RT9728C

® RT9728C 120mΩ, 1.3A Power Switch with Programmable Current Limit General Description The RT9728C is a cost effective, low voltage, single P-MOSFET high-side power switch IC for USB application with a programmable current limit feature. Low switch-on resistance (typ.120mΩ) and low supply current (typ. 120μA) are realized in this IC. The RT9728C offers a programmable current limit threshold between 75mA and 1.3A (typ.) via an external resistor. The ±10% current limit accuracy can be realized for all current limit settings. In addition, a flag output is available to indicate fault conditions to the local USB controller. Furthermore, the chip also integrates an embedded delay function to prevent mis-operation from happening due to high inrush current. The RT9728C is an ideal solution for USB power supply and can support flexible applications since it is functional for various current limit requirements. It is available in SOT-23-6 and WDFN-6L 2x2 packages. Ordering Information RT9728C Package Type E : SOT-23-6 QW : WDFN-6L 2x2 Lead Plating System G : Green (Halogen Free and Pb Free) H : Chip Enable High Note : Richtek products are :  RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.  Suitable for use in SnPb or Pb-free soldering processes. Features  ±10% Current Limit Accuracy @ 1.3A  Adjustable Current Limit : 75mA to 1.3A (typ.)  Meet USB Current Limiting Requirements  Operating Voltage Range : 2.5V to 5.5V  Reverse Input−Output Vol...