型号：LM3401MM

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LM3401MM  规格信息：制造商:Texas Instruments

产品种类:LED照明驱动器

工作温度:+ 125 C

安装风格:SMD/SMT

封装 / 箱体:MSOP

商标:Texas Instruments

高电平输出电流:20 uA

低电平输出电流:5.5 uA

工作温度:- 40 C

Pd-功率耗散:660 mW

LM3401MM

LM3401MM

The LM3401 is a switching controller designed to provideconstant current to high power LEDs. The LM3401 drives anexternal P-MOSFET switch for step-down (Buck) regulators.The LM3401 delivers constant current within ±6% accuracyto a wide variety and number of series connected LEDs. Out-put current is adjusted with an external current sensing resis-tor to drive high power LEDs in excess of 1A.For improved accuracy and efficiency, the LM3401 featuresdual-side hysteresis, very low reference voltage, and shortpropagation delay. A cycle by cycle current limit provides pro-tection against over current and short circuit failures. Addi-tional features include adjustable hysteresis and a CMOScompatible input pin for PWM dimming

Note 1: Absolute Maximum Ratings indicate limits beyond which damage may occur to the device. Operating Ratings indicate conditions for which the device isintended to be functional, but do not guarantee specific performance limits. For guaranteed specifications, see Electrical Characteristics.Note 2: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ_MAX, the junction-to-ambient thermal resistance, θJA,and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PD_MAX = (TJ_MAX - TA)/θJA. Themaximum power dissipation of 0.66W is determined using TA = 25°C, θJA = 151°C/W, and TJ_MAX = 125°C. 

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