LED驱动器
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  • SC441C
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  • SC442
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Semtech SC623

Semtech SC623

Charge Pump LED Driver for 4BL + 400mA Flash + SemWire Interface

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The SC623A is a high efficiency charge pump LED driver using Semtech’s proprietary mAhXLife™ technology. Performance is optimized for use in single-cell Li-ion battery applications.

Features


  • Input supply voltage range — 3.0V to 5.5V
  • Charge pump modes — 1x, 1.5x and 2x
  • Four programmable current sinks with 32 steps from 0.5mA to 25mA
  • Flash LED — 400mA max in flash mode, 250mA max continuous for spotlight
  • Charge pump frequency — 250kHz
  • SemWire™ single wire interface — up to 75kbit/s
  • Backlight current accuracy ±1.5% typical
  • Backlight current matching ±0.5% typical
  • Programmable fade-in/fade-out for main backlight
  • External flash control pin to sync with camera
  • Optional 1s flash time out
  • Automatic sleep mode (LEDs off ) — IQ = 100μA
  • Low shutdown current — 0.1μA (typical)
  • Ultra-thin package — 3mm x 3mm x 0.6mm
  • Fully WEEE and RoHS compliant

Applications


  • Cellular phone backlighting and flash
  • PDA backlighting and flash

Packaging

MLPQ-UT-20 (3 X 3 mm)

Order Codes

  • SC623ULTRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
 
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