Description

The KTS1661 is a low-resistance load switch with adjustable current limit, soft-start, and “ideal diode” reverse current protection. It is optimized to protect systems with USB type-C ports that source up to 15W at 5V and must withstand up to 29V on VBUS. The KTS1661 uses an external resistor to set the current limit from 500mA to 2.5A. Soft-start limits inrush current and automatic “ideal diode” reverse current protection (RCP) isolates the system’s internal rail whenever VBUS is driven to a higher voltage, as when charging. A FLT flag indicates an over-current or over-temperature fault condition. The KTS1661 is available in advanced, fully “green” compliant, 1.31 x 1.31mm, 9-bump Wafer-Level Chip-Scale Package (WLCSP).

Features

  • 2.5V to 5.5V Supply Voltage Range at IN
  • 29V Abs. Max. Rating at OUT
  • 53mΩ typ. On-Resistance from IN to OUT
  • Adjustable Current Limit Protection (CLP)
    • 500mA to 2.5A via RISET
  • Over-Current Protection (OCP)
  • Short-Circuit Protection (SCP)
  • “Ideal Diode” Reverse Current Protection (RCP)
  • Over Temperature Protection (OTP)
  • Soft-Start (SS) Limits Inrush Current
  • Open-Drain FLT Flag
  • -40°C to 85°C Operating Temperature Range
  • RoHS and Green Compliant
  • 9-bump WLCSP 1.31 x 1.31mm (0.4mm pitch)
  • Pin-to-Pin with KTS1665 & KTS1688 & FPF2495

Applications

  • Smartphones, Tablets, Gaming Consoles
  • Notebooks, Ultra-Books, Desktop PCs
  • Set-Top Box, Networking, any USB ISOURCE Port

Packaging Information

Package Dimensions Bumps Package Code
WLCSP33-9 1.31mm x 1.31mm x 0.555mm 9 WLCSP

Technical Documentation

Description Documents Type
DatasheetKTS1661-04aPDF
Package Outline DrawingWLCSP33-9 CAC PODPDF

Purchase

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