LT3645EMSE#PBF , Linear And Switching Voltage Regulator IC 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 750kHz 12-TSSOP (0.118", 3.00mm Width) Exposed Pad. we specialize in Linear Technology LT3645EMSE#PBF electronic components. LT3645EMSE#PBF can be shipped within 24 hours after order.