LTC4251B SOT-23 封装的负电压热插拔控制器
LTC®4251B / LTC4251B-1 / LTC4251B-2 负电压热插拔 (Hot SwapTM) 控制器允许在带电背板上安全地进行电路板的插拔操作。输出电流由 3 个电流限制级来控制：一个定时电路断路器、有源电流限制和一条快速前馈通路 (用于限制最坏情况灾难性故障条件下的峰值电流)。
当输入电源超过了期望的工作范围时，可调欠压和过压检测器将负载断接。对电源输入进行并联调节，因而在非常高的电源电压条件下实现了安全的运作。一个多功能定时器负责延迟初始启动并控制电路断路器的响应时间。
LTC4251B UV/OV 门限专为与 -43V 至 -75V 的标准电信工作范围相匹配而设计。LTC4251B-1 UV/OV 门限扩展了工作范围以涵盖 -36V 至 -72V。LTC4251B-2 只提供了一个 -43V 的 UV 门限。LTC4251B 改善了 LTC4251 并联稳压器的坚固性。
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LTC4251B 订购信息和价格参考Package Variations and Pricing
| 器件型号 | 封装 | 引脚 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
| LTC4251-1CS6 | SOT | 6 | C | $2.36 | |
| LTC4251-1CS6#PBF | SOT | 6 | C | $2.36 | |
| LTC4251-1CS6#TR | SOT | 6 | C | $2.36 | $2.01 |
| LTC4251-1CS6#TRM | SOT | 6 | C | $2.36 | $2.06 |
| LTC4251-1CS6#TRMPBF | SOT | 6 | C | $2.36 | $2.06 |
| LTC4251-1CS6#TRPBF | SOT | 6 | C | $2.36 | $2.01 |
| LTC4251-1IS6 | SOT | 6 | I | $2.66 | |
| LTC4251-1IS6#PBF | SOT | 6 | I | $2.66 | |
| LTC4251-1IS6#TR | SOT | 6 | I | $2.66 | $2.26 |
| LTC4251-1IS6#TRM | SOT | 6 | I | $2.66 | $2.31 |
| LTC4251-1IS6#TRMPBF | SOT | 6 | I | $2.66 | $2.31 |
| LTC4251-1IS6#TRPBF | SOT | 6 | I | $2.66 | $2.26 |
| LTC4251-1ISC6#PBF | SOT | 6 | I | $2.66 | |
| LTC4251-2CS6 | SOT | 6 | C | $2.36 | |
| LTC4251-2CS6#PBF | SOT | 6 | C | $2.36 | |
| LTC4251-2CS6#TR | SOT | 6 | C | $2.36 | $2.01 |
| LTC4251-2CS6#TRM | SOT | 6 | C | $2.36 | $2.06 |
| LTC4251-2CS6#TRMPBF | SOT | 6 | C | $2.36 | $2.06 |
| LTC4251-2CS6#TRPBF | SOT | 6 | C | $2.36 | $2.01 |
| LTC4251-2IS6 | SOT | 6 | I | $2.66 | |
| LTC4251-2IS6#PBF | SOT | 6 | I | $2.66 | |
| LTC4251-2IS6#TR | SOT | 6 | I | $2.66 | $2.26 |
| LTC4251-2IS6#TRM | SOT | 6 | I | $2.66 | $2.31 |
| LTC4251-2IS6#TRMPBF | SOT | 6 | I | $2.66 | $2.31 |
| LTC4251-2IS6#TRPBF | SOT | 6 | I | $2.66 | $2.26 |
| LTC4251-2ISC6#PBF | SOT | 6 | I | $2.66 | |
| LTC4251BCS6#PBF | SOT | 6 | C | $2.36 | |
| LTC4251BCS6#TRMPBF | SOT | 6 | C | $2.36 | $2.06 |
| LTC4251BCS6#TRPBF | SOT | 6 | C | $2.36 | $2.01 |
| LTC4251BCS6-1#PBF | SOT | 6 | C | $2.36 | |
| LTC4251BCS6-1#TRMPBF | SOT | 6 | C | $2.36 | $2.06 |
| LTC4251BCS6-1#TRPBF | SOT | 6 | C | $2.36 | $2.01 |
| LTC4251BCS6-2#PBF | SOT | 6 | C | $2.36 | |
| LTC4251BCS6-2#TRMPBF | SOT | 6 | C | $2.36 | $2.06 |
| LTC4251BCS6-2#TRPBF | SOT | 6 | C | $2.36 | $2.01 |
| LTC4251BIS6#PBF | SOT | 6 | I | $2.66 | |
| LTC4251BIS6#TRMPBF | SOT | 6 | I | $2.66 | $2.31 |
| LTC4251BIS6#TRPBF | SOT | 6 | I | $2.66 | $2.26 |
| LTC4251BIS6-1#PBF | SOT | 6 | I | $2.66 | |
| LTC4251BIS6-1#TRMPBF | SOT | 6 | I | $2.66 | $2.31 |
| LTC4251BIS6-1#TRPBF | SOT | 6 | I | $2.66 | $2.26 |
| LTC4251BIS6-2#PBF | SOT | 6 | I | $2.66 | |
| LTC4251BIS6-2#TRMPBF | SOT | 6 | I | $2.66 | $2.31 |
| LTC4251BIS6-2#TRPBF | SOT | 6 | I | $2.66 | $2.26 |
| LTC4251CS6 | SOT | 6 | C | $2.36 | |
| LTC4251CS6#PBF | SOT | 6 | C | $2.36 | |
| LTC4251CS6#TR | SOT | 6 | C | $2.36 | $2.01 |
| LTC4251CS6#TRM | SOT | 6 | C | $2.36 | $2.06 |
| LTC4251CS6#TRMPBF | SOT | 6 | C | $2.36 | $2.06 |
| LTC4251CS6#TRPBF | SOT | 6 | C | $2.36 | $2.01 |
| LTC4251IS6 | SOT | 6 | I | $2.66 | |
| LTC4251IS6#PBF | SOT | 6 | I | $2.66 | |
| LTC4251IS6#TR | SOT | 6 | I | $2.66 | $2.26 |
| LTC4251IS6#TRM | SOT | 6 | I | $2.66 | $2.31 |
| LTC4251IS6#TRMPBF | SOT | 6 | I | $2.66 | $2.31 |
| LTC4251IS6#TRPBF | SOT | 6 | I | $2.66 | $2.26 |
LTC4251B 数据手册及相关资料下载
- 数据手册(英文) : LTC4251B/LTC4251B-1/ LTC4251B-2 - Negative Voltage Hot Swap Controllers in SOT-23.PDF
- 可靠性数据 : R427 Reliability Data .PDF
- 产品选型卡 : High Voltage Hot Swap Controllers.PDF
