SiC476, SiC477, SiC478, SiC479 www.vishay.com Vishay Siliconix SiC47x microBUCK FAMILY SCHEMATIC EN R_ EN _ H R_ EN _ L Heading 560K DNP t 3 o o 3. NC PG t b o F o μ R_ R_ PGD _b 1 C 0. Notes in small 102K CSS 33 nF black text near 3 6 5 4 18 2 component EN 19 Rmode values refer to E2 E1 27 Mode Vishay SiC46x S S NC SS OOD 1 V A A OOT G 2 K spreadsheet CIN B P CDD PH PH 29 26 calcualtor VIN-PAD VDD references 7 1 μF V 1 IN +V 25 IN 8 I V 2 LIMIT IN 6 V to 55 V CIN_D R_ fsw 0 .1 μF 28 24 A SiC476 f GND-PAD SW 30 SiC477 52 .3 K PGND-PAD SiC478 23 9 SiC479 A P 1 GND GND 10 P 2 R_ FB_ L GND 22 V 11 FB P 3 GND 10 K C 17 IN 21 PGND NC 47 μF T L DRV W1 W2 W3 OU G V S S S V AGND 15 16 12 13 14 20 R_ FB_ H 52 .3 K Analog ground +V = 5 V OUT (A ), and power GND CDRV L ground (P ) 0 .1 μF 64 μF 64 μF GND are tied internally 4 .7 μF C C C OUT_D OUT_C OUT_B in the SiC46x PGND Fig. 9 - SiC477 Configured for 6 V to 55 V Input, 5 V Output at 8 A, 500 kHz Operation with Power Save Mode Enabledall Ceramic Output Capacitance Design S19-0910-Rev. C, 28-Oct-2019 9 Document Number: 77113 For technical questions, contact: powerictechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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