• SC445
  • 150mA 4-strings高效集成驱动器LED
  • SC440
  • 30mA LED 6-strings高效的集成驱动器
  • SC440A
  • 30mA LED 6-strings高效集成驱动器
  • SC441A
  • 150mA的LED高效集成驱动器4-strings AEC - Q100标准合格
  • SC441C
  • 150mA的LED -高电压输入4-strings高效集成驱动器
  • SC442
  • 10频道,综合效率高120,白色LED驱动器
  • SC443
  • 30mA LED 3-Strings高效集成的升压驱动器
  • SC4505
  • 背光/闪光LED驱动器高效率升压转换器
Semtech SC446

Semtech SC446

100mA的LED 3-strings高效集成驱动器


The SC446 is a high-effciency multiple string WLED driver with an integrated boost converter. It operates over a wide input range from 4.5V to 27V with a maximum output voltage of 36V and a 2.5A internal power switch. It can drive up to thirty WLEDs in 3 strings with current up to 100mA per string.


  • Wide input voltage range from 4.5V to 27V
  • 36V maximum output voltage
  • Drives up to 30 WLEDs in 3 strings
  • Programmable LED current for up to 100mA per
  • +/- 2% string-to-string current matching
  • Up to 90% efficiency
  • Wide 0.2% to 100% PWM dimming range
  • Possible analog dimming
  • Integrated 2.5A power switch
  • 700kHz switching frequency for small size
  • Adjustable OVP for cost-e!ective output cap selection
  • Open/short LED protection
  • Thermal protection with auto-recovery
  • Thermally enhanced TSSOP-16 EDP package
  • Pb Free, Halogen Free, andWEEE/RoHS Compliant


  • Medium-sized LCD panel
  • Notebook Display
  • Automotive Car Navigation Display
  • Sub-Notebook and Tablet Computer Displays
  • Portable Media Players


  • TSSOP-16

Order Codes

  • SC446TETRT
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