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  • What is the operation of the output of high-side switch ICs when overcurrent is detected?
    • After overcurrent is detected the output switches to a current limited state and the restricted current is output. The output voltage at that time is calculated by 'Overcurrent Limit Value (Short-Circuit Output Current) x Load Resistance Component'. If this condition continues the chip temperature will increase and the thermal shutdown circuit will operate to switch OFF the output. Thermal shutdown is cancelled when the temperature decreases. For the following latch-type models, after overcurrent detection the outgoes to a current-limited state and limited current is output. If this condition continues and the time specified by the /OC output delay time comes, the latch turns OFF and no current is output.

      Target Models: BD6538G, BD2220G, BD2221G, BD6538G-LB, BD2220G-LB, BD2221G-LB

  • For high-side and low-side switch ICs, when a higher voltage is supplied to the OUT side than the IN side when the switch is OFF, will there be problems (i.e. backflow)?
    • Backflow models:

      BD6538G、 BD2224G、 BD2225G、 BD2226G、 BD2227G、 BD2232G、 BD2233G、 BD6538G-LB、 BD2224G-LB、 BD2225G-LB、 BD2226G-LB、 BD2227G-LB、 BD2268G-M、 BD2269G-M、 BD82001FVJ、 BD82000FVJ、 BD82001FVJ-LB、 BD82000FVJ-LB、 BD82004FVJ-M、 BD82005FVJ-M、 BD2200GUL、 BD2201GUL、 BD2202G、 BD2206G、 BD6520F、 BD2202G-LB、 BD2206G-LB、 BUS1DJC0GWZ、 BUS1DJC3GWZ

      . With backflow models, if a higher voltage is supplied to OUT vs IN when the switch is OFF (EN=OFF), current may flow (i.e. through a parasitic diode), which can lead to deterioration and breakdown. If applying a higher voltage to OUT than IN, please use a model that can prevent backflow. Applicable models are described as providing 'reverse current protection while the switch is OFF' in the datasheet.
      Related Link:Technical Document
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