LM3401是TI公司的一款LED照明-照明产品，LM3401是用于高功率 LED 驱动的滞后 PFET 控制器，本页介绍了LM3401的产品说明、应用、特性等，并给出了与LM3401相关的TI元器件型号供参考。
LM3401 - 用于高功率 LED 驱动的滞后 PFET 控制器 - LED照明-照明 - LED驱动器 - TI公司（Texas Instruments，德州仪器）
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
