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KA3842 Datasheet(PDF) 1 Page - Wing Shing Computer Components

Part # KA3842
Description  Linear Integrated Circuit(CURRENT-MODE PWM CONTROLLER)
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Manufacturer  WINGS [Wing Shing Computer Components]
Direct Link  http://www.wingshing.com/en
Logo WINGS - Wing Shing Computer Components

KA3842 Datasheet(HTML) 1 Page - Wing Shing Computer Components

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CURRENT
−−MODE PWM CONTROLLER
The KA3842A
are fixe frequency current-mode
PWM controller. They are specially designed for OFF
−Line and DC−to−DC converter
applications with minimal external components. These integrated circuits feature a
trimmed oscillator for precise duty cycle control, a temperature compensated reference,
high gain error amplifier, current sensing comparator, and a high current totempole
output ideally suited for driving a power MOSFET.
Protection circuity includes built under
−voltage lockout and current limiting.
The
The KA3842A ,KA384AM
can
The KA3842A
have Start-Up Current 0,45 mA
FEATURES
• Low Start-Up Current
• Maximum Duty Cycle
• U/V Lockout With Hysteresis
• Operating Freguency Up To 500khz
ordering
information
Device
Package
Operating temperature
KA3842AM
SO-8
0 to +700C
BLOCK DIAGRAM
Absolute Maximum Ratings
Characteristic
Symbol
Value
Unit
Supply Voltage
VCC
30
V
Output Current
IO
±1
A
Analog Inputs
VI
−0.3 to VCC
V
Error Amp Output Sink Current
ISINK (E.A)
10
mA
Power Dissipation (TA=250C)
PO
1
W
Wing Shing Computer Components Co., (H.K.)Ltd.
Tel:(852)2341 9276
Fax:(852)2797 8153
Homepage: http://www.wingshing.com
E-mail:
wsccltd@hkstar.com
Linear Integrated Circuit
have UVLO thresholds of 16 V(on) and 10 V (off).
operate within 100% duty cycle
PIN CONNECTION
SO-8
1
in applications using the same external components as Motorola's parts,among others .The
DIP-8
SO-8
"
DIP-8
DIP-8
"
"
KA3842A
KA3842AM
KA3842AMM
KA3842AN
KA3842AMN
KA3842AM
KA3842A,KA3842AM
The KA3842A has been proven
KA3842AM
has been optimized for compatibility with Samsung's parts Many applications can use either
KA3842A or KA3842AM
KA3842AM


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