The RT9206 is a low cost, combo power controller, whichintegrates a synchronous step-down voltage-mode PWMand two HV linear controllers. Directly drive externalN-MOSFET makes it easy to implement a high efficiencyand cost attractive power solution. Voltage mode controlloop and constant operation frequency with externalcompensation network provide better stability in wideoperation range. Adjustable operation frequency up to600kHz can minimize the inductor size and PCB space. Itis particularly suitable in wide input voltage range (from4.75V to 28V) and multi-output applications.Linear controller features flexible linear power design.Delivered power can be simply decided by externalN-MOSFET selection. Output voltage level is chosen viaexternal resistor divider. The 0.8V internal reference cansatisfy most of the applications. Under voltage lockoutprovide cost effective protection of output.RT9206 provides complete safety protection function: softstart, over current protection, over voltage and under voltageprotection. Set current limit by choosing different MOSFET.Synchronous Buck control mode provides excellent overvoltage protection by turning on low side MOSFET toprevent any damage of end device from abnormal voltagestress as over voltage condition occurs.
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