onsemi NCL37733
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 the LED current to be tightly regulated from the primary side, thus eliminating the need for a secondary−side feedback circuitry and for an optocoupler. This device is specifically intended for very compact space efficient designs.| Part No. | NCL37733 |
|---|---|
| Datasheet | NCL37733 Download |
| Manufacturer |  onsemi |
| Description | LED Lighting Controller |
| Buy | Stock & Price |
FEATURES
● Quasi−resonant Peak Current−mode Control Operation● Constant Current Control with Primary Side Feedback
● Tight LED Constant Current Regulation of ±2% typical
● Near−Unity Power Factor (>0.95 typically)
● Optimized for Line Wide−range
APPLICATIONS
● Line Feedforward for Enhanced Regulation Accuracy● Low Start−up Current (10 mA typ.)
● Wide VCC Range
● 100 mA / 150 mA Totem Pole Driver with 12 V Gate Clamp
● Robust Protection
FEATURES
♦ OVP on VCC ♦ Programmable Over Voltage / LED Open Circuit Protection ♦ Cycle by cycle peak current limit ♦ Winding Short Circuit Protection ♦ Secondary Diode Short Protection ♦ Output Short Circuit Protection ♦ Thermal Shutdown ♦ VCC Undervoltage Lockout ♦ Brown−Out Detection● Pb−Free, Halide−Free MSL1 Product Typical Application
● Integral LED Bulbs and Tubes below 25 W
● LED Drivers / Power Supplies below 25 W 1 TSOP−6 CASE 318G−02 MARKING DIAGRAM 2T4AYWG G 1 2T4 = Specific Device Code A =Assembly Location Y = Year W = Work Week G = Pb−Fr...
