FAN4146: Ground Fault Interupter

Description: The FAN4146 is a low-power controller for AC outle...
  • The FAN4146 is a low-power controller for AC outlet appliance leakage circuit interrupters (ALCI) and two-wire residual current devices (RCD). The FAN4146 detects hazardous grounding conditions and open circuits the line before a harmful shock occurs.
    Internally, the FAN4146 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 the addition of a minimum number of external components, the FAN4146 detects and protects against a hot-wire-to-ground fault. The minimum number of components and the small SuperSOT™ package allow for a small-form-factor, low-cost application solution.
    The FAN4146 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 for a low-cost, compact design and layout. The FAN4146ESX is an enhanced temperature range device.
  • Features
  • For two wire ALCI and RCD applications
  • Precision sense amplifier and bandgap reference
  • Built-in AC rectifier
  • Direct DC coupled to sense coil
  • Built-in noise filter
  • Low-voltage SCR disable
  • SCR gate driver
  • Adjustable sensitivity
  • Minimum external components
  • Meets UL943B requirements
  • Ideal for 120V or 220V systems
  • Applications
  • Building & home control
  • Consumer appliances
  • Technical Documentation & Design Resources
    Availability and Samples
    FAN4146ESX
  • 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):Contact Factory
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  • Digikey:>1K
  • Newark:>1K
  • FAN4146SX
  • 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):Contact Factory
  • Arrow:0
  • ON Semiconductor:13,926
  • Specifications
  • Channels:  
  • VCC Min (V):  
  • VCC Max (V): 12.7 
  • IT Max (mA):  
  • VI Typ (V):  
  • TA Min (°C): -35 
  • TA Max (°C): 85  70 
  • Package Type: TSOT-23-6 
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