AC-DC LED Drivers | NCL37733

LED Driver with Power Factor Correction, Primary-Side-Regulated

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Overview

The NCL37733 is a compact driver for power−factor corrected flyback and non−isolated buck−boost and SEPIC converters. The controller operates in a quasi−resonant mode to provide optimal efficiency, and embeds a proprietary control method which allows theLED current to be tightly regulated from the primary side, thus eliminating the need for a secondary−side feedback circuitry and for an optocoupler.

  • Integrated LED Drive Electronics

  • LED Lighting

  • Constant Current Control with Primary Side Feedback
  • Precise Current Regulation Accuracy
  • Power Factor Correction with low harmonic distortion
  • Line Feedforward for Enhanced Regulation Accuracy
  • Wide Vcc operating range
  • Latched and Auto-recoverable versions
  • Secondary Diode Short Protection
  • Open and Shorted LED Protection
  • Wide Temperature range of -40 to 125 °C
  • Housing in TSOP-6 package

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NCL37733BSNT1G

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CAD Model

Pb

A

H

P

TSOP-6

318G-02

3

260

REEL

3000

F

Step-Up/Step-Down/SEPIC

8.2

25.5

14

100

Variable

$0.2008

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Reliability Data

Die Related Summary Data

Device: NCL37733BSNT1G

Equivalent to wafer fab process: ONC25

Product Technology

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Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

ONC25

1

2712519294

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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