Low-Power Ground Fault Interrupter RV4145A Description The RV4145A is a lowpower controller for AC outlet ground fault interrupters. These devices detect hazardous grounding conditions, www.onsemi.com 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 MARKING or lethal shock occurs. DIAGRAM A 26 V Zener shunt regulator, an operational amplifier, and an SCR driver are contained internally. With the addition of two sense Y&Z&2&K transformers, a bridge rectifier, an SCR, a relay, and a few additional PDIP8 RV4145AN components the RV4145A can detect and protect against both CASE 62605 hotwire toground and neutralwiretoground faults. The simple layout and conventional design ensure ease of application and longterm reliability. Features Y&Z&2&K SOIC8 RV4145AM No Potentiometer Required CASE 751EB Direct Interface to SiliconControlled Rectifier (SCR) Supply Voltage Derived from AC Line 26 V Shunt Adjustable Sensitivity RV4145AN, = Specific Device Code Grounded Neutral Fault Detection RV4145AM Meets U.L. 943 Standards Y = ON Semiconductor Logo &Z = Assembly Plant Code 450 A Quiescent Current &2 = 2Digit Date Code Ideal for 120 V or 220 V Systems &K = 2Digits Lot Run Traceability Code These are PbFree Devices ORDERING INFORMATION See detailed ordering and shipping information on page 7 of this data sheet. Figure 1. Block Diagram Semiconductor Components Industries, LLC, 2004 1 Publication Order Number: April, 2021 Rev. 2 RV4145A/DRV4145A PIN CONFIGURATION Figure 2. Pin Assignment PIN DESCRIPTION Pin No. Name Description 1 V Sense amplifier negative input FB 2 +Input Sense amplifier positive input 3 V Reference Voltage REF 4 GND Ground 5 SCR Trigger Output for triggering external SCR when a fault is detected 6 +V Supply input for RV4145A circuitry S 7 Op Amp Output Sense Amplifier Output 8 NC No Connect ABSOLUTE MAXIMUM RATINGS Symbol Parameter Min Typ Max Unit V Supply Current 18 mA CC P Internal Power Dissipation 500 mW D T Storage Temperature Range 65 +150 C STG T Operating Temperature Range 35 +85 C A T Junction Temperature 125 C J T Lead Soldering Temperature 60 s, DIP 300 C L 10 s, SOIC 260 P Power Dissipation T <50C SOIC 300 mW D A PDIP 450 T <50C Derate SOIC 4 mW/C A PDIP 6 Thermal Resistance SOIC 240 C/W JA PDIP 160 Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. www.onsemi.com 2