• SC445
  • 150mA 4-strings高效集成驱动器LED
  • SC440
  • 30mA LED 6-strings高效的集成驱动器
  • SC440A
  • 30mA LED 6-strings高效集成驱动器
  • SC441A
  • 150mA的LED高效集成驱动器4-strings AEC - Q100标准合格
  • SC441C
  • 150mA的LED -高电压输入4-strings高效集成驱动器
  • SC443
  • 30mA LED 3-Strings高效集成的升压驱动器
  • SC446
  • 100mA的LED 3-strings高效集成驱动器
  • SC4505
  • 背光/闪光LED驱动器高效率升压转换器
Semtech SC442

Semtech SC442



The SC442 is a 10-channel, high efficiency integrated step-up (boost) driver IC capable of powering up to 120 WLEDs. The device has a wide input voltage of 4.5V to 21V with no internal regulator or bypass capacitor required. The wide input range, up to 42V output voltage and flexible implementation make it the ideal LED backlight driver solution for medium to large LCD displays.

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


  • Wide input voltage range from 4.5V to 21V
  • 42V maximum operating output voltage
  • Programmable LED current up to 30mA per string
  • +/- 1% current matching
  • Integrated 3A switch
  • Low current sink voltage
  • Up to 91% efficiency
  • Flexible LED configurations
    • Mismatched LED channels
    • Disable individual channel(s)
    • Parallel channels for high LED current
  • PWM dimming capability
    • Up to 50kHz dimming frequency
    • >500:1 dimming range
  • Switching frequency: 500kHz - 1MHz
  • Parallel device operation with Sync Pin
  • Protection features:
    • Adjustable OVP
    • Cycle-by-cycle current limit
    • LED short channel with disable /Open channnel
    • Over-Temperature protection
  • MLPQ-28 lead-free package (WEEE and RoHS compliant), 4x4mm x 0.6mm


  • Automotive LCD Backlighting
  • Desktop monitors
  • Notebook PCs
  • Portable TVs


  • MLPQ-UT28

Order Codes

  • SC442ULTRT
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