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FAN4146SX データシート(PDF) 1 Page - Fairchild Semiconductor

部品番号 FAN4146SX
部品情報  Ground Fault Interrupter
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メーカー  FAIRCHILD [Fairchild Semiconductor]
ホームページ  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN4146SX データシート(HTML) 1 Page - Fairchild Semiconductor

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August 2010
© 2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4146 • Rev. 1.0.0
FAN4146 — Ground Fault Interrupter
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 UL 943B Requirements
Ideal for 120V or 220V Systems
Space-Saving SuperSOT™ 6-Pin Package
Applications
Personal Care Products
Two-Wire Electrical Outlets, Circuit Breakers, and
Power Cords Requiring GFI Safety Features
ALCI and RCCB Circuits
Description
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 a 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.
Ordering Information
Part Number
Operating
Temperature Range
Package
Packing Method
FAN4146SX
0°C to +70°C
6-Lead SUPERSOT6, JEDEC MO-193, 1.6mm
Tape and Reel
FAN4146ESX
-25°C to +80°C
6-Lead SUPERSOT6, JEDEC MO-193, 1.6mm
Tape and Reel


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