The LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high power LEDs. The high-frequency capable architecture allows the use of small external passive components. A passive PFC circuit ensures good power factor by drawing current directly from the line for most of the cycle, and provides a constant positive voltage to the buck regulator. Additional features include thermal shutdown, current limit and VCC undervoltage lockout. The LM3444 is available in a low profile 10-pin VSSOP package or an 8-lead SOIC package.
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | LM3444 AC-DC Offline LED Driver datasheet (Rev. D) | PDF | HTML | 31 dic 2015 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 sep 2020 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 jun 2018 | ||
| Application note | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 03 may 2013 | ||
| Application note | AN-2082 LM3444 -120VAC, 8W Isolated Flyback LED Driver (Rev. E) | 01 may 2013 | ||
| User guide | AN-2083 LM3444 A19 Edison Retrofit Evaluation Board (Rev. C) | 01 may 2013 | ||
| Application note | AN-2097 LM3444 - 230VAC, 8W Isolated Flyback LED Driver (Rev. F) | 01 may 2013 | ||
| Application note | An Improved Line Regulation Solution Used in LM3444/5 Non-Isolated LED Lighting | 25 oct 2012 | ||
| User guide | LM3444 MR16 Buck-Boost Reference Design (Rev. A) | 17 feb 2012 | ||
| User guide | LM3444 MR16 Boost Reference Design User Guide (Rev. A) | 13 feb 2012 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
| Paquete | Pasadores | Descargar |
|---|---|---|
| SOIC (D) | 8 | Ver opciones |
| VSSOP (DGS) | 10 | Ver opciones |
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI.