Description

The KTS1800 is a USB VBUS safety management load switch for up to 336W I_SINK or 240W I_SOURCE 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
• 59V_DC Abs. Max. Rating at VBUS and VSYS
• 7A_RMS 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
  • 48V_DC ±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 I_SOURCE Mode
  • Resistor Adjustable from 0.6 to 5.5A
• “Ideal Diode” Reverse-Current Protection (RCP)
  • V_F = 20mV and 30µs Fast Recovery
  • Diode Direction aligns per I_SINK vs. I_SOURCE 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 I_SINK or I_SOURCE 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

Technical Documentation

Purchase