Charge Pumps
  • SC627
    • LED Light Management Unit with SemWire™ Interface
  • SC627A
    • LED Light Management Unit with I2C Interface
  • SC630
    • Fixed 3.3V High Output Charge Pump Buck/Boost Regulator
  • SC631
    • Fixed 4.4V Output Charge Pump Regulator
  • SC658
    • Backlight LED Driver for 4 LEDs with SemPulse™ Interface
  • SC657
    • Backlight LED Driver for 5 LEDs with SemPulse™ Interface
  • SC654
    • Light Management Unit for 6 LEDs with SemPulse™ Interface
  • SC652
    • Backlight LED Driver for 5 LEDs with Charge Pump and PWM Control
  • 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 SC652

Semtech SC652

Backlight LED Driver for 5 LEDs with Charge Pump and PWM Control

The SC652 is a high effi ciency 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 fi lter provides
  • DC backlight current (not pulsed)
  • PWM frequency range — 200Hz to 50kHz
  • Five 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 — 2 x 2 x 0.6(mm)
  • Fully WEEE and RoHS compliant

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-14

Order Codes

  • SC652ULTRT: Backlight Driver for 5 LEDs with Charge Pump and PWM Control