CS294 CS294 DE SI GN Ground Fault Interrupter Description EW an SCR are required as external components. The completed 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. RE CO MM EN DE D AR CH IF V OR E N 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 Features ■ Supply Derived from AC Supply — 24V ■ Direct Interface to SCR ■ Adjustable Sensitivity ■ Grounded Neutral Fault Detection Block Diagram +VS AmpOUT − 50kΩ VFB 20kΩ Signal Common Package Options + − 8 Lead PDIP SCR Trigger + 10kΩ Filter − Filter 4.7kΩ Signal Common Gnd Gnd Detect AmpOUT +VS SCR Trigger Detect DE VI CE NO T VFB 1 + Bias ON Semiconductor 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885–3600 Fax: (401)885–5786 N. American Technical Support: 800-282-9855 Web Site: www.onsemi.com April, 2001 - Rev. 4 1 CS294 Absolute Maximum Ratings Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C Lead Temperature Soldering: Wave Solder (through hole styles only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Sec. max 260°C Peak Reflow (SMD styles only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 sec. max above 183°C, 230° peak Storage Temperature Range, TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C Pin Symbol VFB Filter Signal Common Gnd SCR Trigger +VS AmpOUT Detect Pin Name Error Amp Inverting Input Error Amp Non-Inverting Input Signal Reference Input Power Supply Return SCR Driver Output Shunt Regulator Supply Input Error Amp Output Ground Fault Detect Input VMAX VMIN ISOURCE ISINK 30V 30V V(+VS) + 1V 0V 30V 30V 30V 6V −0.3V −0.3V V(+VS) − 1V 0V −0.3V −0.3V −0.3V −0.3V N/A 1mA 1ma 1mA 1mA 1mA 1mA 10mA 20mA 1mA 1ma 10mA 1mA 1mA 1mA 10mA Electrical Characteristics: TA = 25°C. For ease of testing and improved test accuracy, Signal Common is grounded and a negative voltage is applied to the Gnd pin. PARAMETER Supply Current Negative Supply Voltage Clamp Positive Supply Voltage Clamp Output Offset Voltage Output Resistance Negative Amp Output Swing Positive Amp Output Swing Positive Detect Threshold Negative Detect Threshold Detect Leakage Current Amplifier Open Loop Gain Operating Temperature Range TA (Note 1) TEST CONDITIONS MIN TYP +VS I(SCR Trigger) = 100µA −14.1 9.7 −400 2.89 8.5 5.9 −7.2 V(SCR Trigger) = 0V V(VFB) = 1mV RMS @ 50kHz Note 1: Guaranteed by design. 2 20 0 −11.9 11.9 67 4.70 −10.95 11.5 6.5 −6.5 0.5 90 MAX UNIT 1.2 −9.7 14.1 +1100 6.78 −8.5 mA V V mV kΩ V V V V µA V/V °C 7.2 −5.9 5.0 70 PACKAGE PIN # PIN SYMBOL FUNCTION 8 Lead PDIP 1 VFB The VFB pin is the inverting input to the on-chip operational amplifier. 2 Filter The Filter pin is the non-inverting input to the on-chip operational amplifier. 3 Signal Common The Signal Common pin connects to +VS/2, to a 20kΩ resistor tied to VFB and to a 10kΩ resistor tied to Filter. 4 Gnd The Gnd pin is the power return terminal 5 SCR Trigger The SCR Trigger pin drives the silicon controlled rectifier during fault conditions. An internal 4.7kΩ resistor between this pin and Gnd holds the SCR off in non-fault conditions. 6 +VS The +VS pin is the power input to the IC. 7 AmpOUT The AmpOUT pin is the output of the on-chip operational amplifier. 8 Detect The Detect pin is the fault detector input. 3 CS294 Package Pin Description CS294 Package Specification PACKAGE DIMENSIONS IN mm (INCHES) PACKAGE THERMAL DATA Thermal Data D Lead Count 8 Lead PDIP Metric Max Min 10.16 9.02 English Max Min .400 .355 RΘJC typ 8 Lead PDIP 52 RΘJA typ 100 °C/W °C/W Plastic DIP (N); 300 mil wide 7.11 (.280) 6.10 (.240) 8.26 (.325) 7.62 (.300) 1.77 (.070) 1.14 (.045) 2.54 (.100) BSC 3.68 (.145) 2.92 (.115) .356 (.014) .203 (.008) 0.39 (.015) MIN. .558 (.022) .356 (.014) REF: JEDEC MS-001 D ON Semiconductor and the ON Logo are trademarks of Semiconductor Components Industries, LLC (SCILLC). ON Semiconductor reserves the right to make changes without further notice to any products herein. For additional information and the latest available information, please contact your local ON Semiconductor representative. Ordering Information Part Number CS294GN8 Some 8 and 16 lead packages may have 1/2 lead at the end of the package. All specs are the same. Description 8 Lead PDIP 4 © Semiconductor Components Industries, LLC, 2001