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LTC3602 датащи(PDF) 22 Page - Linear Technology |
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LTC3602 датащи(HTML) 22 Page - Linear Technology |
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22 / 28 page ![]() LTC3633A-2/LTC3633A-3 22 3633a23f APPLICATIONS INFORMATION RUN1 RUN2 RT TRACKSS2 PGOOD2 LTC3633A-2 BOOST2 3633a23 F09 0.1μF L2 1μH R4 54.9k R3 12.1k SW2 VON2 PVIN2 PVIN1 SVIN VFB2 PHMODE TRACKSS1 PGOOD1 BOOST1 SW1 VON1 VFB1 COUT2 22μF VOUT2 3.3V AT 3A 0.1μF L1 0.68μH R2 24.3k R1 12.1k COUT1 47μF VOUT1 1.8V AT 3A VIN 12V CIN 47μF ×2 R5 162k MODE/SYNC ITH1 ITH2 INTVCC C2 2.2μF PGND SGND Figure 9. Design Example Circuit Figure 10. Example of Power Component Layout for QFN Package Figure 11. Example of Power Component Layout for TSSOP Package SW2 CBOOST2 CBOOST1 CVCC SW1 VIAS TO GROUND PLANE VIA TO GROUND PLANE VIAS TO GROUND PLANE VIAS TO GROUND PLANE VIA TO BOOST1 VIA TO BOOST2 VIA TO VON2/R4 (NOT SHOWN) VIA TO VON1/R2 (NOT SHOWN) VOUT2 GND VIN GND VOUT1 SGND (TO NONPOWER COMPONENTS) 3633a23 F10 COUT2 CIN CIN COUT1 L2 L1 SW1 SW2 VIAS TO GROUND PLANE VIAS TO GROUND PLANE VIAS TO GROUND PLANE VIAS TO GROUND PLANE VIA TO BOOST2 VIA TO BOOST1 VIA TO VON2 AND R4 (NOT SHOWN) VIA TO VON1 AND R2 (NOT SHOWN) VOUT2 VOUT1 SGND (TO NONPOWER COMPONENTS) 3633a23 F11 L1 L2 COUT2 COUT1 CIN CIN GND GND VIN CBOOST1 CBOOST2 CVCC |
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