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ISL97650 Datasheet(PDF) 7 Page - Renesas Technology Corp |
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ISL97650 Datasheet(HTML) 7 Page - Renesas Technology Corp |
7 / 20 page ISL97650 FN9198 Rev.4.00 Page 7 of 20 April 17, 2009 FIGURE 9. BUCK DISCONTINUOUS MODE FIGURE 10. THRESHOLD OF BUCK FROM DC TO CC MODE FIGURE 11. BOOST CONVERTER PULSE-SKIPPING MODE WAVEFORM FIGURE 12. TRANSIENT RESPONSE OF BOOST FIGURE 13. TRANSIENT RESPONSE OF BUCK FIGURE 14. START-UP SEQUENCE Typical Performance Curves (Continued) 400ns/DIV Ch1 = LX(buck)(5V/DIV) Ch2 = Io(Buck)(10mA/DIV) 400ns/DIV Ch1 = LX(buck)(5V/DIV) Ch2 = Io(Buck)(10mA/DIV) Ch1 = VIN Ch2 = LX, Ch3 = AVDD, Ch4 = IINDUCTOR 1ms/DIV Ch1 = AVDD(VBOOST)(100mV/DIV) Ch2 = Io(Boost)(100mA/DIV) 1ms/DIV Ch1 = VLOGIC(VBUCK)(10mV/DIV) Ch2 = Io(Buck)(100mA/DIV) Ch1 = CDLY, Ch2 = VREF, Ch3 = VLOGIC, Ch4 = VON R1 = AVDD, R2 = AVDD_DELAY, R3 = VOFF |
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