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RT9907 Datasheet(PDF) 2 Page - Richtek Technology Corporation |
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RT9907 Datasheet(HTML) 2 Page - Richtek Technology Corporation |
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2 / 19 page  RT9907 Preliminary 2 DS9907-07 August 2007 www.richtek.com Typical Application Circuit Figure 1. Typical Application Circuit for 1-cell Li+ Battery 1-cell Li+ Battery 3.4V to 4.2V VDD3 ENM FB3 EN1 LX3 COMP1 SS EN3 EN2 COMP2 COMP3 LX2 VDD2 FB1 VDD1 LX1 FB2 4.7 μH 20k 10k 4.7nF 1nF 1nF 4.7 μH 3.3V/500mA 2 3 24 1 22 5 64 16 15 20 19 21 17 18 14 10 9 12 13 8 RT9907 11 7, 23, Exposed Pad (25) 680k 470k 100pF 150k 10 μF x 4 VBAT 10 μF 5V/500mA 30k 1nF 100pF 200k 220k 4.7μH 1.5V/500mA VBAT VBAT 10 μF x 4 10 μF x 4 10 μF 0.1 μF 10 μF x 2 10 μF x 2 SS0520 130k Chip Enable 1 μF |
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