The AX3007A series are monolithic IC designed for a step-down DC/DC converter, and own the ability of driving a 2A load without additional transistor. It saves board space. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control having good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. If current limit function occurs and VFB is down below 0.5V, the switching frequency will be reduced.   The AX3007A series operates at a switching frequency of 85KHz thus allow smaller sized filter components than what would be needed with lower frequency switching regulators. The output version included fixed 3.3V, 5V, 12V, and an adjustable type. The chips are available in standard SOP8, SOP8-EP and TO252-5L packages.


    Package Type SOP8,SOP8-EP
    Input Voltage (Max) 40V
    Output Current 2A
    Output Voltage 12V,5V,3.3V,Adj(Vfb=1.23V)
    Frequency 85KHz
    Shutdown Current 100uA
    12 to 5V Efficiency(%) 82(2A)
    12 to 3.3V Efficiency(%) 78(2A)
    Availability NOW