CS294 Datasheet | Cherry Semiconductor Corporation

Description The CS294 is an AC outlet ground fault interrupter controller IC. The IC detects the presence of hazardous grounding conditions and open circuits the AC line before a dangerous shock can occur. The CS294 contains an operational amplifier, an SCR driver and a 24V zener shunt regulator. Two sense coils, a bridge rectifier, a relay and an SCR are required as external ponents. The pleted interrupter circuit can detect and protect against both hot wire to ground faults and neutral wire to ground faults. The CS294 is built on a 30V bipolar process and is available in 8 lead DIP packages. Features s Supply Derived from AC Supply Ñ 24V s Direct Interface to SCR s Adjustable Sensitivity s Grounded Neutral Fault Detection Block Diagram Amp OUT +VS VFB 20k W Signal mon 10k W Filter Bias + 50k W + SCR Trigger + 4.7k W Package Options 8 Lead PDIP & SO Narrow VFB 1 Filter Signal mon Gnd Detect Amp OUT +VS SCR Trigger Gnd Detect Cherry Semiconductor Corporation 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885-3600 Fax: (401)885-5786 Email: info@cherry-semi. Web Site: .cherry-semi. Rev. 1/20/99 ¨ pany Absolute Maximum Ratings Operating Junction Temperature, TJ - - - - - - - - - - - - - 150¡C Lead Temperature Soldering: Wave Solder (through hole styles only) - - - - - - - - . . 10 Sec. max 260ûC Peak Reflow (SMD styles only) - - - - - - - - . . . 60 sec. max above 183¡C, 230¡ peak Storage Temperature Range, TS - - - - - - - - - - - - . -65¡C to...