7ARMS VBUS ISINK or ISOURCE Load Switch for 48V EPR Systems

Description

The KTS1800 is a USB VBUS safety management load switch for up to 336W ISINK or 240W ISOURCE in 48V EPR systems. The operating range is 3V to 55V with input/output withstand up to 59VDC. Ultra-fast over-voltage protection (OVP) is internally set to 55V, but optionally adjusted via external resistors. Low on-resistance minimizes heat and voltage droop. Reverse-current protection (RCP) in both sink/source acts as a 20mV “ideal diode” with fast recovery. Additional safety management includes short-circuit protection (SCP) during and after soft-start, ultra-fast over-current protection (OCP), programmable current-limit protection (CLP), over-temperature protection (OTP), and an integrated transient voltage suppressor (TVS) for IEC industry standard ±30kV ESD and ±130V surge ratings. Safe POK LDO and VBUS active-discharge circuits are also integrated. The KTS1800 is packaged in advanced, fully “green” compliant, 4.81mm x 3.79mm, 63-bump Wafer-Level Chip-Scale Package (WLCSP).

Features

  • 3V to 55V Operating Voltage Range
  • 59VDC Abs. Max. Rating at VBUS and VSYS
  • 7ARMS Continuous Current Rating
  • 25mΩ typ. On-Resistance from VBUS to VSYS
  • 55V, 90ns Over-Voltage Protection (OVP)
    • 4V to 55V External Resistor Programmable
  • Active Transient Voltage Suppression (TVS) at VBUS
    • 48VDC ±130V Surge Protection (IEC61000-4-5)
    • ±30kV ESD Contact Discharge (IEC61000-4-2)
    • ±30kV ESD Air-Gap Discharge (IEC61000-4-2)
  • Soft-Start (SS) Limits Inrush Current
  • Short-Circuit Protection (SCP) during & after SS
  • 21A, 500ns Over-Current Protection (OCP)
  • Current-Limit Protection (CLP) in ISOURCE Mode
    • Resistor Adjustable from 0.6 to 5.5A
  • “Ideal Diode” Reverse-Current Protection (RCP)
    • VF = 20mV and 30µs Fast Recovery
    • Diode Direction aligns per ISINK vs. ISOURCE Mode
  • Over-Temperature Protection (OTP)
  • 3.3V POK Safe LDO
  • VBUS Active Discharge Circuit
  • FON Logic Input for Fast Role Swap (FRS)
  • A/B/C Suffix Versions for EN1/2 ISINK or ISOURCE Logic
  • FLT Output Flag & Hiccup Auto-Retry after Faults
  • -40°C to 85°C Operating Temperature Range
  • 63-bump WLCSP 4.81 x 3.79mm (0.5mm pitch)

Applications

  • Workstation & Gaming Notebooks/PCs
  • Charger-per-Port Systems
  • Monitors, Docking Stations, Conferencing Systems
  • Tools, E-Bikes, Battery Power Stations, etc.

Packaging Information

Package Dimensions Package Code
WLCSP97-63 4.810mm x 3.790mm x 0.555mm NAB

Technical Documentation

Description Documents Type
DatasheetKTS1800-04dPDF
Package Outline DrawingWLCSP97-63 NAB PODPDF

Purchase

Purchase Options
Buy from Digi-Key
Buy from Mouser