LM3444MM/NOPB 供应商
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LM3444MM/NOPB
品牌：TI 封装/批号：原厂原装/22+ -
LM3444MM/NOPB
品牌：NSC-NAT/ELNAF 封装/批号：10MSOP/1928+
LM3444MM/NOPB 属性参数
- 制造商：National Semiconductor (TI)
- 输入电压：8 V to 13 V
- 工作频率：Adjustable
- 最大电源电流：2.25 mA
- 最大工作温度：+ 125 C
- 安装风格：SMD/SMT
- 封装 / 箱体：SOIC-8
- 最小工作温度：- 40 C
- 封装：Reel
- 工厂包装数量：1000
产品特性
- 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
产品概述
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.
LM3444MM/NOPB 电路图
