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LM3414 - 产品图解：
LM3414-60W 常见阳极恒流降压 LED 驱动器，需外部 电流感应电阻
LM3414-LED照明-照明-LED驱动器-电源管理
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TI产品 - LM3414介绍

LM3414 - 60W 常见阳极恒流降压 LED 驱动器，无需外部 电流感应电阻

LM3414是TI德州仪器公司的一款LED照明-照明产品，LM3414是60W 常见阳极恒流降压 LED 驱动器，无需外部 电流感应电阻，本站介绍了LM3414的封装应用图解、特点和优点、功能等，并给出了与LM3414相关的TI元器件型号供参考。

LM3414 - 60W 常见阳极恒流降压 LED 驱动器，无需外部 电流感应电阻 - LED照明-照明 - LED驱动器 - 德州仪器

产品特性
  • Supports LED Power up to 60 W (1): 18x 3-W HBLEDs
  • Requires No 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
产品应用
  • High Power LED Drivers
  • Architectural Lighting, Office Troffers
  • Automotive Lighting
  • MR-16 LED Lamps
产品说明

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.

Device Information(2)
PART NUMBERPACKAGEBODY SIZE (NOM)
LM3414, LM3414HVWSON (8)3.00 mm × 3.00 mm
SOIC (8)3.90 mm × 4.89 mm
  • Thermal derating applies according to actual operation conditions.
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