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KA3842AM Schematic ( PDF Datasheet ) - Wing Shing Computer Components

Teilenummer KA3842AM
Beschreibung Linear Integrated Circuit(CURRENT-MODE PWM CONTROLLER)
Hersteller Wing Shing Computer Components
Logo Wing Shing Computer Components Logo 




Gesamt 5 Seiten
KA3842AM Datasheet, Funktion
Linear Integrated Circuit
KA3842A
KA3842AM
CURRENTMODE PWM CONTROLLER
The KA3842A KA3842AM are fixe frequency current-mode
PWM controller. They are specially designed for OFFLine and DCtoDC 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 undervoltage lockout and current limiting.
The
The
KKAA33884422AA,,KKAA3388442AAMM
haveoUpVerLaOtceathwnriethsihno1ld0s0%of
16 V(on) and 10
duty cycle The
V (off).
KA3842A
has
been
proven
in applications using the same external components as Motorola's parts,among others .The KA3842AM
has been optimized for compatibility with Samsung's parts Many applications can use either
KA3842A or KA3842AM The KA3842A KA3842AM 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
BLOCK DIAGRAM
ordering
information
Device
KA3842AM
KA3842AMM
KA3842AN
KA3842AMN
Package
SO-8
SO-8
DIP-8
DIP-8
PIN CONNECTION
SO-8
DIP-8
Operating temperature
0 to +700C
"
"
"
Absolute Maximum Ratings
Characteristic
Supply Voltage
Output Current
Analog Inputs
Error Amp Output Sink Current
Power Dissipation (TA=250C)
Symbol
VCC
IO
VI
ISINK (E.A)
PO
Value
30
±1
0.3 to VCC
10
1
Unit
V
A
V
mA
W
Wing Shing Computer Components Co., (H.K.)Ltd.
Homepage: http://www.wingshing.com
Tel:(852)2341 9276 Fax:(852)2797 8153
1





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