RD-134: 1A single LED Driver, 9V Battery

Summary

This demonstration circuit is designed to drive a single Seoul Semiconductor Z-Power P4 LED at a forward current of 1A ± 10% with a peak-to-peak ripple current of 200 mA or less. The expected forward voltage is 3.8V. The input is a 9V alkaline battery. Switching frequency is 700 kHz ± 20%.

Specifications

Manufacturer Texas Instruments
Category Lighting
Sub-Category LED Drivers - DC In
Eval Board Board not Stocked
Voltage In 8.1 ~ 9.9 V
Topology Step Down
Current Out 1 A
Voltage Out (Max) 3.8 V
Outputs and Type 1 Non-Isolated
Efficiency @ Conditions - Not Given
Features Current Limit (Adj. or Fixed)
No Output Capacitors
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 700 kHz
Component Count + Extras 16 + 0
Design Author Texas Instruments
Application / Target Market Flashlight / Torch
Main I.C. Base Part LM3404
Date Created By Author
Date Added To Library 2011-03

Support Documents & Media

LM3404/LM3404HV - Datasheet RD-134 - Reference Design Ultra Librarian Software:CAD Symbols and Footprints (Zip File) TI's CAD/CAE Symbols and Footprint Search

Media

RD_134_Schematic.JPG