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SP6645EU Datasheet(PDF) 6 Page - Exar Corporation |
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SP6645EU Datasheet(HTML) 6 Page - Exar Corporation |
6 / 15 page 6 Date: 11/30/04 SP6644/6645 High Efficiency Boost Regulator © Copyright 2004 Sipex Corporation Figure 17. SP6644/6201 DC/DC LDO Combination Efficiency vs. Output Current (Vout=3.3V), Rlim=2.5k, Li=22 µH Sumida CD-43, Refer to Figure 30 Figure 18. SP6644/6201 LDO Line/Load Rejection vs. Output Current (Vout=3.3V), Rlim=2.5k, Li=22 µH Sumida CD-43, Refer to Figure 30 Figure 19. SP6644/6201 DC/DC LDO Maximum Load Current vs. Vbatt (Vout=3.3V), Rlim=2.5k, Li=22 µH Sumida CD-43, Refer to Figure 30 Figure 20. SP6644/6201 DC/DC LDO No-Load Ibatt vs. Vbatt (Vout=3.3V), Rlim=2.5k, Li=22 µH Sumida CD- 43, Refer to Figure 30 Figure 21. SP6644/6201 DC/DC LDO Output Ripple Voltage (Vout=3.3V), Rlim=2.5k, Li=22 µH Sumida CD- 43, Refer to Figure 30 Figure 22. Load Transient Response, Vbatt=1.3V, (Vout=3.3V), Rlim=2.5k, Li=22 µH Sumida CD-43 Figure 23. Line Transient Response, (Vout=3.3V), Rlim=2.5k, Iload=22 µH Sumida CD-43 Figure 24. Switching Waveforms, (Vout=3.3V), Vbatt=1.3V, Rlim=2.5k, Iload=10mA, Li=22 µH Sumida CD-43 Refer to the circuit in Figure 28, T AMB = +25 oC unless otherwise noted. 30 40 50 60 70 80 90 100 0.1 1.0 10.0 100.0 1000.0 Iload (mA) Vb=1.0V Vb=1.3V Vb=2.0V Vb=2.6V Vb=3.2V 3.032 3.033 3.034 3.035 3.036 3.037 020 40 6080 100 120 140 160 180 200 Iload (mA) Vb=1.3V Vb=2.6V 0 20 40 60 80 100 120 140 160 180 200 220 240 0.0 1.0 2.0 3.0 4.0 Vbatt (V) 10 100 1000 10000 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Vbatt (V) SP6201 Out 10mV/div SP6644 Out 20mV/div Li 0.5A/div V OUT 50mV/div V BATT 50mV/div V OUT 50mV/div V BATT 1V/div Li 0.2A/div V OUT, VLX,VBATT 1V/div PERFORMANCE CHARACTERISTICS |
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