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ZK3401替代AO3401 这是一个控制电源通断的电路。AO3401是增强型PMOS,简单来说,当Vgs(即Q7的1-2间电压)有一个负压时,Q7就会导通,对于AO3401来讲,完全开通电压大约为-10V,但-3.3V也可以基本导通,只是阻抗略大(大约100毫欧),具体不同Vgs电压下导通阻抗可以查阅AO3401手册。 30V P-Channel Enhancement ModeMOSFET ZK3401 Rve1.0 Description The ZK3401 uses advanced trench technology to provide excellent RDS(ON), This device is suitable for use as a load switch or in PWM applications. General Features VDS = -30V,ID = -4.2A RDS(ON) < 55mΩ @ VGS=-10V RDS(ON) < 75mΩ @ VGS=-4.5V Application Battery protection Load switch Uninterruptible power supply Package Marking and Ordering Information Product ID Pack Marking Qty(PCS) ZK3401 SOT23 A19T 3000 Absolute Maximum Ratings (TA=25℃unless otherwise noted) Parameter Symbol Limit Unit Drain-Source Voltage VDS -30 V Gate-Source Voltage VGS ±12 V Drain Current-Continuous ID -4.2 A Drain Current-Pulsed (Note 1) IDM -30 A Maximum Power Dissipation PD 1.2 W Operating Junction and Storage Temperature Range TJ,TSTG -55 To 150 ℃ Thermal Resistance,Junction-to-Ambient (Note 2) RθJA 104 ℃/W