1.2MHz,High Efficiency Boost White LED Driver

SL6608

GENERAL DESCRIPTION

  The SL6608 is a step-up converter designed for

driving up to 7 series white LEDs from a single cell

Lithium Ion battery. The SL6608 uses current

mode, fixed frequency architecture to regulate an

LED current, which is measured through an

external current sense resistor. Its low 200mV

feedback voltage reduces power loss and

improves efficiency.

  The SL6608 includes under-voltage lockout,

current limiting and thermal overload protection

preventing damage in the event of an output

overload.

  Optimized operation frequency can meet the

requirement of small LC filters value and low

operation current with high efficiency. Internal soft

start function can reduce the inrush current. Tiny

package type provide the best solution for PCB

space saving and total BOM cost.

FEATURES

 ? High Efficiency: Up to 90%

 ? 1.2MHz Constant Frequency Operation

 ? Integrated internal Power MOSFET

 ? Drives up to 7 Series WLEDs

 ? Low 200mV Feedback Voltage

 ? Soft-start/Dimming with wide Frequency

Range

 ? UVLO, Thermal Shutdown

 ? Internal Current limit

 ? Over Voltage Protection

 ? Small LC Filter

 ? Minimize the External Component

 ? <1μA Shutdown Current

 ? SOT23-6 Package

APPLICATIONS

 ? Camera Flash White LED

 ? Mobile Phone, Smart Phone LED Backlight

 ? PDA LED Backlight

 ? Digital Still Cameras

 ? Camcorder

TYPICAL APPLICATION