LM3402HVEVAL: 350mA @ Vin Max, 6 ~ 75V in

Summary

The LM3402HV circuit and BOM have been designed to provide a constant forward current of 350 mA to a single LED with a forward voltage of approximately 3.5V.

Ripple current will not exceed 70 mA peak-to-peak. Switching frequency for the demo board is 250 kHz ±10% over the input voltage range of 6V to 75V.

It can maintain regulated current through any number of LEDs as long as the combined forward voltage of the array does not exceed VO(MAX).

Specifications

Manufacturer Texas Instruments
Category Lighting
Sub-Category LED Drivers - DC In
Eval Board Part Number LM3402HVEVAL/NOPB-ND
Eval Board Supplier Texas Instruments
Eval Board Board not Stocked
Voltage In 6 ~ 75 V
Topology Step Down
Current Out 350 mA
Voltage Out (Max) Up to Vin (75V Max)
Outputs and Type 1 Non-Isolated
Efficiency @ Conditions >80%, 6 ~ 16V in, 3.5V @ 350 mA
>70%, 6 ~ 65V in, 3.5V @ 350 mA
Features Current Limit (Adj. or Fixed)
Dimming Control
Open Circuit Protection
Shutdown, Enable, Standby
Thermal Protection
Switching Frequency 250 kHz
Component Count + Extras 10 + 11
Design Author Texas Instruments
Application / Target Market
Main I.C. Base Part LM3402HV
Date Created By Author
Date Added To Library 2011-03

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Support Documents & Media

LM3402/02HV - User Guide LM3402 - Datasheet AN-1149 - Layout Guidelines for SMPS Ultra Librarian Software:CAD Symbols and Footprints (Zip File) TI's CAD/CAE Symbols and Footprint Search

Media

LM3402HV_Schematic.JPG LM3402_Board.JPG