet(HTML) 8 Page - Fairchild Semiconductor |
8 / 15 page © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5776 • Rev. 1.1.0 8 Typical Characteristics VIN = 3.7 V, TA = 25°C, ILED = 5 x 20 mA, VOUT = 6.8 V, L1 = 4.7 µH, COUT = 10 µF (unless otherwise specified). 70 80 90 100 110 120 130 2.50 3.50 4.50 5.50 VIN (V) VOUT = 7.8 V VOUT = 8.8 V VOUT = 6.8 V VOUT = 5.8 V -500 -300 -100 100 300 500 0 5 10 15 20 Time (µs) Figure 10. Maximum Output Current (ILED = 5 x 25 mA) vs. Input Voltage vs. Output Voltage Figure 11. LED Current Ripple Time Base 300µs/div VIN = 3.70V-3.35 V-3.70 V, slope 30 µs/V 500 mV/div SI LED 10 mA/div 500 550 600 650 700 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) Figure 12. Line Transient Response VIN = 3.70 - 3.35 V - 3.70 V with ILED = 5 x 25 mA Figure 13. Peak Inductor Current Limit (Closed Loop) vs. Input Voltage 0.00 0.20 0.40 0.60 0.80 1.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 VIN (V) 0 30 60 90 120 150 0 50 100 150 200 RSET Resistance (k) Figure 14. Shutdown Current vs. Input Voltage Figure 15. Total Output Current ILED vs. RSET Resistor Value |
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