LT®4356 浪涌抑制器可保护负载免遭高压瞬变的损坏。它能够通过控制一个外部 N 沟道 MOSFET 的栅极以在过压过程中 (比如:汽车应用中的负载突降情况) 调节输出。输出被限制在一个安全的数值上,从而允许负载继续运作。LT4356-1 还监视 VCC 和 SNS 引脚之间的压降,以防止遭受过流故障的影响。一个内部放大器用于把电流检测电压限制为 50mV。不管在哪一种故障条件下,定时器的起动均与 MOSFET 应力成反比。如果定时器操作终止,则 FLT 引脚将被拉至低电平,以发出 “即将断电” 的警告。如果该条件一直持续,MOSFET 将关断。在经过一个冷却周期之后,GATE 引脚将被拉至高电平,从而再次接通 MOSFET。
备用放大器可以用作电压检测比较器或线性稳压控制器,以驱动一个外部 PNP 传输晶体管。
可以采用背对背 FET 来代替肖特基二极管以提供反向输入保护,从而减少压降和功率损失。对于 LT4356-1,一个停机引脚将其停机期间的静态电流减小至 7uA 以下。而 LT4356-2 则与 LT4356-1 的做法不同,它在停机期间将静态电流减小至 60uA,并使辅助放大器处于运行状态,以供诸如欠压闭锁功能电路或始终保持接通的稳压器之用。
产品特点 Features
参数 |
应用
典型应用图 |
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) * |
LT4356CDE-1 | DFN | 12 | C | $2.83 | $1.98 |
LT4356CDE-1#PBF | DFN | 12 | C | $2.83 | $1.98 |
LT4356CDE-1#TRPBF | DFN | 12 | C | $2.08 | |
LT4356CDE-2 | DFN | 12 | C | $2.83 | $1.98 |
LT4356CDE-2#PBF | DFN | 12 | C | $2.83 | $1.98 |
LT4356CDE-2#TRPBF | DFN | 12 | C | $2.08 | |
LT4356CDE-3#PBF | DFN | 12 | C | $2.83 | $1.98 |
LT4356CDE-3#TRPBF | DFN | 12 | C | $2.04 | |
LT4356CMS-1 | MSOP | 10 | C | $2.83 | $1.98 |
LT4356CMS-1#PBF | MSOP | 10 | C | $2.83 | $1.98 |
LT4356CMS-1#TRPBF | MSOP | 10 | C | $2.04 | |
LT4356CMS-3#PBF | MSOP | 10 | C | $2.83 | $1.98 |
LT4356CMS-3#TRPBF | MSOP | 10 | C | $2.04 | |
LT4356CS-1#PBF | SO | 16 | C | $2.83 | $1.98 |
LT4356CS-1#TRPBF | SO | 16 | C | $2.04 | |
LT4356CS-2#PBF | SO | 16 | C | $2.83 | $1.98 |
LT4356CS-2#TRPBF | SO | 16 | C | $2.04 | |
LT4356CS-3#PBF | SO | 16 | C | $2.83 | $1.98 |
LT4356CS-3#TRPBF | SO | 16 | C | $2.04 | |
LT4356HDE-1 | DFN | 12 | H | $3.70 | $2.59 |
LT4356HDE-1#PBF | DFN | 12 | H | $3.70 | $2.59 |
LT4356HDE-1#TRPBF | DFN | 12 | H | $2.69 | |
LT4356HDE-2 | DFN | 12 | H | $3.70 | $2.59 |
LT4356HDE-2#PBF | DFN | 12 | H | $3.70 | $2.59 |
LT4356HDE-2#TRPBF | DFN | 12 | H | $2.69 | |
LT4356HDE-3 | DFN | 12 | H | $3.70 | $2.59 |
LT4356HDE-3#PBF | DFN | 12 | H | $3.70 | $2.59 |
LT4356HDE-3#TRPBF | DFN | 12 | H | $2.65 | |
LT4356HMS-1 | MSOP | 10 | H | $3.70 | $2.59 |
LT4356HMS-1#PBF | MSOP | 10 | H | $3.70 | $2.59 |
LT4356HMS-1#TRPBF | MSOP | 10 | H | $2.65 | |
LT4356HMS-3 | MSOP | 10 | H | $3.70 | $2.59 |
LT4356HMS-3#PBF | MSOP | 10 | H | $3.70 | $2.59 |
LT4356HMS-3#TRPBF | MSOP | 10 | H | $2.65 | |
LT4356HS-1#PBF | SO | 16 | H | $3.70 | $2.59 |
LT4356HS-1#TRPBF | SO | 16 | H | $2.65 | |
LT4356HS-2#PBF | SO | 16 | H | $3.70 | $2.59 |
LT4356HS-2#TRPBF | SO | 16 | H | $2.65 | |
LT4356HS-3#PBF | SO | 16 | H | $3.70 | $2.59 |
LT4356HS-3#TRPBF | SO | 16 | H | $2.65 | |
LT4356IDE-1 | DFN | 12 | I | $3.39 | $2.38 |
LT4356IDE-1#PBF | DFN | 12 | I | $3.39 | $2.38 |
LT4356IDE-1#TRPBF | DFN | 12 | I | $2.48 | |
LT4356IDE-2 | DFN | 12 | I | $3.39 | $2.38 |
LT4356IDE-2#PBF | DFN | 12 | I | $3.39 | $2.38 |
LT4356IDE-2#TRPBF | DFN | 12 | I | $2.48 | |
LT4356IDE-3#PBF | DFN | 12 | I | $3.40 | $2.38 |
LT4356IDE-3#TRPBF | DFN | 12 | I | $2.44 | |
LT4356IMS-1 | MSOP | 10 | I | $3.39 | $2.38 |
LT4356IMS-1#PBF | MSOP | 10 | I | $3.39 | $2.38 |
LT4356IMS-1#TRPBF | MSOP | 10 | I | $2.44 | |
LT4356IMS-3#PBF | MSOP | 10 | I | $3.40 | $2.38 |
LT4356IMS-3#TRPBF | MSOP | 10 | I | $2.43 | |
LT4356IS-1#PBF | SO | 16 | I | $3.39 | $2.38 |
LT4356IS-1#TRPBF | SO | 16 | I | $2.44 | |
LT4356IS-2#PBF | SO | 16 | I | $3.40 | $2.38 |
LT4356IS-2#TRPBF | SO | 16 | I | $2.44 | |
LT4356IS-3#PBF | SO | 16 | I | $3.40 | $2.38 |
LT4356IS-3#TRPBF | SO | 16 | I | $2.44 | |
LT4356MPMS-1 | MSOP | 10 | MP | $8.49 | $5.94 |
LT4356MPMS-1#PBF | MSOP | 10 | MP | $8.49 | $5.94 |
LT4356MPMS-1#TR | MSOP | 10 | MP | $6.00 | |
LT4356MPMS-1#TRPBF | MSOP | 10 | MP | $6.00 | |
LT4356MPMS-3 | MSOP | 10 | MP | $8.49 | $5.94 |
LT4356MPMS-3#PBF | MSOP | 10 | MP | $8.49 | $5.94 |
LT4356MPMS-3#TR | MSOP | 10 | MP | $6.00 | |
LT4356MPMS-3#TRPBF | MSOP | 10 | MP | $6.00 | |
LT4356MPS-1 | SO | 16 | MP | $8.49 | $5.94 |
LT4356MPS-1#PBF | SO | 16 | MP | $8.49 | $5.94 |
LT4356MPS-1#TR | SO | 16 | MP | $6.00 | |
LT4356MPS-1#TRPBF | SO | 16 | MP | $6.00 | |
LT4356MPS-2 | SO | 16 | MP | $8.49 | $5.94 |
LT4356MPS-2#PBF | SO | 16 | MP | $8.49 | $5.94 |
LT4356MPS-2#TR | SO | 16 | MP | $6.00 | |
LT4356MPS-2#TRPBF | SO | 16 | MP | $6.00 | |
LT4356MPS-3 | SO | 16 | MP | $8.49 | $5.94 |
LT4356MPS-3#PBF | SO | 16 | MP | $8.49 | $5.94 |
LT4356MPS-3#TR | SO | 16 | MP | $6.00 | |
LT4356MPS-3#TRPBF | SO | 16 | MP | $6.00 |