FAN4147: Ground Fault Interupter

Description: The FAN4147 is a low-power Ground Fault Interrupte...
  • The FAN4147 is a low-power Ground Fault Interrupter (GFI) controller for detecting hazardous current paths to ground and ground-to-neutral faults. The FAN4147 application circuit opens the load contacts before a harmful shock occurs.
    Internally, the FAN4147 contains a diode rectifier, precision bandgap 12V shunt regulator, precision low-VOS offset-sense amplifier, time delay noise filter, window-detection comparators, and an SCR driver. With a minimum number of external components, the FAN4147 detects and protects against a hot-wire-to-ground fault and a neutral-line-to-neutral-load short. The minimal components and the small SuperSOT™ package allow for a small-form-factor, low-cost solution.
    The FAN4147 circuitry has a built-in rectifier and shunt regulator that operates with a low quiescent current. This allows for a high-value, low-wattage-series supply resistor. The internal temperature-compensated shunt regulator, sense amplifier, and bias circuitry provide for precision ground-fault detection. The low-VOS offset-sense amplifier allows direct coupling of the sense coil to the amplifier’s feedback signal. This eliminates the large 50/60Hz AC-coupling capacitor. The internal delay filter rejects high-frequency noise spikes common with inductive loads. This decreases false nuisance tripping. The internal SCR driver is temperature compensated and designed to satisfy the current requirements for a wide selection of external SCRs.
    The minimum number of external components and the 6-pin SuperSOT™ package enable a low-cost, compact design and layout.
  • Features
  • For GFCI and RCD applications
  • Precision sense Amplifier and bandgap reference
  • Built-in AC rectifier
  • Built-in noise filter
  • Low-voltage SCR disable
  • Direct DC coupled to sense coil
  • SCR gate driver
  • Adjustable sensitivity
  • 400µA quiescent current
  • Minimum external components
  • Meets UL943 requirements
  • Ideal for 120V or 220V systems
  • Applications
  • Building & home control
  • Consumer appliances
  • Technical Documentation & Design Resources
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Ground Fault Interupter
  • Package Type: TSOT-23-6
  • Package Case Outline: 419BL
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • Digikey:<1K
  • Specifications
  • Channels:  
  • VCC Min (V): -1.2 
  • VCC Max (V): 16 
  • IT Max (mA): 15 
  • VI Typ (V): 12.7 
  • TA Min (°C): -35 
  • TA Max (°C): 85 
  • Package Type: TSOT-23-6 
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