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RT8577 Datasheet(PDF) 2 Page - Richtek Technology Corporation |
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RT8577 Datasheet(HTML) 2 Page - Richtek Technology Corporation |
2 / 12 page 2 DS8577-00 November 2011 www.richtek.com RT8577 Typical Application Circuit Figure 1. General Application Figure 2. External P-MOSFET Isolation Application LED1 LED4 VOUT 3, 17, 18, 21 (Exposed Pad) GND 2 19 VC 9 560 0.22µF RC CC PGND 13 11 6 External/Internal PWM EN PWM : : : : : : : : ROVP2 ROVP1 COUT 4.7µF x 6 RRT RT 8 9.1k RISET 5 RISET CREG 15 CREG CSS 10 SS 0.1µF 1µF 47µF CIN CF RF1 RSENSE RDRV 5 1µF CVCC …… VIN 9V to 28V 14 12 16 DRV SEN VCC MSW OVP/UVP 4 Chip Enable RT8577 10µH L1 D1 STATUS RSTATUS 100k 7 FLT RF2 1k 1k 100 0 1nF VIN 100m 56k 3.3M 82k 45V : : : : LED2 1 3, 17, 18, 21 (Exposed Pad) GND VC 9 560 0.22µF RC CC PGND 13 11 6 External/Internal PWM EN PWM RRT RT 8 9.1k RISET 5 RISET CREG 15 CREG CSS 10 SS 0.1µF 1µF 47µF CIN CF RF1 RSENSE RDRV 5 1µF CVCC VIN 9V to 28V 14 12 16 DRV SEN VCC MSW OVP/UVP 1 Chip Enable RT8577 10µH L1 D1 STATUS RSTATUS 100k 7 FLT RF2 1k 1k 100 0 1nF VIN FLT 100m 56k ROVP2 ROVP1 3.3M 82k LED1 LED4 VOUT 2 19 : : : : : : : : COUT 4.7µF x 6 …… 45V : : : : LED2 1 |
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