RV4145AN

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This literature is subject to all applicable copyright laws and is not for resale in any manner. RV4145A — Low-Power Ground Fault Interrupter Features Description  No Potentiometer Required  Direct Interface to Silicon-Controlled Rectifier (SCR)  Supply Voltage Derived from AC Line – 26 V Shunt  Adjustable Sensitivity  Grounded Neutral Fault Detection  Meets U.L. 943 Standards  450 μA Quiescent Current  Ideal for 120 V or 220 V Systems The RV4145A is a low-power controller for AC outlet ground fault interrupters. These devices detect hazardous grounding conditions, such as equipment (connected to opposite phases of the AC line) in contact with a pool of water and open circuits the line before a harmful or lethal shock occurs. A 26 V Zener shunt regulator, an operational amplifier, and an SCR driver are contained internally. With the addition of two sense transformers, a bridge rectifier, an SCR, a relay, and a few additional components; the RV4145A can detect and protect against both hot-wireto-ground and neutral-wire-to-ground faults. The simple layout and conventional design ensure ease of application and long-term reliability. Figure 1. Block Diagram Ordering Information Part Number RV4145AN RV4145AMT Operating Temperature Range -35°C to +85°C © 2004 Fairchild Semiconductor Corporation GPN • Rev. 1.0.6 Package 8-Lead, MDIP, JEDEC MS-001, .300" Wide 8-Lead, SOIC, JEDEC MS-012, .150" Narrow Body Packing Method Rail Tape and Reel www.fairchildsemi.com RV4145A — Low Power Ground Fault Interrupter April 2014 RV4145A — Low Power Ground Fault Interrupter Pin Configuration Figure 2. Pin Assignment Pin Descriptions Pin# Name 1 VFB Sense amplifier negative input 2 +Input Sense amplifier positive input 3 VREF Reference Voltage 4 GND Ground 5 NC 6 Op Amp Output 7 +VS 8 SCR Trigger © 2004 Fairchild Semiconductor Corporation RV4145A • Rev. 1.0.6 Description No Connect Sense Amplifier Output Supply input for RV4145A circuitry Output for triggering external SCR when a fault is detected www.fairchildsemi.com 2 Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Min. Typ. Max. Unit VCC Supply Current 18 mA PD Internal Power Dissipation 500 mW TSTG Storage Temperature Range -65 +150 °C TA Operating Temperature Range -35 +85 °C TJ Junction Temperature 125 °C TL Lead Soldering Temperature TA