LTC®4227 通过控制外部 N 沟道 MOSFET 为两个电源轨提供了“理想二极管或”和热插拔 (Hot SwapTM) 功能。起理想二极管作用的 MOSFET 替代了两个高功率肖特基二极管及相关联的散热器,从而节省了功率和电路板面积。一个热插拔控制 MOSFET 通过限制浪涌电流而允许在带电背板上安全地进行电路板的插拔操作。另外,还利用快速动作电流限制和内部定时电路断路器对电源输出提供了针对短路故障的保护。
LTC4227 可调节 MOSFET 两端的正向压降,以确保实现从一个电源至另一个电源的无振荡平滑电流转移。理想二极管快速接通以减小电源切换期间的负载电压降。倘若输入电源发生故障或者短路,则快速关断能够最大限度地减小反向瞬态电流。
LTC4227 可提供接通 / 关断控制,并报告电源的故障及良好运行状态。
器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
---|---|---|---|---|
LTC4227CGN-1#PBF | SSOP-16 | C | $4.87 | $3.41 |
LTC4227CGN-1#TRPBF | SSOP-16 | C | $3.47 | |
LTC4227CGN-2#PBF | SSOP-16 | C | $4.87 | $3.41 |
LTC4227CGN-2#TRPBF | SSOP-16 | C | $3.47 | |
LTC4227CUFD-1#PBF | 4x5 QFN-20 | C | $4.87 | $3.41 |
LTC4227CUFD-1#TRPBF | 4x5 QFN-20 | C | $3.47 | |
LTC4227CUFD-2#PBF | 4x5 QFN-20 | C | $4.87 | $3.41 |
LTC4227CUFD-2#TRPBF | 4x5 QFN-20 | C | $3.47 | |
LTC4227CUFD-3#PBF | 4x5 QFN-20 | C | $4.87 | $3.41 |
LTC4227CUFD-3#TRPBF | 4x5 QFN-20 | C | $3.47 | |
LTC4227CUFD-4#PBF | 4x5 QFN-20 | C | $4.87 | $3.41 |
LTC4227CUFD-4#TRPBF | 4x5 QFN-20 | C | $3.47 | |
LTC4227IGN-1#PBF | SSOP-16 | I | $5.36 | $3.75 |
LTC4227IGN-1#TRPBF | SSOP-16 | I | $3.81 | |
LTC4227IGN-2#PBF | SSOP-16 | I | $5.36 | $3.75 |
LTC4227IGN-2#TRPBF | SSOP-16 | I | $3.81 | |
LTC4227IUFD-1#PBF | 4x5 QFN-20 | I | $5.36 | $3.75 |
LTC4227IUFD-1#TRPBF | 4x5 QFN-20 | I | $3.81 | |
LTC4227IUFD-2#PBF | 4x5 QFN-20 | I | $5.36 | $3.75 |
LTC4227IUFD-2#TRPBF | 4x5 QFN-20 | I | $3.81 | |
LTC4227IUFD-3#PBF | 4x5 QFN-20 | I | $5.36 | $3.75 |
LTC4227IUFD-3#TRPBF | 4x5 QFN-20 | I | $3.81 | |
LTC4227IUFD-4#PBF | 4x5 QFN-20 | I | $5.36 | $3.75 |
LTC4227IUFD-4#TRPBF | 4x5 QFN-20 | I | $3.81 |
器件型号 | 描述 | 价格 |
---|---|---|
DC1625A-A | LTC4227CUFD-1 Demo Board: Dual Ideal Diode & Single Hot Swap Controller with Fault Latch-Off and 100ms On Delay | $75.00 |
DC1625A-B | LTC4227CUFD-2 Demo Board: Dual Ideal Diode & Single Hot Swap Controller with Fault Auto-Retry and 100ms On Delay | $75.00 |
DC1625A-C | LTC4227CUFD-3 Demo Board: Dual Ideal Diode & Single Hot Swap Controller with Fault Latch-Off and 1.6ms On Delay | $75.00 |
DC1625A-D | LTC4227CUFD-4 Demo Board: Dual Ideal Diode & Single Hot Swap Controller with Fault Auto-Retry and 1.6ms On Delay | $75.00 |
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