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For complete documentation, view the LTC3126 page

Part Number* Description Package Pins Price (1-99) Price (100+) QTY
LTC3126EFE#PBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath TSSOP 28 $9.29 $7.89
LTC3126EFE#TRPBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath TSSOP 28 $9.35 $7.95
LTC3126EUFD#PBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath QFN 28 $8.93 $7.59
LTC3126EUFD#TRPBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath QFN 28 $8.99 $7.65
LTC3126HFE#PBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath TSSOP 28 $10.57 $8.99
LTC3126HFE#TRPBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath TSSOP 28 $10.63 $9.05
LTC3126IFE#PBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath TSSOP 28 $10.22 $8.68
LTC3126IFE#TRPBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath TSSOP 28 $10.28 $8.74
LTC3126IUFD#PBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath QFN 28 $9.83 $8.35
LTC3126IUFD#TRPBF 42V, 2.5A Synchronous Step-Down Regulator with Lossless PowerPath QFN 28 $9.89 $8.41

Demo Boards

Part Number* Description Price (1-99) QTY
DC2215A LTC3126EUFD Demo Board | Dual Input Sync Buck, 4.3V ≤ VIN1 ≤ 42V, 6V ≤ VIN2 ≤ 8.4V (Operational to 42V), VOUT = 3.3V @ 2.5A 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