DESCRIPTION
The LT®3486 is a dual step-up DC/DC converter specifi cally designed to drive up to 16 White LEDs (8 in series per converter) at constant current from a single Li-Ion cell. Series connection of the LEDs provides identical LED currents resulting in uniform brightness. The two independent converters are capable of driving asymmetric LED strings.

FEATURES
■ Wide (1000:1) PWM Dimming Range with No
   ColorShift
■ Independent Dimming and Shutdown Control of the
   LED Drivers
■ Drives Up to 16 White LEDs at 25mA (8 per Driver)
   from a Single Li-Ion Cell
■ Drives Up to 16 White LEDs at 100mA (8 per Driver)
   from 12V Supply
■ ±3% LED Current Programming Accuracy
■ Open LED Protection: 36V Clamp Voltage
■ Fixed Frequency Operation: Up to 2MHz
■ Wide Input Voltage Range: 2.5V to 24V
■ Low Shutdown Current: ICC < 1µA
■ Overtemperature Protection
■ Available in (5mm × 3mm × 0.75mm) 16-Pin DFN
   and 16-Pin Thermally Enhanced TSSOP Packages

APPLICATIONS
■ Notebook PC Display
■ LED Camera Light for Cell Phones
■ Car Dashboard Lighting
■ Avionics Displays