PA5110: Constant Curr. LED Driver

Features Fast 1.2MHz Switching Frequency High Efficiency:85% Typical The minimum input voltage 2.5 V Drives 7 Series 2 Parallel LED’s with 5V VIN Drives 3 Series 5 Parallel LED’s with 5V VIN Requires Only 0.47uF Output Capacitor Inherently Matched LED Current Over-voltage protection and UVLO function Uses Very Small Inductors SOT23-6 Package

Applications LED series and parallel applications LED Display Panels Backlighting.

• Application Notes
• Block Diagrams
• White Papers
• Evaluation Boards
• Datasheet

General Description

The PA5110 is a white LED constant current driver used for backlighting of digital photo frames or 3 to 5-inch LED screens.

It is a step-up DC/DC converter specifically designed to drive white LED’s at a constant current. It can drive up to fifteen LED’s.

It switches at 1.2MHz and uses minimal external components which provide cost and real estate saving over alternate solutions.

The output capacitor can be as low as 0.47uF, Feedback voltage is 95mV.