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6-Ch Step-Up LED Driver with PWM-Control Mixed-Mode Dimming

        • Input voltage range: 2.7V to 5.5V

        • Drive up to 60 LEDs (10S6P)

        • High efficiency LED driver, up to 90%

        • High frequency step-up converter (940kHz)

        • Integrated 40V power MOSFET

        • Integrated 6-channel current sinks

          • Up to 30mA/ch
          • 0.5% Typ. current matching
          • 2.0% Typ current accuracy at 20mA
        • Wide input PWM dimming frequency range

          • 100Hz to 30KHz
        • Programmable Mixed-Mode Dimming controls

          • Mixed analog dimming and PWM dimming
          • Selectable transition point : 25% or 12.5% input PWM duty cycle
          • Selectable output PWM dimming frequency : fixed 22kHz or following input PWM dimming frequency
          • Channel current phase shift in fixed 22kHz output PWM dimming mode
        • Input PWM glitch filter

        • LED open/short protection

        • Adjustable over-voltage protection

        • Cycle-by-cycle inductor current limit (2.5A)

        • 0.1 µA shutdown current

        • Pb-free TQFN33-16 and WLCSP-16 Package

        • -40°C to +85°C Temperature Range


  • Tablet Backlight

  • Netbook/Notebook Backlight

  • Portable media players

Key Electrical Specifications

Vin(Min) Vin(Max) Maximum # of LED  Channel  Channels Control Type Package
2.7V 5.5V 10 6 Dimming via PWM control TSOT23-6, WLCSP-16

Typical Application Diagram