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The RT8549L is a high efficiency Boost converter with 4-CH LED driver supporting 60V maximum output voltage. It is designed for LCD panel applications that employs LED as lighting sources. The Boost converter generates a suitable output voltage to drive four LED strings in parallel and supports up to 18 LEDs per string. <p align="justify">The RT8549L supports a wide input voltage range from 4.2V to 24V and provides a SMBus interface to control the LED brightness dimming mode, operating frequency and LED currents. The internal 150m&Omega;, 60V power switch with current-mode control provides high efficiency operation. </p><p align="justify">The RT8549L is available in the WDFN-16L 5x5 package to achieve optimized solution for PCB space.</p>
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  • Wide Operating Input Voltage : 4.2V to 24V
  • Max 60V Output Voltage
  • 3% LED Current Accuracy
  • 2% LED Current Matching
  • Low Drop Output 120mA/0.4V Current Sink
  • SMBus Programs LED Current, Switching Frequency, Dimming Mode
  • LED Current : 22.58mA to 180mA
  • Switching Frequency : 200kHz to 900kHz
  • Dimming Mode : PWM, DC, Mixed-Mode
  • Built-in Input UVP, Output OVP, OCP, and Soft-Start
  • Support LED Hot-plug, Open/Short Detection
  • Low EMI, Low Acoustic Noise
  • 16-Load WDFN Package
  • RoHS Compliant and Halogen Free
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Keyword 1

Keyword 2

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