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GFCI Controllers | FAN4146

Ground Fault Interupter

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Overview

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 SuperSOTâ„¢ 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 SuperSOTâ„¢ package enable for a low-cost, compact design and layout. The FAN4146ESX is an enhanced temperature range device.

  • Building & home control
  • Consumer appliances

  • 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

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FAN4146ESX

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Last Shipments

CAD Model

Pb

A

H

P

TSOT-23-6

419BL

1

260

REEL

3000

N

~NA~

-1.5

16

15

12.7

-35

85

Price N/A

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FAN4146SX

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Last Shipments

CAD Model

Pb

A

H

P

TSOT-23-6

419BL

1

260

REEL

3000

N

~NA~

-1.5

16

15

12.7

0

70

Price N/A

More Details

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Reliability Data

Die Related Summary Data

Device: FAN4146ESX

Equivalent to wafer fab process: 3

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

3

0

177026424

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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