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For complete documentation, view the LTC3543 page

Part Number* Description Package Pins Price (1-99) Price (100+) QTY
LTC3543EDCB#PBF * Buck Regulator w/ PLL, Soft Start & Spread Spectrum in DFN DFN 6 $2.79 $2.29
LTC3543EDCB#TRMPBF Buck Regulator w/ PLL, Soft Start & Spread Spectrum in DFN DFN 6 $2.79 $2.29
LTC3543EDCB#TRPBF Buck Regulator w/ PLL, Soft Start & Spread Spectrum in DFN DFN 6 $2.79 $2.29

Demo Boards

Part Number* Description Price (1-99) QTY
DC1008A LTC3543EDC8 Demo Board | 2.5V ≤ VIN ≤ 5.5V, VOUT = 1.8V @ 600mA 1 Contact Factory

* When ordering part numbers ending in #TR or #TRM for quantities less than (or not an even multiple of) a full reel, parts will be shipped in bulk or cut tape