LED Drivers
  • SC5014A
    • High Efficiency 2-Channel HB LED Driver with I2C Interface and Direct PWM Dimming
  • SC5014
    • High Efficiency 4-Channel HB LED Driver with I2C Interface and Phase-Shifted PWM Dimming
  • SC5010H
    • High Efficiency 8-Channel LED Driver with I2C Interface and Phase-Shifted PWM Dimming
  • SC5010
    • High Efficiency 8-Channel LED Driver with I2C Interface and Phase-Shifted PWM Dimming
  • SC441D
    • High Efficiency Integrated Driver for 4-Strings of 150mA LEDs
  • SC658
    • Charge Pump LED Driver for 4BL + SemPulse Interface
  • SC656
    • Charge Pump LED Driver for 7BL + Dual PWM Interfaces
  • SC654
    • Charge Pump LED Driver for 6BL + SemPulse Interface
Semtech SC443

Semtech SC443

High Efficiency Integrated Boost Driver for 3-Strings of 30mA LEDs

The SC443 is a high-efficiency 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 1A internal power switch.

Features


  • Wide input voltage range from 4.5V to 21V
  • 42V maximum operating output voltage
  • Programmable LED current for up to 30mA per string
  • +/- 1% typical string-to-string current matching
  • Greater than 90% efficiency
  • Wide 0.4% to 100% PWM dimming range
  • Integrated 1A power switch
  • Programmable switching frequency for small size
  • Low current sense voltage for high efficiency
  • Adjustable OVP for cost-effective output cap
    selection
  • LED open circuit protection
  • Thermal protection with auto-recovery
  • 3mm × 3mm ×0.6mm MLP-UT-16 lead-free package (WEEE and RoHS compliant)

Applications


  • Small to Medium Size LCD Panel
  • Notebook Display
  • White LED Power Supplies
  • Sub-Notebook and Tablet Computer Displays
  • Portable Media Players
  • LCD Monitors
  • Digital Video Cameras

Packaging

MLP-UT-16 (3x3 mm)

Order Codes

  • SC443ULTRT: High Efficiency Integrated Boost Driver for 3-Strings of 30mA LEDs
  • SC443EVB: SC443 Evaluation Board