LED Drivers
  • SC653
    • Charge Pump LED Driver for 4BL + 2LDO + SemPulse Interface
  • SC657
    • Charge Pump LED Driver for 5BL + SemPulse Interface
  • SC658
    • Charge Pump LED Driver for 4BL + SemPulse Interface
  • SC656
    • Charge Pump LED Driver for 7BL + Dual PWM Interfaces
  • SC446
    • High Efficiency Integrated Driver for 3-Strings of 100mA LEDs
  • SC441C
    • High Efficiency Integrated Driver for 4-Strings of 150mA LEDs
  • 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 SC442

Semtech SC442

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

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