RT9206 Datasheet | Richtek

Description The RT9206 is a low cost, bo power controller, which integrates a synchronous step-down voltage-mode PWM and two HV linear controllers. Directly drive external N-MOSFET makes it easy to implement a high efficiency and cost attractive power solution. Voltage mode control loop and constant operation frequency with external pensation network provide better stability in wide operation range. Adjustable operation frequency up to 600k Hz can minimize the inductor size and PCB space. It is particularly suitable in wide input voltage range (from 4.75V to 28V) and multi-output applications. Linear controller features flexible linear power design. Delivered power can be simply decided by external N-MOSFET selection. Output voltage level is chosen via external resistor divider. The 0.8V internal reference can satisfy most of the applications. Under voltage lockout provide cost effective protection of output. RT9206 provides plete safety protection function: soft start, over current protection, over voltage and under voltage protection. Set current limit by choosing different MOSFET. Synchronous Buck control mode provides excellent over voltage protection by turning on low side MOSFET to prevent any damage of end device from abnormal voltage stress as over voltage condition occurs. Features l l l l l l l l l l Wide Input Range (4.75V to 28V) 0.8V Internal Reference High Efficiency Synchronous Buck Topology Integrate two HV Linear Controllers Low cost N-MOSFET Design Duty Cycle from 0% to 90%. Adjustable switching frequency from 200k Hz to 600k Hz, Default 200k Hz Sense OCP by low Side MOSFET RDS(ON) Power Good Signal Output Ro HS pliant and 100% Lead (Pb)-Free Applications l l l l l LCD Monitor Desk Note IEEE1394 Client Desktop IA Broadband Pin Configurations (TOP VIEW) LDRV1 VDD LDRV2 LFB2 P FB PGOOD SS/EN 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 LFB1 BOOT UGATE PHS VINT LGATE GND RT Ordering Information RT9206 Package Type S : SOP-16 Operating Temperature Range P :...