FPF2194

Datasheet Buy Sample

Full Function Load Switch with Adjustable Current Limit

General Description

The FPF2193, FPF2194, and FPF2195 form a series of load switches that provides full protection to systems and loads that may encounter large current conditions. These devices contain a 55mΩ current-limited Pchannel MOSFET that can operate over an input voltage range of 1.8 to 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 that 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. For the FPF2193 and FPF2194, if the constant current condition still persists after 30ms, the parts shut off the switch and pull the fault signal pin (FLAGB) LOW. The FPF2193 has an auto-restart feature that turns the switch on again after 450ms if the ON pin is still active. The FPF2194 does not have this auto-restart feature, so the switch remains off until the ON pin is cycled. The FPF2195 does not turn off after a current limit fault, but remains in the constant-current mode indefinitely. The minimum current limit is 100mA. These parts are available in a space-saving six ball advanced 1 x 1.5mm WLCSP package.

Product Status/Pricing/Packing

Product Product Status Eco Status *Pricing Package Type Leads Packing Method Package Drawing **Package Marking Convention RoHS IPC1752 RoHS/REACH/JIG Certificate of Compliance
FPF2194 Full Production Green as of Apr 2009 $0.56 CSP 6-LEAD 6 TAPE REEL PDF Line 1:S7&K
Show more ...
PDF opens in a new window
XML opens in a new window
PDF opens in a new window

Features

  • 1.8 to 5.5V Input Voltage Range
  • Controlled Turn-On
  • 0.1 to 1.5A Adjustable Current Limit
  • Under-Voltage Lockout
  • Thermal Shutdown
  • 2µA Shutdown Current
  • Auto Restart
  • Fast Current Limit Response Time
  • 5µs to Moderate Over Currents
  • 30ns to Hard Shorts
  • Fault Blanking
  • Reverse Current Blocking

Applications

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

Application Notes

Multilanguage - Chinese Multilanguage - English Multilanguage - Japanese Multilanguage - Korean