LT3507AHFE#PBF , Linear And Switching Voltage Regulator IC 4 Output Step-Down (Buck) (3), Linear (LDO) (1) 900kHz ~ 1.1MHz 38-TFSOP (0.173", 4.40mm Width) Exposed Pad. we specialize in Linear Technology LT3507AHFE#PBF electronic components. LT3507AHFE#PBF can be shipped within 24 hours after order.