12V Hot-Plug Switch

Integrated, Self-Protected Electronic Switch Allows the Safe Insertion and Removal of Equipment Into 12V Backplanes

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The DS4560 is a self-contained hot-plug switch intended to be used on +12V power buses to limit through current and to control the power-up output-voltage ramp. The device contains an on-board 25mΩ n-channel power MOSFET that is actively closed-loop controlled to ensure that an adjustable current limit is not exceeded. The maximum allowable current through the device is determined by an external resistor connected to the ILIM pin.

The DS4560 also contains the ability to control the power-up output-voltage ramp. A capacitor connected to the VRAMP pin sets the desired voltage ramp rate. The output voltage is unconditionally clamped to keep input overvoltage stresses from harming the load. The DS4560 also contains an adjustable power-up timer. A capacitor connected to the TIMER pin determines how long after power-on reset the DS4560 should wait before starting to apply power to the load. The TIMER pin can also be driven with a digital logic output to create a device-enable function.

The DS4560 contains an on-board temperature sensor with hysteresis. If operating conditions cause the device to exceed an internal thermal limit, the DS4560 either unconditionally shuts down and latches off awaiting a power-on reset (DS4560S-LO), or it waits until the device has cooled by the hysteresis amount and then restarts (DS4560S-AR).
DS4560: Typical Application Circuit DS4560: Typical Application Circuit Enlarge+

Key Features

  • On-Board 25mΩ Power MOSFET
  • Adjustable Short-Circuit Current and Overload Current Limit
  • Adjustable Output-Voltage Slew Rate
  • Adjustable Power-Up Timer with External Enable Capability
  • Output Overvoltage Limiting
  • On-Board Thermal Protection
  • On-Board Charge Pump
  • Latchoff and Autoretry Versions Available
  • 9.0V to 13.2V Supply Operation
  • 8-Pin SO (150 mils) Pb-Free Package
  • UL Certification Record E211395


  • Base Stations
  • InfiniBand™
  • PCI/PCI Express®
  • RAID/Hard Drives
  • Servers/Routers
Part NumberVIN
Circuit Breaker/ Current LimitFault Condition ControlChannelsPositive/Negative RailFeaturesPackage/PinsBudgetary
minmaxSee Notes
DS4560 913.2Current Limit
Latched Off
Periodic Retry
Integrated MOSFET
Undervoltage/Overvoltage Protection
SOIC (N)/8
$1.20 @1k
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

App Note 4883 Oscilloscope Math Functions Aid Hot-Swap Circuit Analysis

Quality and Environmental Data

Product Reliability Reports: DS4560.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


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