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AP3029KTTR-E1 Datasheet(PDF) 6 Page - BCD Semiconductor Manufacturing Limited |
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AP3029KTTR-E1 Datasheet(HTML) 6 Page - BCD Semiconductor Manufacturing Limited |
6 / 16 page 6 Aug. 2008 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Preliminary Datasheet WHITE LED STEP-UP CONVERTER AP3029 Typical Performance Characteristics Figure 6. Efficiency vs. LED's Number Figure 7. Schottky Forward Current Figure 4. Efficiency vs. Junction Temperature Figure 5. Efficiency vs. Input Voltage vs. Schottky Forward Drop (VF of WLED is 3.45V @ IF=20mA, unless otherwise noted ) 0 200 400 600 800 1000 0 50 100 150 200 250 300 350 Schottky Forward Drop (mV) -50 -25 0 25 50 75 100 77 78 79 80 81 82 83 84 85 V IN =3.6V, I OUT =20mA, 4 LEDs C IN =1µF, C OUT =0.22µF, L=22µH Junction Temperature ( oC) 2.5 3.0 3.5 4.0 4.5 5.0 77 78 79 80 81 82 83 84 85 I OUT =20mA, 4 LEDs, T A =25 OC C IN =1µF, C OUT =0.22µF, L=22µH Input Voltage (V) 23 4 56 77 78 79 80 81 82 83 84 85 V IN =3.6V, I OUT =20mA, T A =25 OC C IN =1µF, C OUT =0.22µF, L=22µH LEDs (PCS) |
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