LM3401 用于高功率 LED 驱动的滞后 PFET 控制器 | 德州仪器 TI.com.cn

LM3401 (正在供货) 用于高功率 LED 驱动的滞后 PFET 控制器

用于高功率 LED 驱动的滞后 PFET 控制器 - LM3401


  • LM3409  -  PFET buck controller for high power LEDs


The LM3401 is a switching controller designed to provide constant current to high power LEDs. The LM3401 drives an external P-MOSFET switch for step-down (Buck) regulators. The LM3401 delivers constant current within ±6% accuracy to a wide variety and number of series connected LEDs. Output current is adjusted with an external current sensing resistor to drive high power LEDs in excess of 1A.

For improved accuracy and efficiency, the LM3401 features dual-side hysteresis, very low reference voltage, and short propagation delay. A cycle by cycle current limit provides protection against over current and short circuit failures. Additional features include adjustable hysteresis and a CMOS compatible input pin for PWM dimming.


  • Hysteretic Control for Speed and Simplicity
  • Input Operating Range of 4.5V-35V
  • 1.5MHz Maximum Switching Frequency
  • Low 200mV Reference Voltage
  • Programmable Current Limit
  • High speed CMOS Compatible Enable/Dimming
  • Adjustable Hysteresis
  • Input UVLO
  • No output Capacitor Required
  • 8-pin VSSOP Package

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WEBENCH® Designer LM3401

  V in Lower V in Upper
4.5 ≤  V  V ≤ 35.0
环境温度  °C ≤ 125°C
光输出(可选)  流明


与其它产品相比 通用照明LED驱动器 邮件 下载到电子表格中
Part number 立即下单 Input voltage (type) Vin (Min) (V) Vin (Max) (V) Iout (Max) (A) Vout (Min) (V) Vout (Max) (V) Regulated outputs (#) Topology Dimming method Power factor correction (Min) Type Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Vref (V) UVLO thresholds on/off (V) Features Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
LM3401 立即下单 DC/DC     4.5     35     1     0.2     33     1     Buck     PWM         Inductive     100     1500     1.05     0.2     4.3 / 3.8     Adjustable Switch Frequency
-40 to 125     VSSOP | 8     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)