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