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L6982CDR 数据表(PDF) 29 Page - STMicroelectronics |
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L6982CDR 数据表(HTML) 29 Page - STMicroelectronics |
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29 / 48 page  9 Application board The figure below shows the reference evaluation board schematic: Figure 30. Evaluation board schematic EN VIN _L6982 R6 n.m. C1 10 mF L3 MPZ2012S221A L1 22mH + C10 n.m. C6 TP3 VIN TP2 CLK_IN R5 n.m. L4 4.7 mH R1 0 Ohm TP4 GND J2 C8 10pF C2 1 mF U1 L6982CDR SW 1 BOOT 2 VCC 3 FB 4 EN/ SY NC 5 AGND 6 VIN 7 PGND 8 TP6 VOUT J1 L1 MSS1038T-223ML R2 402K C11 4.7 mF C5 10 mF VIN _L6982 C14 C7 100nF C13 n.m. TP5 GND C12 EMI FIlters. Optional Component s R4 10k C9 n.m. EN C4 22 mF TP1 EN L2 n.m. R3 82.5K C3 1 mF 10V 4.7 mF 4.7 mF 10 mF The additional input filter (C11, L3, C12, L4, C14 and C10) limits the conducted emission on the power supply. Table 9. Bill of material Reference Part number Description Manufacturer C1 C3216X7R1H106K160AC 10 µF TDK C2 CGA4J3X7R1H105K125AB 1 µF TDK C3 1 µF C4 GRJ32EC71E226KE11 22 µF Murata C5, C6 C3216X7R1H106K160AC 10 µF TDK C7 100 nF C8 10 pF C9 n.m. C10 n.m. C11, C12, C14 GRM31CR71H475KA12 4.7 µF Murata C13 L1 MSS1038T-223ML 22 µH Coilcraft L2 n.m. L3 MPZ2012S221AT000 220 Ω, 100 MHz TDK L4 XAL4030-472ME 4.7 µH Coilcraft R1 0 Ω R2 402 kΩ L6982 Application board DS13683 - Rev 1 page 29/48 |
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