LED Drivers
  • SC668
    • 8 LED Light Management Unit Automatic Dropout Prevention , Ambient Light Sense Input, PWM Dimming, and 4 LDOs
  • SC667
    • 7 LED Light Management Unit Automatic Dropout Prevention, Ambient Light Sense Input, PWM Dimming, and 4 LDOs
  • SC662
    • Backlight Driver for 6 LEDs with SemPulse® Interface
  • SC657
    • Charge Pump LED Driver for 5BL + SemPulse Interface
  • SC653
    • Charge Pump LED Driver for 4BL + 2LDO + SemPulse Interface
  • 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
  • SC4541
    • High Frequency LED Driver with Integrated Schottky and Simple Interconnect
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 27V
  • 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