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 SC656

Semtech SC656

Charge Pump LED Driver for 7BL + Dual PWM Interfaces

The SC656 is a high efficiency charge pump LED driver using Semtech’s proprietary charge pump technology. Performance is optimized for use in single-cell Li-ion battery applications.

Features


  • Input supply voltage range — 2.9V to 5.5V
  • Charge pump modes — 1x, 1.5x and 2x
  • PWM dimming control with low pass filter provides
  • DC backlight current (not pulsed)
  • Two independently configurable backlight banks
  • PWM frequency range — 200Hz to 50kHz
  • Seven adjustable current sinks — 500μA to 25mA
  • Backlight current accuracy ±1.5% typical
  • Backlight current matching ±0.5% typical
  • LED float detection
  • Charge pump frequency — 250kHz
  • Low shutdown current — 0.1μA typical
  • Ultra-thin package — 3 x 3 x 0.6(mm)
  • Fully WEEE and RoHS compliant, and Halogen free.

Applications


  • Cellular phones, smart phones, and PDAs
  • LCD display modules
  • Portable media players
  • Digital cameras
  • Personal navigation devices
  • Display/keypad backlighting and LED indicators

Packaging

MLPQ-UT-20

Order Codes

  • SC656ULTRT: Lead Free, WEEE and RoHS Compliant, Halogen Free, 3,000 pcs, Tape and Reel Only