厂商：Freescale
类别：16位单片机
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Littelfuse
类别：晶闸管
厂商：Linear
类别：线性稳压器（LDO ）
厂商：Murata
类别：热敏电阻
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特点1.5A Switch in a Small MSOP-8 PackageConstant 1.25MHz Switching FrequencyHigh Power Exposed Pad (MS8E) PackageWide Operating Voltage Range: 3V to 25VHigh Efficiency 0.22 Ohm Switch1.2V Feedback Reference VoltageFixed Output Voltages of 1.8V, 2.5V, 3.3V, 5V2% Overall Output ToleranceUses Low Profile Surface Mount ComponentsLow Shutdown Current: 6μASynchronizable to 2MHzCurrent Mode Loop ControlConstant Maximum Switch Current Rating at All Duty Cycles*典型应用典型应用描述The LT?1767 is a 1.25MHz monolithic buck switching regulator. A high efficiency 1.5A, 0.22 Ohm switch is included on the die together with all the control circuitry required to complete a high frequency, current mode switching regulator. Current mode control provides fast transient response and excellent loop stability.New design techniques achieve high efficiency at high switching frequencies over a wide operating range. A low dropout internal regulator maintains consistent performance over a wide range of inputs from 24V systems to Li-Ion batteries. An operating supply current of 1mA improves efficiency, especially at lower output currents. Shutdown reduces quiescent current to 6μA. Maximum switch current remains constant at all duty cycles. Synchronization allows an external logic level signal to increase the internal oscillator from 1.4MHz to 2MHz.The LT1767 is available in an 8-pin MSOP fused leadframe package and a low thermal resistance exposed pad package. Full cycle-by-cycle short-circuit protection and thermal shutdown are provided. High frequency operation allows the reduction of input and output filtering components and permits the use of chip inductors.