FPF2165R − Full Function Load Switch with Adjustable Current Limit


The FPF2165R is a load switch that provides full protection to systems and loads which may encounter large current conditions. These devices contain a 0.12Ω current-limited Pchannel MOSFET which can operate over an input voltage range of 1.8-5.5V. Internally, current is prevented from flowing when the MOSFET is off and the output voltage is higher than the input voltage. Switch control is by a logic input (ON) capable of interfacing directly with low voltage control signals. Each part contains thermal shutdown protection which shuts off the switch to prevent damage to the part when a continuous over-current condition causes excessive heating.

When the switch current reaches the current limit, the parts operate in a constant-current mode to prohibit excessive currents from causing damage. The FPF2165R will not turn off after a current limit fault, but will rather remain in the constant current mode indefinitely. The minimum current limit is 150mA.

These parts are available in a space-saving 6 pin 2X2 MLP package.

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Product Status/Pricing/Packaging

Product Product & Eco Status *Pricing Packaging & Packing Info **Package Marking Convention Qualification Support Compliance Certificates
0 FPF2165R Full Production
Green as of May 2009
$0.4  Details
0.8 x 2 x 2mm

Line 1:&Z (Plant Code)
&2 (2-Digit Date Code) &K
Line 2:65R
FIT :  1.5  
ESD (CDM) :  2000  V
ESD (HBM) :  4000  V
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  • 1.8 to 5.5V Input Voltage Range
  • Controlled Turn-On
  • 0.15-1.5A Adjustable Current Limit
  • ∓10% Current Limit Accuracy versus Temperature
  • Undervoltage Lockout
  • Thermal Shutdown
  • 2µA Shutdown Current
  • Fast Current limit Response Time 5µs to Moderate Over Currents 30ns to Hard Shorts
  • Reverse Current Blocking
  • RoHS compliant


  • Media Tablets
  • Storage & Peripherals
  • Mobile Handsets
  • Wireless LAN Card & Broadband Access
  • PMP/MP3 Players

Application Notes

Design Tools

Design Tool Design Tool
IntelliMAX™ Loadswitch The IntelliMAX Loadswitch design tool provides a flexible simulation environment where circuit designers can select components, review waveforms, and evaluate product performance for their circuit applications.

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