PT4103 Datasheet (Powtech) - White LED Step-Up Converter

PT4103, White LED Step-Up Converter

The PT4103 is a step-up DC/DC converter designed for driving up to 8 white LEDs in series from a single cell Lithium Ion battery with constant current.

Because it directly regulates output current, the PT4103 is ideal for driving light emitting diodes (LEDs) whose light intensity is proportional to

PT4103 Features

* z z z z z z z z Drives Up to 5 Series White LEDs from 2.5V Drives Up to 8 Series White LEDs from 3.6V Up to 87% Efficiency 1.2MHz Fixed Switching Frequency Low 104mV Feedback Voltage Open Load Shutdown Soft Start/PWM Dimming SOT23-6 Packages APPLICATIONS z z z z Cell Phones Handheld Computers and P