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LM3414

現行

不需外部電流感測電阻的 42 V 60 W 通用陽極定電流降壓 LED 驅動器

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同,但引腳輸出與所比較的產品不同
最新 TPS922053 現行 具有電感快速調光和展頻的 65-V、2-A 降壓 LED 驅動器 New device with inductive fast dimming and spread spectrum

產品詳細資料

Input voltage type DC/DC Topology Buck Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (max) (V) 42 Vout (min) (V) 0.2 Iout (max) (A) 1 Iq (typ) (mA) 3.2 Features Adjustable Switch Frequency, Enable/Shutdown, Integrated Switch, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Buck Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (max) (V) 42 Vout (min) (V) 0.2 Iout (max) (A) 1 Iq (typ) (mA) 3.2 Features Adjustable Switch Frequency, Enable/Shutdown, Integrated Switch, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 WSON (NGQ) 8 9 mm² 3 x 3
  • Supports LED Power up to 60 W(1): 18x 3-W
    HBLEDs
  • RequiresNo External Current Sensing Resistor
  • ±3% LED Current Accuracy
  • Up to 96% Efficiency
  • High Contrast Ratio (Minimum Dimming Current
    Pulse Width <10 µS)
  • Integrated Low-Side N-Channel MOSFET
  • Adjustable Constant LED Current From 350 mA to
    1000 mA
  • Support Analog Dimming and Thermal Fold-Back
  • Wide Input Voltage Range:
    • 4.5 V to 42 V (LM3414)
    • 4.5 V to 65 V (LM3414HV)
  • Constant Switching Frequency Adjustable from
    250 kHz to 1000 kHz
  • Thermal Shutdown Protection
  • Power Enhanced SOIC-8 or 3 mm × 3 mm
    WSON-8 Package
  • Supports LED Power up to 60 W(1): 18x 3-W
    HBLEDs
  • RequiresNo External Current Sensing Resistor
  • ±3% LED Current Accuracy
  • Up to 96% Efficiency
  • High Contrast Ratio (Minimum Dimming Current
    Pulse Width <10 µS)
  • Integrated Low-Side N-Channel MOSFET
  • Adjustable Constant LED Current From 350 mA to
    1000 mA
  • Support Analog Dimming and Thermal Fold-Back
  • Wide Input Voltage Range:
    • 4.5 V to 42 V (LM3414)
    • 4.5 V to 65 V (LM3414HV)
  • Constant Switching Frequency Adjustable from
    250 kHz to 1000 kHz
  • Thermal Shutdown Protection
  • Power Enhanced SOIC-8 or 3 mm × 3 mm
    WSON-8 Package

The LM3414 and LM3414HV are 1-A 60-W(1) common anode-capable constant current buck LED drivers. They are suitable for driving single string of 3-W HBLED with up to 96% efficiency. They accept input voltages from 4.5 VDC to 65 VDC and deliver up to 1-A average LED current with ±3% accuracy. The integrated low-side N-channel power MOSFET and current sensing element realize simple and low component count circuitry, as no bootstrapping capacitor and external current-sensing resistor are required. An external small-signal resistor to ground provides very fine LED current adjustment, analog dimming, and thermal fold-back functions.

Constant switching frequency operation eases EMI. No external loop compensation network is needed. The proprietary Pulse-Level-Modulation (PLM) control method benefits in high conversion efficiency and true average LED current regulation. Fast response time realizes fine LED current pulse fulfilling the 240 Hz 256-step dimming resolution requirement for general lighting.

The LM3414 and LM3414HV are available in SOIC-8 and 3 mm × 3 mm WSON-8 packages.

The LM3414 and LM3414HV are 1-A 60-W(1) common anode-capable constant current buck LED drivers. They are suitable for driving single string of 3-W HBLED with up to 96% efficiency. They accept input voltages from 4.5 VDC to 65 VDC and deliver up to 1-A average LED current with ±3% accuracy. The integrated low-side N-channel power MOSFET and current sensing element realize simple and low component count circuitry, as no bootstrapping capacitor and external current-sensing resistor are required. An external small-signal resistor to ground provides very fine LED current adjustment, analog dimming, and thermal fold-back functions.

Constant switching frequency operation eases EMI. No external loop compensation network is needed. The proprietary Pulse-Level-Modulation (PLM) control method benefits in high conversion efficiency and true average LED current regulation. Fast response time realizes fine LED current pulse fulfilling the 240 Hz 256-step dimming resolution requirement for general lighting.

The LM3414 and LM3414HV are available in SOIC-8 and 3 mm × 3 mm WSON-8 packages.

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技術文件

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類型 標題 日期
* Data sheet LM3414/HV 1-A, 60-W Common Anode-Capable Constant Current Buck LED Driver Requires No External Current Sensing Resistor datasheet (Rev. F) PDF | HTML 2015年 12月 3日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Technical article Color the world with what’s next in RGBW LED light source technology – part 1 PDF | HTML 2017年 8月 3日
Application note AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 2013年 5月 3日

設計與開發

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開發板

LM3414HVMREVAL — LM3414 LM3414HV 1A 65V LED 驅動器 PSOP-8 評估板

The LM3414HV is a 65V floating buck LED driver that designed to drive up to 18 pieces of serial High Brightness LEDs (HBLEDs) with up to 1000 mA LED forward current. With the incorporation of the proprietary Pulse-Level-Modulation (PLM) technology, the LM3414HV requires no external current sensing (...)

使用指南: PDF
TI.com 無法提供
開發板

LM3414HVSDEVAL — LM3414 LM3414HV 1A 65V LED 驅動器 LLP-8 評估板

The LM3414HV is a 65V floating buck LED driver that designed to drive up to 18 pieces of serial High Brightness LEDs (HBLEDs) with up to 1000 mA LED forward current. With the incorporation of the proprietary Pulse-Level-Modulation (PLM) technology, the LM3414HV requires no external current sensing (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LM3414 TINA-TI Transient Dimming Reference Design

SNVM113.TSC (782 KB) - TINA-TI Reference Design
模擬型號

LM3414 TINA-TI Transient Line Transient Reference Design

SNVM114.TSC (773 KB) - TINA-TI Reference Design
模擬型號

LM3414 TINA-TI Transient Spice Model

SNVM112.ZIP (63 KB) - TINA-TI Spice Model
模擬型號

LM3414 TINA-TI Transient Startup Reference Design

SNVM111.TSC (790 KB) - TINA-TI Reference Design
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
HSOIC (DDA) 8 Ultra Librarian
WSON (NGQ) 8 Ultra Librarian

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