LM3502 Datasheet - National Semiconductor

LM3502 Step-Up Converter

The LM3502 is a white LED driver for lighting applications. For dual display or large single white LED string backlighting applications, the LM3502 provides a complete solution. The LM3502 contains two internal white LED current bypass FET(Field Effect Transitor) switches that are ideal for controll.

LM3502 Features

* n Drive up to 4, 6, 8 or 10 white LEDs for Dual Display Backlighting n > 80% efficiency n Output Voltage Options: 16V , 25V , 35V, and 44V n Input Under-Voltage Protection n Internal Soft Start Eliminating Inrush Current n 1 MHz Constant Switching Frequency n Wide Input Voltage: 2.5V to 5.5V n Small

LM3502_NationalSemiconductor.pdf