RT9705A

Preliminary RT9705A 80mΩ, 1A Power Multiplexer General Description The RT9705A is a dual input single output power multiplexer specifically designed to provide seamless voltage transition between two independent power suppliers. Equipped with two low RDS(ON) N-Channel MOSFETs driven by internal charge pump circuitry, the RT9705A is able to deliver 1A output current with only 80mV voltage drop. Manual or auto switching mode is easily selected by two digital inputs D1 and D0. When both D0 and D1 are selected high, the RT9705A enters shutdown mode and consumes minimum power making it ideal suitable for battery powered equipments. A STAT pin with open drain output is provided to indicate the switch status. A user-programmable up to 1.25A current limit function is available for maximum safety in various applications. The RT9705A provides comprehensive protection functions, including adjustable current limit, over temperature protection, soft start function for minimum inrush current, cross-conduction protection, and reverse conduction protection. These features greatly simplify power multiplexer design. The RT9705A is available in TSSOP-8 package requiring minimum board area and smallest components. Ordering Information RT9705A Package Type C : TSSOP-8 Operating Temperature Range P : Pb Free with Commercial Standard Note : RichTek Pb-free products are : `RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. `Suitable for use in SnPb or Pb-free...