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2-Ch Step-Up LED Driver with Integrated Power Diode

        • Wide input range: 2.7V to 5.5V

        • Highly integrated solution with high efficiency

          • Integrated 30V power diode
          • Integrated 30V power MOSFET
        • Integrated 2-channel current sinks, up to 8-LEDs per string

          • High accuracy up to 30mA/ch
          • 0.6% current matching at 20mA
          • 1.5% current accuracy at 20mA
        • Dual dimming control scheme

          • I2C interface control with 256 steps
          • Wide range PWM Dimming for CABC
          • 100Hz to 100kHz Frequency
          • 0.1%~100% Duty Cycle at 10kHz
        • Input PWM glitch filter

        • I2C interface for various control

        • Programmable current sink ramp up/down time and shape (Exponential/Linear)

        • Selectable 1MHz and 500kHz switching frequency with frequency shift option

        • Programmable OVP (30V/24V), current limit (1A/0.7A) and LX pin slew rate

        • LED open/short protection

        • Pb-free Packages: TQFN33-16, WLCSP-12

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


  • Smartphone/Tablet Backlight

  • PDA/GPS Backlight

Key Electrical Specifications

Vin(Min) Vin(Max) Maximum # of LED  Channel  Channels Control Type Package
2.7V 5.5V 8 I2C, PWM TQFN33-16, WLCSP-12

Typical Application Diagram