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W-6137 Datasheet(PDF) 4 Page - Copal Electronics |
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W-6137 Datasheet(HTML) 4 Page - Copal Electronics |
4 / 16 page W-6137 4 TYPICAL CHARACTERISTICS (VIN = 3.6 V, CIN = 1.0 F, COUT = 0.22 F, L = 22 H with 3 LEDs at 20 mA, TAMB = 25 C, unless otherwise specified.) Figure 2. Quiescent Current vs. VIN (Not Switching) Figure 3. Quiescent Current vs. VIN (Switching) ) V ( E G A T L O V T U P N I ) V ( E G A T L O V T U P N I 5.0 4.5 4.0 3.5 3.0 2.5 0 20 40 60 80 100 120 5.0 4.5 4.0 3.5 3.0 2.5 0 0.25 0.50 0.75 1.00 Figure 4. FB Pin Voltage vs. Supply Voltage Figure 5. FB Pin Voltage vs. Output Current ) A m ( T N E R R U C T U P T U O ) V ( E G A T L O V T U P N I 4.5 5.0 4.0 3.5 3.0 2.5 290 295 300 305 310 30 25 20 15 10 5 0 290 295 300 305 310 Figure 6. Switching Frequency vs. Supply Voltage Figure 7. Switch ON Resistance vs. Input Voltage INPUT VOLTAGE (V) 4.0 4.5 3.5 3.0 2.5 0.90 0.95 1.00 1.05 1.10 VFB = 0.4 V 3 LEDs INPUT VOLTAGE (V) 4.5 4.0 5.0 3.5 3.0 2.5 0 0.5 1.0 1.5 2.0 3 LEDs 3 LEDs at 20 mA |
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