(Hong Kong)
Product Summary
The KA3842A is fixe frequency current-mode PWM controller. It is specially designed for OFF-Line and DC-to-DC converter applications with minimal external components. This integrated circuit features 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.
Parametrics
KA3842A absolute maximum ratings: (1)Supply Voltage, VCC: 30V; (2)Output Current, IO: ±1A; (3)Analog Inputs, VI: -0.3 to VCCV; (4)Error Amp Output Sink Current ISINK(E.A): 10 mA; (5)Power Dissipation (TA=25℃), PO: 1W.
Features
KA3842A features: (1)Low Start-Up Current; (2)Maximum Duty Cycle; (3)U/V Lockout With Hysteresis; (4)Operating Freguency Up To 500khz.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 KA3842A |
Other |
|
Data Sheet |
Negotiable |
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KA3842AC |
Other |
|
Data Sheet |
Negotiable |
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 |
KA3842ACS |
Fairchild Semiconductor |
DC/DC Switching Controllers SMPS Controller |
Data Sheet |
|
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KA3842ACDS |
Fairchild Semiconductor |
Supervisory Circuits SMPS Controller |
Data Sheet |
Negotiable |
|
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|
KA3842ACDSTF |
Fairchild Semiconductor |
Supervisory Circuits |
Data Sheet |
Negotiable |
|
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|
KA3842AE |
Other |
|
Data Sheet |
Negotiable |
|
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|
KA3842AES |
Fairchild Semiconductor |
DC/DC Switching Controllers SMPS Controller |
Data Sheet |
Negotiable |
|
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|
KA3842AM |
Other |
|
Data Sheet |
Negotiable |
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