LM3429BSTEVAL: 1A @ 42V Max, 10 ~ 26V in

Summary

This evaluation board showcases the LM3429 NFET controller used with a boost current regulator. It is designed to drive 9 to 12 LEDs at a maximum average LED current of 1A from a DC input voltage of 10 to 26V.

The evaluation board showcases most features of the LM3429 including PWM dimming, overvoltage protection and input under-voltage lockout. It also has a right angle connector (J7) which can mate with an external LED load board allowing for the LEDs to be mounted close to the driver. Alternatively, the LED+ and LED- banana jacks can be used to connect the LED load.

The boost circuit can be easily redesigned for different specifications by changing only a few components (see the Alternate Designs section found at the end of this application note).

Specifications

Manufacturer Texas Instruments
Category Lighting
Sub-Category LED Drivers - DC In
Eval Board Part Number LM3429BSTEVAL/NOPB-ND
Eval Board Supplier Texas Instruments
Eval Board Board not Stocked
Voltage In 10 ~ 26 V
Topology Step Up
Current Out 1 A
Voltage Out (Max) 42 V
Outputs and Type 1 Non-Isolated
Efficiency @ Conditions >93%, 13 ~ 26V in, 9 LEDs @ 1 A
Features Dimming Control
Over Voltage Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 700 kHz
Component Count + Extras 33 + 12
Design Author Texas Instruments
Application / Target Market Automotive
Lighting: LED Signage
Main I.C. Base Part LM3429
Date Created By Author
Date Added To Library 2011-03

Support Documents & Media

LM3429 - Datasheet LM3429BSTEVAL - User Guide - App Note AN-1986 Ultra Librarian Software:CAD Symbols and Footprints (Zip File) TI's CAD/CAE Symbols and Footprint Search

Media

LM3429BSTEVAL_Schematic.JPG LM3429BSTEVAL_Board.jpg LM3429BSTEVAL_Chart.JPG