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LM2647 датащи(PDF) 23 Page - National Semiconductor (TI) |
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LM2647 датащи(HTML) 23 Page - National Semiconductor (TI) |
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23 / 25 page ![]() Bill of Materials Designator Function Descrtiption Type Vendor C1 Cin (Ch #2) 10µF, 25V, X7R 1812 TDK C4 Comp cap (across RC, Ch #2) 15pF, 6.3V, X7R 1206 Vishay C5 Comp cap (series with R, Ch #2) 680pF, 6.3V, X7R 1206 Vishay C6 Comp cap (series with R, Ch #1) 680pF, 6.3V, X7R 1206 Vishay C7 Comp cap (across RC, Ch #1) 15pF, 6.3V, X7R 1206 Vishay C14 Cff (Ch #2) 680pF, 6.3V, X7R 1206 Vishay C15 Soft-start cap (Ch #2) 0.1µF, 6.3V/25V, X7R 1206 Vishay C16 Soft-start cap (Ch #1) 0.1µF, 6.3V/25V, X7R 1206 Vishay C17 Cff (Ch #1) 680pF, 6.3V, X7R 1206 Vishay C22 Cout1 (Ch #2) (optional) 330µF,10V, Ta 593 Series Vishay C23 Cout2 (Ch #2) 330µF,10V, Ta 593 Series Vishay C25 Cout1 (Ch #1) 330µF,10V, Ta 593 Series Vishay C26 Cout2 (Ch #1) (optional) 330µF,10V, Ta 593 Series Vishay C28 Cboot (Ch #2) 0.1µF, 6.3V, X7R 1206 Vishay C29 V5 decoupling 0.1µF, 6.3V, X7R 1206 Vishay C30 Cboot (Ch #1) 0.1µF, 6.3V, X7R 1206 Vishay C31 VDD decoupling 0.1µF, 6.3V, X7R 1206 Vishay C32 Cin (Ch #1) 10µF, 25V, X7R 1812 TDK R1 V5 to VDD series pass 10 Ω, 5% 1812 Vishay R6 Comp res (series with C, Ch #2) 57.6k, 1% 1206 Vishay R7 RLIM (Ch #2) 2.94k, 1% 1206 Vishay R8 RLIM (Ch #1) 2.94k, 1% 1206 Vishay R9 Comp res (series with C, Ch #1) 57.6k, 1% 1206 Vishay R14 Rff (Ch #2) 12.7k, 1% 1206 Vishay R15 Res divider, upper (Ch #2) 43.2k, 1% 1206 Vishay R16 Res divider, lower (Ch #2) 9.53k, 1% 1206 Vishay R17 Enable pullup 12.7k, 1% 1206 Vishay R18 FPWM pullup 12.7k, 1% 1206 Vishay R19 Freq Adjust 22.1k, 1% 1206 Vishay R20 PGOOD pullup 12.7k, 1% 1206 Vishay R21 Res divider, upper (Ch #1) 43.2k, 1% 1206 Vishay R22 Res divider, lower (Ch #1) 5.9k, 1% 1206 Vishay R23 Rff (Ch #1) 12.7k, 1% 1206 Vishay L1 Inductor (Ch #1) 10µH,4.4A CDRH104R Sumida L2 Inductor (Ch #2) 10µH,4.4A CDRH104R Sumida D1 Bootstrap diode (Ch #2) BAT54LT1 SOT-23 Onsemi D2 Bootstrap diode (Ch #1) BAT54LT1 SOT-23 Onsemi Q1 Upper FET (Ch #1) Si4828DY (half) SO-8 Vishay Q2 Lower FET (Ch #1) Si4828DY (half) SO-8 Vishay Q3 Upper FET (Ch #2) Si4828DY (half) SO-8 Vishay Q4 Lower FET (Ch #2) Si4828DY (half) SO-8 Vishay Q5 Controller LM2647 TSSOP National U1 Dual SPDT switch (see Schematic) CKN1276-ND DIP Grayhill www.national.com 23 |
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