5ARMS 28V VBUS Current-Sink Protection Load Switch


  • 3V to 32V Operating Voltage Range
  • 35V Abs. Max. Rating at IN and OUT
  • 5A Continuous Current Rating
    • 10A Pulse Current Rating (duration Pd limited)
  • 25mΩ typ. On-Resistance from IN to OUT
  • Soft-Start (SS) Limits Inrush Current
  • Over-Voltage Protection (OVP) at IN
    • 33V Internally Fixed
    • 4V to 23V External Resistor Programmable for USB PD 3.1 PPS in SPR mode
    • 15V to 31V External Resistor Programmable for USB PD 3.1 AVS in EPR mode
  • “Ideal Diode” Reverse-Current Protection (RCP)
    • RCP Fast Recovery without ACOK Indication
  • Supports 140W USB Power Delivery (USB PD) Revision 3.1 specification
  • Short-Circuit Protection (SCP) at OUT
  • Over-Current Protection (OCP)
  • Over-Temperature Protection (OTP)
  • Transient Voltage Suppression (TVS) at IN
    • ±100V Surge Protection (IEC61000-4-5)
    • ±8kV ESD Contact Discharge (IEC61000-4-2)
    • ±15kV ESD Air Gap Discharge (IEC61000-4-2)
  • EN (KTS1898A) or EN (KTS1898B) Enable Logic
  • Auto-Retry after All Faults
  • ACOK Open-Drain Output Flag
  • -40°C to 85°C Operating Temperature Range
  • 25-bump WLCSP 2.560mm x 2.560mm (0.500mm pitch)


  • Notebooks, Gaming PCs
  • Mini Desktop PCs, Docking Stations, Monitors

Key Electrical Specifications

Vin (Min) Vin (Max) Surge (V) RON (mΩ) IMAX (A) RBP RCP OCP OVP Adj. Package
3V 32V ±100 25 5.0 Yes Yes Yes 4V~31V WLCSP55-25
2.560mm x 2.560mm

Typical Application Diagram