rv4141 Fairchild Semiconductor, rv4141 Datasheet

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rv4141

Manufacturer Part Number
rv4141
Description
Low Power Ground Fault Interrupt Controller
Manufacturer
Fairchild Semiconductor
Datasheet

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Features
• Powered from the AC line
• Built-in rectifier
• Direct interface to SCR
• 500 µA quiescent current
• Precision sense amplifier
• Adjustable time delay
• Minimum external components
• Meets UL 943 requirements
• For use with 110V or 220V systems
• Available in an 8-pin SOIC package
Block Diagram
RV4141A
Low Power Ground Fault Interrupter
Amp Out
V
Gnd
V
REF
FB
RV4141A
+
+
+
Description
The RV4141A is a low-power controller for AC receptacle
ground fault circuit interrupters. These devices detect
hazardous current paths to ground and ground to neutral
faults. The circuit interrupter then disconnects the load from
the line before a harmful or lethal shock occurs.
Internally, the RV4141A contains a diode rectifier, shunt
regulator, precision sense amplifier, current reference, time
delay circuit, and SCR driver.
Two sense transformers, SCR, solenoid, three resistors and
four capacitors complete the design of the basic circuit inter-
rupter. The simple layout and minimum component count
ensure ease of application and long term reliability.
Features not found in other GFCI controllers include a low
offset voltage sense amplifier eliminating the need for a
coupling capacitor between the sense transformer and sense
amplifier, and an internal rectifier to eliminate high voltage
rectifying diodes.
The RV4141A is powered only during the positive half
period of the line voltage, but can sense current faults inde-
pendent of its phase relative to the line voltage. The gate of
the SCR is driven only during the positive half cycle of the
line voltage.
Delay
+
www.fairchildsemi.com
4.7K
65-4141-01
REV. 1.0.6 6/30/05
Cap
SCR
+V
Line
S

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rv4141 Summary of contents

Page 1

... The RV4141A is powered only during the positive half period of the line voltage, but can sense current faults inde- pendent of its phase relative to the line voltage. The gate of the SCR is driven only during the positive half cycle of the line voltage ...

Page 2

... JA 2 Amp Out Delay Cap SCR Trigger REF S GND Line 4 5 65-4141A-02 Min -65 -35 10 Sec, SOIC Min SOIC RV4141A Typ Max Units 10 mA 500 mW +150 °C +80 °C 125 °C 260 °C Typ Max Units 240 °C/W REV. 1.0.6 6/30/05 ...

Page 3

... RV4141A Electrical Characteristics Parameters Shunt Regulator (Pins Regulated Voltage Regulated Voltage Quiescent Current Sense Amplifier (Pins Offset Voltage Gain Bandwidth Slew Rate Input Bias Current SCR Trigger (Pins Output Resistance Output Voltage Output Voltage Output Current Reference Voltage (Pins ...

Page 4

... The SCR anode is directly connected to a solenoid or relay coil. The SCR can be tripped only when its anode is more positive than its cathode. Supply Current Requirements The RV4141A is powered directly from the line through a series limiting resistor called R , its value is between LINE 24 k and The controller IC has a built-in diode rectifi ...

Page 5

... Grounded Neutral 1:200 Phase Neutral C4 1000 X0103DA RV4141A 35V 5 4 Figure 1. GFI Application Circuit PRODUCT SPECIFICATION to meet the nominal ground fault trip cur- SET 4.6 N --------------------------------------------------------------- I COS 180 T P FAULT may have to be changed up to ...

Page 6

... Terminal numbers are shown for reference only "C" dimension does not include solder finish thickness Symbol "N" is the maximum number of terminals ccc C RV4141A REV. 1.0.6 6/30/05 ...

Page 7

... A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness. RV4141A Packing Method Tape and Reel 6/30/05 0.0m 001 Stock#DS2004141A ...

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