LED Drivers
  • SC440
  • High Effi ciency Integrated Driver for 6-Strings of 30mA LEDs
  • SC440A
  • High Efficiency Integrated Driver for 6-Strings of 30mA LEDs
  • SC441A
  • High Efficiency Integrated Driver for 4-Strings of 150mA LEDs - AEC-Q100 Qualified
  • SC441C
  • High Efficiency Integrated Driver for 4-Strings of 150mA LEDs - High Voltage Input
  • SC442
  • 10-Channel, Integrated, High Efficiency 120 White LED Driver
  • SC443
  • High Efficiency Integrated Boost Driver for 3-Strings of 30mA LEDs
  • SC446
  • High Efficiency Integrated Driver for 3-Strings of 100mA LEDs
  • SC4505
  • High Efficiency Boost Converter for Backlight / Flash LED Driver
Semtech SC445

Semtech SC445

High Efficiency Integrated Driver for 4-Strings of 150mA LEDs

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The SC445 is a high-efficiency multiple string WLED driver with an integrated boost converter.

Features


  • Wide input voltage range from 4.5V to 27V
  • Sustain fast Vin fluctuation up to 5v/μs
  • 42V maximum output voltage
  • Drives up to 40 WLEDs in 4 strings
  • Programmable LED current for up to 150mA per string
  • +/- 2% string-to-string current matching
  • Up to 90% efficiency
  • Wide 0.2% to 100% PWM dimming range
  • Enable analog dimming
  • Integrated 3.0A power switch
  • 700KHz switching frequency for small size
  • Adjustable OVP for cost-effective output cap selection
  • Open/short LED protection
  • Short LED protection enable/disable
  • Thermal protection with auto-recovery
  • Thermally enhanced TSSOP-20 EDP package
  • Lead-free, Halogen-Free and WeEE/RoHS Compliant

Applications


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

Packaging

  • TSSOP-20 EDP

Order Codes

  • SC445TETRT - Lead-free package only, device is WEEE/RoHS compliant and halogen-free
 
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