FPF1039 − Low On-Resistance, Slew-Rate-Controlled Load Switch


The FPF1039 advanced load management switch targets applications requiring a highly integrated solution for disconnecting loads powered from DC Power Rail (<6 V) with stringent shutdown current targets and high load capacitances (up to 200 µF). The FPF1039 consists of slew-rate controlled low-impedance MOSFET switch (21 mΩ typical) and other integrated analog features. The slew-rate controlled turn-on characteristic prevents inrush-current and the resulting excessive voltage droop on power rails.

This device has exceptionally low shutdown current drain (<1 µA maximum) that facilitate compliance in very low standby power applications. The input voltage range operates from 1.2 V to 5.5 V DC to fulfill a wide range of applications in consumer, optical, medical, storage, portable, and industrial device power management.

Switch control is managed by a logic input (active HIGH) capable of interfacing directly with low-voltage control signal/GPIO with no external pull-up required. The device is packaged in advanced fully "green" 1 mm x 1.5 mm Wafer-Level Chip-Scale Packaging (WLCSP); providing excellent thermal conductivity, small footprint, and low electrical resistance for wider application usage.

Download Datasheet Buy Products Request Free Samples Product Availability

Product Status/Pricing/Packaging

Product Product & Eco Status *Pricing Packaging & Packing Info **Package Marking Convention Qualification Support Compliance Certificates
0 FPF1039UCX Full Production
Green as of Apr 2010
$0.2834  Details

Line 1:QF&K
Show more...
FIT :  0.7  
ESD (CDM) :  1500  V
ESD (HBM) :  8000  V
Show more...
0 FPF1039BUCX Full Production
Green as of Jan 2012
$0.276  Details

Line 1:QF&K
Show more...
FIT :  0.7  
ESD (HBM) :  8000  V
Moisture Sensitivity Level (MSL) :  1  
Show more...


  • 1.2 to 5.5 V Input Voltage Operating Range
  • Typical RDS(ON):
    • 20 mΩ at VIN=5.5 V
    • 21 mΩ at VIN=4.5 V
    • 37 mΩ at VIN=1.8 V
    • 75 mΩ at VIN=1.2 V
  • Slew Rate/Inrush Control with tR: 2.7 ms (Typical)
  • 3 A Maximum Continuous Current Capability
  • Output Discharge Function
  • Low 1 µA Quiescent Current
  • ESD Protected: Above 8 kV HBM, 1.5 kV CDM
  • GPIO/CMOS-Compatible Enable Circuitry


  • Storage & Peripherals
  • Other Wired Communications
  • Mobile Handsets
  • Wireless LAN Card & Broadband Access
  • Media Tablets
  • PMP/MP3 Player

Application Notes

© Copyright Fairchild Semiconductor. All rights reserved. Privacy Policy | Site Terms & Conditions | Standard Terms & Conditions of Sale | Trademarks | Site Map | IPC Saving our world 1mW at a time
  Knowledge Base Support Request Form.
  Slide to enable Submit button:
Locked Unlocked