LS2406ERQ23 Series - 28V, 6A eFuse with True Reverse Blocking and Fast Role Swap

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The LS2406ERQ23 is an advanced 28V 6A rated current limit switch which provides overload, short circuit, input voltage surge, excessive inrush current, over-temperature and reverse current protections to the system. The built-in 24mΩ ultra low RDS(ON)power switch helps in reducing power loss during normal operation. Current limit level can be set from 1A to 6A. with an external resistor. The LS2406ERQ23 integrates thermal fold-back function and over temperature shutdown protection. The LS2406ERQ23 has all time reverse current blocking function regardless of the enable signal EN logic states. A fast role swap function is also implemented to comply with the timing requirement defined in the USB Power Delivery Specification. The integrated input and output discharge function which allows the voltage levels at the input and output ports to be discharged to meet the requirement of the USB Power Delivery Specification. The LS2406ERQ23 is available in low profile 16 leads QFN 2.5mm x 3.2mm package.

Features & Benefits:

  • Wide Operation Voltage Range from 3V to 24V
  • 28V Maximum Input / output Voltage
  • Integrate a 24mΩ Ultra Low On Protection Switch
  • External Adjustable Current Limit 1A∼6Amp
  • External Adjustable Input Over- voltage Protection (OVP) Threshold
  • External Adjustable Soft-start (SS) Time
  • Support Fast Role Swap Function through a logic signal to bypass Soft-start Time
  • All Time True Reverse Current Blocking
  • Short-circuit Protection
  • Fault Indicator
  • Input and Output Discharge Function
  • Thermal Shutdown Protection and Auto Recovery
  • QFN2.5×3.2_16L Packages
  • Pb-Free and RoHS compliant
  • UL Recognized to the requirements of UL/CSA 62368-1


  • Notebook, Desktop
  • Tablet
  • Server
  • Docking Station
  • Networking
  • Industry
  • DC FAN
  • Storage (SSD / HDD)
  • Thunderbolt / USB Type-C PD

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Access specifications, certifications, check availability and order parts below

Catalog #Operation Voltage (V)Vmax (V)Continuous Current (A)Ron (mΩ)Over Current Protection (A)Over Voltage Protection (V)Over Temperature ProtectionReverse BlockingSoft StartOutput DischargeQuiescent Current (µA)Shut Down Current (µA)PackagePartner ECAD ModelsStockSamples
LS2406ERQ233 ~ 24286241 ~ 55 ~ 24YesYesAdjustableYes45010QFN2.5x3.2-16LS2406ERQ23CheckOrder
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