RV4141A Datasheet | Fairchild Semiconductor

Features - Powered from the AC Line - Built-In Rectifier - Direct Interface to SCR - 500μA Quiescent Current - Precision Sense Amplifier - Adjustable Time Delay - Minimum External ponents - Meets UL 943 Requirements - patible with 110V or 220V Systems - Available in an 8-Pin SOIC Package Description The RV4141A is a low-power controller for ACreceptacle, 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 plete the design of the basic circuit interrupter. The simple layout and minimum ponent count ensure ease of application and longterm 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 independent 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. Ordering Information Part Number RV4141AN RV4141AMT Operating Temperature Range -35 to +80°C -35 to +80°C Package 8-Lead, Plastic Dual-Inline Package (DIP) 8-Lead, Plastic Small-Outline Integrated Circuit (SOIC) Packing Method Rails Tape and Reel © 2003 Fairchild Semiconductor Corporation RV4141A - Rev. 1.0.8 .fairchildsemi. - Low-Power, Ground-Fault Interrupter Block Diagram Pin Configuration Figure 1. Block Diagram Figure 2. Pin Assignment Pin Definitions Pin # 1 2 3 4 5 6 7 Name Amp Out VFB VREF...