KA3882/3/4/5
SMPS CONTROLLER
CURRENT MODE PWM CONTROLLER
The KA3882/3/4/5 are fixed PWM controller for Off-Line and DC
to DC converter applications. The internal circuits include UVLO,
low start up current circuit, temperature compensated reference,
high gain error amplifier, current sensing comparator, and high
current totempole output for driving a POWER MOSFET. Also KA
3882/3/4/5 provide low start up current below 0.3mA and short
shutdown delay time typ. 100ns.
The KA3882 and KA3884 have UVLO threshold of 1 6V(on) and
10V(off).
The KA3883 and KA3885 are 8.4V(on) and 7.6V(off).
The KA3882 and KA3883 can operate within 100% duty cycle.
The KA3884 and KA3885 within 50% by using T Flip-Flop.
8 DIP
8 SOP
FEATURES
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Low Start Current 0.2mA (typ)
Operating Range Up To 500KHz
Cycle by Cycle Current Limiting
Under Voltage Lock Out With Hysteresis
Short Shutdown Delay Time: typ.100ns
High Current Totempole Output
Output Swing Limiting: 22V
ORDERING INFORMATION
Device
KA388X
KA388XD
Package
8 DIP
8 SOP
Operating Temperature
脦
0 ~ + 85
脦
0 ~ + 85
BLOCK DIAGRAM
Rev. B
漏1999 Fairchild Semiconductor Corporation
KA388XD相關(guān)型號PDF文件下載
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