Offline Controllers | NCP1339

High Frequency Quasi-Resonant Controller

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The NCP1339 is a highly integrated quasi-resonant flyback controller capable of controlling rugged and high-performance off-line power supplies as required by adapter applications. With an integrated active X-cap discharge feature and power savings mode, the NCP1339 can enable no-load power consumption below 10 mW for 65 W notebook adapters.The quasi-resonant current-mode flyback stage features a proprietary valley-lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and toggles to a frequency foldback mode to eliminate switching losses. When the loop tends to force below 25-kHz frequencies, the NCP1339 skips cycles to contain the power delivery.To help build rugged converters, the controller features several key protective features: an internal brown-out, a non-dissipative Over Power Protection for a constant maximum output current regardless of the input voltage, a latched over voltage protection through a dedicated pin.

  • High Power Ac-Dc converters
  • Ultra High Density Adapters
  • Notebook Adapters
  • Flat TV SMPS
  • USB-Pd Adapters
  • Loss-free Adjustable Over Power Protection
  • Latched / Autorecovery Timer-Based Overload Protection
  • Brown Out Protection
  • High voltage startup current source
  • Active Input Filter Capacitor Discharge Circuitry
  • Latch input for OVP and OTP implementations
  • Valley Switching Operation with Valley-Lockout

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fsw Typ (kHz)

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Latch

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Reference Price

NCP1339CDR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-14 NB

751AN

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

30

500 / 800

Price N/A

More Details

NCP1339DDR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-14 NB

751AN

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

30

500 / 800

Price N/A

More Details

NCP1339EDR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-14 NB

751AN

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

30

500 / 800

Price N/A

More Details

NCP1339FDR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-14 NB

751AN

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

30

500 / 800

Price N/A

More Details

NCP1339GDR2G

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-14 NB

751AN

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

30

500 / 800

Price N/A

More Details

NCP1339HDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-14 NB

751AN

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

30

500 / 800

$0.6267

More Details

NCP1339IDR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-14 NB

751AN

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

30

500 / 800

Price N/A

More Details

NCP1339JDR2G

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-14 NB

751AN

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

30

500 / 800

Price N/A

More Details

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