The MIC94161/62/63/64/65 from Micrel, Inc. is a family of high-side load switches with low on resistance (14.5 m Ω) capable of delivering up to 3 A of continuous current in a small 1mm x 1.5 mm wafer level chip-scale package. These small devices feature true reverse current protection with a wide input voltage range of 1.7 V to 5.5V. This makes them ideally suited for low power or space-constrained applications such as smart phones, tablets, mobile computers, set top boxes, and solid state drives. The MIC9416x family is available in volume with 1,000 pricing starting at $0.29.
Other features of these devices include an active pull-down circuit (MIC94162/MIC94164) that discharges the output capacitors when the device is turned off, internal soft start function (MIC94161/MIC94164/MIC94165) that reduces in-rush input current and input over voltage protection (MIC94161). These devices are specified to operate from -40 ºC to +125 ºC.