LED Drivers
  • SC445
  • High Efficiency Integrated Driver for 4-Strings of 150mA LEDs
  • SC440
  • High Effi ciency 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 SC440A

Semtech SC440A

High Efficiency Integrated Driver for 6-Strings of 30mA LEDs

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The SC440A is a high-effi ciency 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 42V and a 2A internal power switch.

Features


  • Wide input range 4.5V to 27V
  • 42V maximum output voltage with adjustable OVP for smaller output capacitor
  • Drives up to 72 WLEDs in 6 strings
  • Programmable WLED current for up to 30mA per string
  • 1% string-to-string current matching
  • 2A integrated power switch
  • Up to 91% efficiency
  • 0.2% to 100% PWM dimming
  • Analog dimming
  • 800KHz switching frequency for small external component
  • Open/short LED protection
  • Short LED protection disable
  • <1uA shut-down current
  • Thermal protection
  • 4mm x 4mm x1mm MLPQ-24 package (Pb-free, Halogen free, WEEE & RoHS compliant)

Applications


  • Medium-sized LCD panel
  • Notebook Display
  • White LED Power Supplies
  • Sub-Notebook and Tablet Computer Displays
  • Portable Media Players
  • LCD Monitors
  • Digital Video Cameras

Packaging

  • MLPQ-24

Order Codes

  • SC440AMLTRT: Lead-free, Halogen free, WEEE & RoHS compliant 3000 pcs, Tape And Reel Only
  • SC440AEVB: SC440A Evaluation Board
 
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