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LM3401

現行

適用高功率 LED 驅動器的磁滯 PFET 控制器

產品詳細資料

Input voltage type DC/DC Topology Buck Vin (min) (V) 4.5 Vin (max) (V) 35 Vout (max) (V) 33 Vout (min) (V) 0.2 Iout (max) (A) 1 Iq (typ) (mA) 1.05 Features Adjustable Switch Frequency, Enable/Shutdown Operating temperature range (°C) -40 to 125 Dimming method PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Buck Vin (min) (V) 4.5 Vin (max) (V) 35 Vout (max) (V) 33 Vout (min) (V) 0.2 Iout (max) (A) 1 Iq (typ) (mA) 1.05 Features Adjustable Switch Frequency, Enable/Shutdown Operating temperature range (°C) -40 to 125 Dimming method PWM Number of channels 1 Rating Catalog
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 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

All trademarks are the property of their respective owners.

  • 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

All trademarks are the property of their respective owners.

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.

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.

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技術文件

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類型 標題 日期
* Data sheet LM3401 Hysteretic PFET Controller for High Power LED Drive datasheet (Rev. C) 2013年 5月 2日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
Application note AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013年 5月 3日
EVM User's guide AN-1657 LM3401 Demo Board (Rev. C) 2013年 5月 1日
Application note AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 2013年 4月 23日
User guide LM3401 MR16 Reference Design for Non-Dimming & Dimming LED Application Usr Guide 2012年 1月 27日

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM3401-MR16DEMO — 適合於非調光和調光 LED 應用的 LM3401 MR16 燈泡參考設計

This reference design was based on the released LM3401 evaluation board and associated application note AN-1657. The circuit and BOM was modified to optimize performance in MR16 solutions. A PCB was created that fits into the MR16 cavity. For fast bench set-up, the LM3401 evaluation board can be (...)

使用指南: PDF
TI.com 無法提供
開發板

LM3401EVAL — 用於高功率 LED 驅動的 LM3401 磁滯 PFET 控制器評估模組

The LM3401 is a switching buck regulator derived current source designed to drive a series string of high power, high brightness LEDs. The LM3401 controls an external P-FET, allowing the user to select a power device for the desired level of forward LED current. The LM3401 demo board can supply (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LM3401 PSpice Transient Model

SNVM694.ZIP (57 KB) - PSpice Model
模擬型號

LM3401 TINA-TI Transient Reference Design

SNVMBE7.TSC (2048 KB) - TINA-TI Reference Design
模擬型號

LM3401 TINA-TI Transient Spice Model

SNVMBE6.ZIP (17 KB) - TINA-TI Spice Model
計算工具

LED-CIE1931-COLOR-CALCULATOR Accurately Plot LED Colour from a Power Spectrum (Excel)

Excel spreadsheet outlining LED color calculations performed in the article Accurately Plot LED Colour from a Power Spectrum by Donald Schelle. Includes calculations to plot LED color on a CIE 1931 xyY chart from its LED power spectrum.

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產品
照明 LED 驅動器
LM3401 適用高功率 LED 驅動器的磁滯 PFET 控制器
計算工具

LM3401DESIGN-CALC — LM3401 元件計算機

模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSSOP (DGK) 8 Ultra Librarian

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