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KA3842AC 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 KA3842AC
功能描述  SMPS Controller
Download  6 Pages
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

KA3842AC 数据表(HTML) 1 Page - Fairchild Semiconductor

  KA3842AC_06 Datasheet HTML 1Page - Fairchild Semiconductor KA3842AC_06 Datasheet HTML 2Page - Fairchild Semiconductor KA3842AC_06 Datasheet HTML 3Page - Fairchild Semiconductor KA3842AC_06 Datasheet HTML 4Page - Fairchild Semiconductor KA3842AC_06 Datasheet HTML 5Page - Fairchild Semiconductor KA3842AC_06 Datasheet HTML 6Page - Fairchild Semiconductor  
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©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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