PT4102 - Micro Bridge Technology

PT4102 Step-up White LED Driver

The PT4102 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 PT4102 is ideal for driving light emitting diodes (LEDs) whose light intensity is proportional to the current passing through them, not the voltage across the.

Features

APPLICATIONS „ Built-in 40V Power MOSFET „ Drives Up to 8 Series White LEDs from 3.6V „ Up to 87% Efficiency „ 1.2MHz Fixed Switching Frequency „ Low Feedback Voltage:104mV for E-suffix, 88mV for S-suffix. „ PWM or DC Dimming „ Current Limit „ 0.22uF Output Capacitor „ Package: SOT-23-6 and SC-70 „ Cell Phones „ Handheld Computers and PDAs „ Digital Cameras „ Small LCD Displays TYPICAL APPLICATIONS Figure 1. Li-Ion Driver for 4 White LEDs Micro Bridge Technology Co.,Ltd. www.micro-bridge.com Page 1 ORDERING INFORMATION PT4102 Step-up White LED Driver PACKAGES PIN DESCRIPTION Pin N.