LM2707 Datasheet - National Semiconductor

LM2707, Inductive-Boost Series LED Driver

LM2707 Inductive-Boost Series LED Driver with Programmable Oscillator Frequency February 2005 LM2707 Inductive-Boost Series LED Driver with Programm.
The LM2707 is a magnetic boost regulator specifically designed for white LED drive applications.

Features

* 18V output capability, PFM regulation, and a high-current switching transistor (400mA peak). These characteristics allow the part to drive a series string of 2-to-4 LEDs with forward currents between 0 and 40mA. LED brightness can be adjusted dynamically simply by applying a PWM signal to the enable

Applications

* Tightly regulated LED currents, exceptional LED brightness uniformity, and very high LED-drive power efficiency ( > 80%) can all be achieved by stacking the LEDs in series between the www. DataSheet4U. com LM2707 output and the low-voltage feedback pin (0.515V). The LM2707 requires only a few small e

LM2707_NationalSemiconductor.pdf