LM3407 LED Driver

National Semiconductor's 350 mA, constant current output floating buck switching converter for high power LEDs

Image of Texas Instruments' LM3407 LED Driver National Semiconductor's LM3407 is a constant current output floating buck switching converter designed to provide constant current to high power LEDs. The device is ideal for automotive, industrial and general lighting applications. The LM3407 has an integrated power N-MOSFET that makes the application solution compact and simple to implement. An external 1% thick-film resistor allows the converters output voltage to adjust as needed to deliver constant current within 10% accuracy, to a serially connected LED string of varying number and type. Converter switching frequency is adjustable from 300 kHz to 1 MHz. The LM3407 features a dimming input to enable LED brightness control by Pulse Width Modulation (PWM). Additionally, a separate enable pin allows for low power shutdown.

Features
  • Input operating range 4.5 V to 30 V
  • Output voltage range: 0.1 VIN to 0.9 VIN
  • Accurate constant current output
  • Independent device enable (CMOS compatible) and PWM dimming control
  • Converter switching frequency adjustable from 300 kHz to 1 MHz
Applications
  • LED driver
  • Constant current source
  • Automotive lighting
  • General illumination
  • Industrial lighting

LED Driver

图片制造商零件编号描述可供货数量价格
IC LED DRVR RGLTR PWM 8HVSSOPLM3407MY/NOPBIC LED DRVR RGLTR PWM 8HVSSOP2651 - 立即发货$9.69查看详情
发布日期: 2009-09-08