LM3444
- Application Voltage Range: 80 VAC to 277 VAC
- Capable of Controlling LED Currents
Greater than 1 A - Adjustable Switching Frequency
- Low Quiescent Current
- Adaptive Programmable Off-Time Allows for
Constant Ripple Current - Thermal Shutdown
- No Flicker at 120 Hz
- Low-Profile 10-Pin VSSOP Package
or 8-Lead SOIC Package - Patented Drive Architecture
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.
技術文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 10 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM3444 AC-DC Offline LED Driver datasheet (Rev. D) | PDF | HTML | 2015年 12月 31日 |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020年 9月 21日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application note | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | 2013年 5月 3日 | ||
| Application note | AN-2082 LM3444 -120VAC, 8W Isolated Flyback LED Driver (Rev. E) | 2013年 5月 1日 | ||
| User guide | AN-2083 LM3444 A19 Edison Retrofit Evaluation Board (Rev. C) | 2013年 5月 1日 | ||
| Application note | AN-2097 LM3444 - 230VAC, 8W Isolated Flyback LED Driver (Rev. F) | 2013年 5月 1日 | ||
| Application note | An Improved Line Regulation Solution Used in LM3444/5 Non-Isolated LED Lighting | 2012年 10月 25日 | ||
| User guide | LM3444 MR16 Buck-Boost Reference Design (Rev. A) | 2012年 2月 17日 | ||
| User guide | LM3444 MR16 Boost Reference Design User Guide (Rev. A) | 2012年 2月 13日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
模擬工具
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGS) | 10 | Ultra Librarian |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點