KP311AWPA

KP311AWPA is an offline PWM power switch from Kiwi Instruments that integrates a 500V power MOSFET with the controller in an ASOP-7 package, configured for a default 5V output. It accepts a wide 85 to 265Vac input range and delivers up to 100mA, covering the auxiliary and standby rails that small appliances, meters, chargers and control boards need before their main converter starts. Integrating the high-voltage MOSFET removes a separate power device and its drive circuitry from the bill of materials, which shrinks the power section, simplifies layout around the mains input and lowers assembly cost on high-volume products. The ordering information in the Kiwi datasheet lists KP311AWPA in tape and reel at 5000 pieces per reel, which suits reel-fed SMT production. Selection and sourcing advice: budget the load against the 100mA maximum with margin for start-up and temperature, check that a fixed 5V rail matches the circuitry the auxiliary supply feeds, and confirm the ASOP-7 footprint against your PCB land pattern before release. Quote the complete KP311AWPA code on your RFQ; similar KP311 family codes are different devices with different ratings and should not be substituted without a datasheet comparison. Parameters verified against Kiwi Instruments documentation.