MC3423

MC3423 Overvoltage Crowbar Sensing Circuit This overvoltage protection circuit (OVP) protects sensitive electronic circuitry from overvoltage transients or regulator failures when used in conjunction with an external “crowbar” SCR. The device senses the overvoltage condition and quickly “crowbars” or short circuits the supply, forcing the supply into current limiting or opening the fuse or circuit breaker. The protection voltage threshold is adjustable and the MC3423 can be programmed for minimum duration of overvoltage condition before tripping, thus supplying noise immunity. The MC3423 is essentially a “two terminal” system, therefore it can be used with either positive or negative supplies. Features http://onsemi.com MARKING DIAGRAMS 8 1 PDIP−8 P1 SUFFIX PLASTIC PACKAGE CASE 626 MC3423P1 AWL YYWW Pb−Free Package is Available MC3423P1 = Device Code A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week MAXIMUM RATINGS Rating Differential Power Supply Voltage Sense Voltage (1) Sense Voltage (2) Remote Activation Input Voltage Output Current Operating Ambient Temperature Range Operating Junction Temperature Storage Temperature Range Symbol VCC−VEE VSense1 VSense2 Vact IO TA TJ Tstg Value 40 Unit Vdc 6.5www.DataSheet4U.com Vdc 6.5 7.0 300 0 to +70 125 −65 to +150 Vdc Vdc mA °C °C °C 8 1 8 SOIC−8 D SUFFIX PLASTIC PACKAGE CASE 751 3423 ALYW 1 Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individua...