AC-DC LED Drivers | NCL30083

Step Dimmable Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting with thermal foldback

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The NCL30083 is a PWM current mode controller targeting isolated flyback and non-isolated buck-boost constant current topologies. The controller operates in a quasi-resonant mode to provide high efficiency. Thanks to a novel control method, the device is able to precisely regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, biasing and an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design. The device supports 5 step log dimming down to 5%. To enhance system lifetime, it has current foldback at a user programmable temperature point. While the NCL30083 has integrated fixed overvoltage protection, the designer has the option to program a lower overvoltage protection level.

  • Line Powered LED Drivers
  • Integral Driver Electronics
  • Integral LED Bulbs and downlights
  • LED Light Engines
  • Electronic Control Gear for LEDs
  • Primary Side Sensing
  • Wide VCC Range
  • Precise LED Current Regulation of ±1% typical
  • ~ 0.9 power factor with passive valley fill
  • User Programmable Thermal Foldback
  • Open and Shorted Output Protection
  • Secondary Diode Short Protection
  • 5 Step Dimmable to < 5% output current
  • VCC undervoltage and overvoltage protection
  • Latched (A version) and Auto-recoverable (B version) fault handling
  • Wide temperature range of -40 to 125 °C
  • Input Line Voltage Sensing
  • Programmable Soft start

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NCL30083BDR2G

Last Shipments

Pb

A

H

P

SOIC-8

751-07

3

260

REEL

2500

N

Flyback

9.4

26

300

3000

Up to 150

Price N/A

More Details

NCL30083ADMR2G

Last Shipments

Pb

A

H

P

Micro8

846A-02

1

260

REEL

4000

N

Flyback

9.4

26

300

3000

Up to 150

Price N/A

More Details

NCL30083BDMR2G

Last Shipments

Pb

A

H

P

Micro8

846A-02

1

260

REEL

4000

N

Flyback

9.4

26

300

3000

Up to 150

Price N/A

More Details

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