上电时,MAX5946保持所有外部MOSFET关闭,直到电源升至超出各自的欠压锁定(UVLO)门限。该器件同样保持内部MOSFET关断,直到辅助输入电源升至其UVLO门限以上。接到导通命令时,为了限制电源浪涌电流,MAX5946以恒定的栅极电流缓慢开启外部与内部MOSFET。MAX5946一直主动限制所有输出电流,若过流条件持续时间超过可编程过流超时,则器件关断输出。若管芯温度超过+150°C,则热保护电路也会关断所有输出。发生过流或超温故障条件后,MAX5946L发生闭锁,而MAX5946A在重启时间延时后自动重新启动。该器件采用36引脚(6mm x 6mm)薄型QFN封装,工作在-40°C至+85°C温度范围。
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
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and delivery, please see the price and availability page
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