Switching Regulators
  • SC120
    • Low Voltage Synchronous Boost Converter
  • SC183C
    • 2.5MHz, 2A Synchronous Step-Down Switching Regulator
  • SC189
    • 2.5MHz, 1.5A Synchronous Step Down Switching Regulator in MLPD2X2
  • SC417
    • 10A Integrated FET Regulator with Programmable LDO and Selectable Ultrasonic Power-Save
  • SC427
    • 10A Integrated FET Regulator with Programmable LDO and Selectable Regular Power-Save
  • SC561
    • Dual Output Low Noise LDO Linear Regulator
  • SC810
    • Single Input/Single Mode Single-cell Li-ion Battery Charger
  • SCDAS4F
    • Standard Recovery, High Current Center Tap and Doubler Rectifier Assemblies
Semtech SC441

Semtech SC441

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

The SC441 is a high-efficiency multiple string white LED driver with an integrated boost converter. It operates over a wide input range from 4.5V to 21V with a maximum output voltage of 36V and a 2.5A internal power switch. It can drive up to forty WLEDs in 4 strings with current up to 150mA per string.

To request a complete datasheet, email: salesinfo@semtech.com.

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Features

  • Wide input voltage range from 4.5V to 21V
  • 36V 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
  • Possible analog dimming
  • Integrated 2.5A power switch
  • 800kHz switching frequency for small size
  • Adjustable OVP for cost-effective output cap selection
  • Open/short LED protection
  • Thermal protection with auto-recovery
  • Thermally enhanced TSSOP-20 EDP package
  • Fully WEEE and RoHS compliant

Applications

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

Packaging

TSSOP20E

Order Codes

  • SC441TETRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel