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KA3842ACS Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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KA3842ACS Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 6 page ©2006 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com March 2006 KA3842AC/KA3842AE Rev. 1.0.1 KA3842AC/KA3842AE SMPS Controller Features Low start current 0.2mA (Typ.) Operating range up to 500kHz Cycle by cycle current limiting Under Voltage Lock Out (UVLO) with hysteresis Short shutdown delay time: Typ.100ns High current totem-pole output Output swing limiting: 22V Description The KA3842AC/KA3842AE are fixed PWM controllers for Off Line and DC to DC converter applications. The internal circuits include UVLO, low start up current, tem- perature compensated reference, high gain error ampli- fier, current sensing comparator, and high current totem pole output for driving a POWER MOSFET. Also KA3842AC/KA3842AE provides low start up current below 0.3mA and short shutdown delay time, typically 100ns. The KA3842AC/KA3842AE has a UVLO thresh- old of 16V(on) and 10V(off). The KA3842AC/KA3842AE can operate within a 100% duty cycle. Ordering Information Part Number Operating Temp. Range Pb-Free Package Packing Method KA3842AC -0 to +70°C Yes 8-DIP Tube KA3842AE 1 8-DIP |
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