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For complete documentation, view the LTC3521 page

Part Number* Description Package Pins Price (1-99) Price (100+) QTY
LTC3521EFE#PBF Synchronous 1A, Buck-Boost and Dual 400mA Buck Converters TSSOP 20 $4.93 $4.19
LTC3521EFE#TRPBF Synchronous 1A, Buck-Boost and Dual 400mA Buck Converters TSSOP 20 $4.29
LTC3521EUF#PBF Synchronous 1A, Buck-Boost and Dual 400mA Buck Converters QFN 24 $4.64 $3.95
LTC3521EUF#TRPBF Synchronous 1A, Buck-Boost and Dual 400mA Buck Converters QFN 24 $4.05
LTC3521IFE#PBF 1A Buck-Boost and Dual 600mA Buck Synchronous DC/DC Converters TSSOP 20 $5.67 $4.82
LTC3521IFE#TRPBF 1A Buck-Boost and Dual 600mA Buck Synchronous DC/DC Converters TSSOP 20 $4.92
LTC3521IUF#PBF 1A Buck-Boost and Dual 600mA Buck Synchronous DC/DC Converters QFN 24 $5.34 $4.54
LTC3521IUF#TRPBF 1A Buck-Boost and Dual 600mA Buck Synchronous DC/DC Converters QFN 24 $4.64

Demo Boards

Part Number* Description Price (1-99) QTY
DC1389A LTC3521EUF Demo Board | Buck-Boost Plus Dual Buck, 2.4V ≤ VIN ≤ 5V, Vout1 = 3.3V @ 0.8A, Vout2=1.2V @ 0.6A, Vout3 = 1.8V @ 0.6A $125.00 1

* 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