厂商：Freescale
类别：16位单片机
厂商：
类别：瞬态抑制二极管
厂商：Syfer
类别：EMI/RFI抑制器及铁氧体
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Atmel
类别：AT90系列单片机
我要询价我要收藏
特点Allows Safe Board Insertion and Removal from a Live BackplaneControls Supply Voltage from 10.8V to 80VFoldback Current LimitingOvercurrent Fault DetectionDrives an External N-Channel MOSFETProgrammable Supply Voltage Power-Up RateUndervoltage ProtectionLatch Off Operation Mode (LT4256-1)Automatic Retry (LT4256-2) Available in an 8-Pin SO Package 典型应用典型应用描述The LT ? 4256-1/LT4256-2 are high voltage Hot Swap? controllers that allow a board to be safely inserted and removed from a live backplane. An internal driver drives an external N-channel MOSFET switch to control supply voltages ranging from 10.8V to 80V.The LT4256-1/LT4256-2 features an adjustable analog foldback current limit. If the supply remains in current limit for more than a programmable time, the N-channel MOSFET shuts off and the PWRGD output asserts low. The LT4256-2 automatically restarts after a time-out delay. The LT4256-1 latches off until the UV pin is cycled low.The PWRGD output indicates when the output voltage rises above a programmed level. An external resistor string from V CC provides programmable undervoltage protection.The LT4256 can be used as an upgrade to LT1641 designs. See Table 1 on page 14 for upgraded specifications.The LT4256-1 and LT4256-2 are available in an 8-pin SO package that is pin compatible with the LT1641.?