Summary
The ZXLD381 is a single cell LED driver designed for applications where step-up voltage conversion from a very low input voltage is required. These applications mainly operate from 1.5V or 1.2V cells. The IC generates constant current pulses that are ideal for driving single or multiple LEDs over a wide range of operating voltages.

FEATUREs
• 85% Efficiency
• User adjustable output current
• Single cell operation (0.9V minimum)
• Low saturation voltage switching
   transistor
• SOT23-3 package
• Available also in Die form
• Simple Application circuit

APPLICATIONs
• LED flashlights and torches
• LED backlights
• White LED driver