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 NUMBER	PACKAGE	BODY SIZE (NOM)
LM3414, LM3414HV	WSON (8)	3.00 mm × 3.00 mm
LM3414, LM3414HV	SOIC (8)	3.90 mm × 4.89 mm

Thermal derating applies according to actual operation conditions.

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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 - 60W 常见阳极恒流降压 LED 驱动器，无需外部电流感应电阻