Description

KTS1655 is a low-resistance, high-current load switch with soft-start, over-voltage protection, reverse current blocking, over-current protection, short-circuit protection, and over-temperature protection. It is optimized to protect systems with USB Type-C PD ports and barrel connectors that sink up to 140W at 20V and must withstand up to 29V on VBUS.

KTS1655A/B has an automatic reverse-current blocking feature which acts as an “ideal diode” and isolates VBUS when charging or powering the system via another port. KTS1655C/D supports bi-directional mode during operation. Soft-start limits inrush current when turning on with large capacitors at the output. An ACOK flag indicates when power is good.

KTS1655 is packaged in an advanced, fully “green” compliant, 2.485 x 2.228mm, 20-bump Wafer-Level Chip-Scale Package (WLCSP).

Features

  • 3V to 24V Operating Voltage Range
  • 29V Abs. Max. Rating at VBUS and VSYS
  • 7A Continuous Current Rating
    • 18A Pulse Current Rating (duration PD limited)
  • 14mΩ typ. On-Resistance from VBUS to VSYS
  • Soft-Start (SS) Limits Inrush Current
  • Over-Voltage Protection (OVP) at VBUS
    • 24V Internally Fixed
    • 4V to 24V External Resistor Programmable
  • “Ideal Diode” Reverse Current Protection (RCP) for KTS1655A/B only
    • 15mV Forward Voltage and 15µs Fast Recovery
  • Bi-directional Mode when enabled for KTS1655C/D only
  • Over-Current Protection (OCP) at VBUS & VSYS
  • Short-Circuit Protection (SCP)
  • Over-Temperature Protection (OTP)
  • Auto-Retry after All Faults
  • EN or EN Enable Logic Input Versions
  • Support 1.2V GPIO Voltage
  • ACOK Open-Drain Power Good Flag
  • -40°C to 85°C Operating Temperature Range
  • 20-bump WLCSP 2.485 x 2.228mm (0.5mm pitch)

Applications

  • Desktop, Notebooks, Netbooks, Ultra-Books, Tablets
  • Docking Stations, Monitors, Accessories

Packaging Information

Package Dimensions Bumps Package Code
WLCSP 2.485mm x 2.228mm x 0.555mm 20 WLCSP

Technical Documentation

Description Documents Type
DatasheetKTS1655-04aPDF
Package Outline DrawingWLCSP54-20 IAE PODPDF

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