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
  • SC446
    • High Efficiency Integrated Driver for 3-Strings of 100mA LEDs
Semtech SC4541

Semtech SC4541

High Frequency LED Driver with Integrated Schottky and Simple Interconnect

The SC4541 is a fully integrated, high voltage boost (step-up) and buck (step-down) LED driver. The input voltage range is 2.9V to 22V with output voltage up to 25V. The device is capable of driving up to 7 white LEDs.

Features


  • VIN Range — 2.9V to 22V
  • VOUT Range — Up to 25V
  • IOUT Range:
  • Up to 100mA (Boost)
  • Up to 200mA (Buck)
  • Drives Up to 7 Series WLEDs (Boost)
  • Drives Up to 5 Series WLEDs (Buck)
  • Integrated Schottky Rectifier
  • Single-Wire LED Connect
  • Current Mode Control
  • Frequency — 2.0MHz
  • No External Compensation
  • Direct PWM Dimming
  • 100:1 Range at 500Hz
  • Open-LED Protection — 27V
  • Low Shutdown Current < 1μA
  • Package Options:
  • Low Profile MLPD-UT, 6-pin 2x2 x0.6(mm)
  • SOT23, 6-pin 2.9x2.8 x1.45(mm)
  • Lead-free, Halogen-Free and WeEE/RoHS Compliant

Applications


  • Keypad Illumination
  • DSC and DSLR Display Backlight
  • Cellular Handsets
  • Automotive Lighting

Packaging

  • MLPD-UT, 6-pin 2x2 x0.6(mm)
  • SOT23, 6-pin 2.9x2.8 x1.45(mm)

Order Codes

  • SC4541SKTRT - Lead-free, Halogen-Free and WeEE/RoHS Compliant
  • SC4541ULTRT -  Lead-free, Halogen-Free and WeEE/RoHS Compliant