内置低导通电阻P沟道MOSFET功率开关IC,限定电流防止倒流功能

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产品概述 返回TOP

CXES4280系列产品是内置低导通电阻P沟道MOSFET的功率开关IC。作为保护功能，内置了限定电流功能,防止倒流功能 (防止VOUT→VIN的倒流),软启动功能,过热停机功能,防止低电压错误动作电路(UVLO)。此外，还搭载了监控功率开关状态的标志。标志端子为N沟道开漏输出，在检测过电流中及检测过热中,防止倒流功能动作中，输出低电平。进而，还搭载了限定电流可变功能，用外置电阻可以在0.075A～2.4A(TYP.)的范围内设定限定电流数值。根据在CE端子上印加的电压电平，可以使IC成待机状态。可以从有效H电平,有效L电平中选择CE端子输入逻辑。The CXES4280 series is a P-channel MOSFET power switch IC with a low ON resistance. A current limit, reverse current prevention (prevents reverse current from VOUT to VIN), soft start, thermal shutdown, and an under voltage lockout (UVLO) are incorporated as protective functions. A flag function monitors the power switch status. The flag output has N-channel open drain structure, and outputs Low level signal while over-current or overheating is detected, or while the reverse current prevention is operated. A variable current limiting function is integrated, allowing the current limit value to be set, using an external resistor. The voltage level which is fed to CE pin determines the status of CXES4280. The logic level of CE pin is selectable between either one of active high or active low.

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应用范围 返回TOP

●Set Top Boxes

●Digital TVs

●PCs

●USB Ports/USB Hubs

●HDMI