LT®4363 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,从而允许负载持续运作。LT4363 还监视 SNS 和 OUT 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阻器两端的电压限制为 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。在定时器终止操作之前,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,则 MOSFET 将关断。在复位之前,LT4363-1 保持关断,而 LT4363-2 则在一个冷却周期之后重新起动。
两个高精度比较器能监视输入电源的过压 (OV) 和欠压 (UV) 情况。当电压低于 UV 门限时,外部 MOSFET 保持关断状态。假如输入电源电压高于 OV 门限,则不允许 MOSFET 重新接通。可以采用背对背 MOSFET 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。一个停机引脚负责将停机期间的静态电流减小至 7μA 以下。
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) * |
---|---|---|---|---|
LT4363CDE-1#PBF | 4x3 DFN-12 | C | $3.54 | $2.48 |
LT4363CDE-1#TRPBF | 4x3 DFN-12 | C | $2.54 | |
LT4363CDE-2#PBF | 4x3 DFN-12 | C | $3.54 | $2.48 |
LT4363CDE-2#TRPBF | 4x3 DFN-12 | C | $2.54 | |
LT4363CMS-1#PBF | MS-12 | C | $3.54 | $2.48 |
LT4363CMS-1#TRPBF | MS-12 | C | $2.54 | |
LT4363CMS-2#PBF | MS-12 | C | $3.54 | $2.48 |
LT4363CMS-2#TRPBF | MS-12 | C | $2.54 | |
LT4363CS-1#PBF | SO-16 | C | $3.54 | $2.48 |
LT4363CS-1#TRPBF | SO-16 | C | $2.54 | |
LT4363CS-2#PBF | SO-16 | C | $3.54 | $2.48 |
LT4363CS-2#TRPBF | SO-16 | C | $2.54 | |
LT4363HDE-1#PBF | 4x3 DFN-12 | H | $4.49 | $3.14 |
LT4363HDE-1#TRPBF | 4x3 DFN-12 | H | $3.20 | |
LT4363HDE-2#PBF | 4x3 DFN-12 | H | $4.49 | $3.14 |
LT4363HDE-2#TRPBF | 4x3 DFN-12 | H | $3.20 | |
LT4363HMS-1#PBF | MS-12 | H | $4.49 | $3.14 |
LT4363HMS-1#TRPBF | MS-12 | H | $3.20 | |
LT4363HMS-2#PBF | MS-12 | H | $4.49 | $3.14 |
LT4363HMS-2#TRPBF | MS-12 | H | $3.20 | |
LT4363HS-1#PBF | SO-16 | H | $4.49 | $3.14 |
LT4363HS-1#TRPBF | SO-16 | H | $3.20 | |
LT4363HS-2#PBF | SO-16 | H | $4.49 | $3.14 |
LT4363HS-2#TRPBF | SO-16 | H | $3.20 | |
LT4363IDE-1#PBF | 4x3 DFN-12 | I | $4.07 | $2.85 |
LT4363IDE-1#TRPBF | 4x3 DFN-12 | I | $2.91 | |
LT4363IDE-2#PBF | 4x3 DFN-12 | I | $4.07 | $2.85 |
LT4363IDE-2#TRPBF | 4x3 DFN-12 | I | $2.91 | |
LT4363IMS-1#PBF | MS-12 | I | $4.07 | $2.85 |
LT4363IMS-1#TRPBF | MS-12 | I | $2.91 | |
LT4363IMS-2#PBF | MS-12 | I | $4.07 | $2.85 |
LT4363IMS-2#TRPBF | MS-12 | I | $2.91 | |
LT4363IS-1#PBF | SO-16 | I | $4.07 | $2.85 |
LT4363IS-1#TRPBF | SO-16 | I | $2.91 | |
LT4363IS-2#PBF | SO-16 | I | $4.07 | $2.85 |
LT4363IS-2#TRPBF | SO-16 | I | $2.91 | |
LT4363MPMS-1#PBF | MS-12 | MP | $10.63 | $7.44 |
LT4363MPMS-1#TRPBF | MS-12 | MP | $7.50 | |
LT4363MPMS-2#PBF | MS-12 | MP | $10.63 | $7.44 |
LT4363MPMS-2#TRPBF | MS-12 | MP | $7.50 | |
LT4363MPS-1#PBF | SO-16 | MP | $10.63 | $7.44 |
LT4363MPS-1#TRPBF | SO-16 | MP | $7.50 | |
LT4363MPS-2#PBF | SO-16 | MP | $10.63 | $7.44 |
LT4363MPS-2#TRPBF | SO-16 | MP | $7.50 |
器件型号 | 描述 | 价格 |
---|---|---|
DC1935A-A | LT4363-1 Demo Board: High Voltage Surge Stopper with Current Limit, Latch-Off Version | $75.00 |
DC1935A-B | LT4363-2 Demo Board: High Voltage Surge Stopper with Current Limit, Auto-Retry Version | $75.00 |
DC2062A-A | LT4363IDE-1 Demo Board: 12V System ISO-7637-2 Surge Stopper, Latch-Off Version | $75.00 |
DC2062A-B | LT4363IDE-2 Demo Board: 12V System ISO-7637-2 Surge Stopper, Auto-Retry Version | $75.00 |
DC2150A-C | 28V, 5A MIL-STD-1275D Surge Stopper [Featuring LTC4366HTS8-2 and LT4363HS-2] | $150.00 |
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