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
  • SC440A
  • High Efficiency 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
  • 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 SC442

Semtech SC442

10-Channel, Integrated, High Efficiency 120 White LED Driver

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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.

Features


  • 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

Applications


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

Packaging

  • MLPQ-UT28

Order Codes

  • SC442ULTRT
 
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