Micrel – MIC94161/62/63/64/65: Miniature High Side Load Switches with Reverse Blocking

The MIC94161/62/63/64/65 is a family of high side load switches with low on-resistance (14.5mΩ) capable of delivering up to 3A of continuous current in a small 1 x 1.5mm wafer level chip-scale package. These small devices feature true reverse current protection with a wide input voltage range of 1.7V to 5.5V. 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)


  • 14.5mΩ RDS(ON)
  • 3A continuous operating current
  • Internal level shift for CMOS/TTL control logic
  • Micropower shutdown current
  • Load discharge circuit: MIC94162/4
  • Ultra-fast turn-off time
  • 1.7V to 5.5V input voltage range
  • Reverse current flow blocking (no “body diode”)
  • Ultra-low quiescent current
  • Soft start: MIC94161/4/5 (2.7ms)
  • -40°C to +125°C junction temperature
  • 1k MSRP: starting at $0.29 US