| FLYiNG 零件編號 | ICLM3444MAX/NOPBTI |
| FLYiNG 庫存現貨 | 電洽/Contact |
| 製造商 | TEXAS INSTRUMENTS |
| 製造商零件編號 | LM3444MAX/NOPB |
| 說明 | LM3444MAX/NOPB SOIC-8 TI |
| 無鉛狀態 / RoHS 指令狀態 | RoHS |
| 半導體 | AC-DC Offline LED Drive |
| 製造商 | TEXAS INSTRUMENTS |
| 系列 | LM3444 AC-DC Offline LED Driver |
| 原廠料號 | LM3444MAX/NOPB |
| 說明 | LM3444MAX/NOPB SOIC-8 TI |
| 輸出數 | 1 |
| 電源電壓 | 8~13V |
| 工作溫度 | -40°C ~ 125°C (TJ) |
| 安裝類型 | SMD表面黏著式 |
| 封裝／外殼 | SOIC-8 |
| 標準包裝 | 2500/Reel |
文件:LM3444.png)
LM3444
AC-DC Offline LED Driver
Feature
Description
The LM3444 is an adaptive constant off-time AC/DC AC buck (step-down) constant current controller thatprovides 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
LM3444
AC-DC Offline LED Driver
Feature
- Application Voltage Range: 80 VAC to 277VAC
- Capable of Controlling LED Currents Greater than 1A
- Adjustable Switching Frequency
- Low Quiescent Current
- Adaptive Programmalbe 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
- Solid State Lighting
- Industrial and Commercial Lighting
- Residential Lighting
Description
The LM3444 is an adaptive constant off-time AC/DC AC buck (step-down) constant current controller thatprovides 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
LM3444
AC-DC 離線式 LED 驅動器
特性
- 適用電壓範圍：80VAC 至 277VAC
- 可控制超過 1A 的 LED 電流
- 可調整開關頻率
- 低靜態電流
- 自適應可程式化關斷時間，實現恆定漣波電流
- 具備過熱關斷保護（Thermal Shutdown）
- 120Hz 無閃爍設計
- 低外型 10 引腳 VSSOP 封裝或 8 引腳 SOIC 封裝
- 專利驅動架構
應用
- 固態照明（Solid State Lighting）
- 工業與商業照明
- 住宅照明
描述
LM3444 是一款自適應恆定關斷時間的 AC/DC 降壓（Buck）恆流控制器，專為高功率 LED 照明設計。其高頻架構允許使用小型外部被動元件，並透過被動式功率因數校正（PFC）電路，確保良好的功率因數，於大部分電源週期內直接從電網汲取電流，提供穩定的正電壓至降壓調節器。額外功能包含熱關斷、電流限制與 VCC 欠壓鎖定（UVLO）。LM3444 採用低外型 10 引腳 VSSOP 封裝。
