LM3404HVEVAL: 1A @ Vin Max, 6 ~ 75V in

Summary

The LM3404HV circuit and BOM have been designed to provide a constant forward current of 1.0A to a single LED with a forward voltage of approximately 3.7V from an input of 48V ±10%.

Over the input voltage range of 6V to 75V the average LED current, IF, is 1.0A ±10%, the ripple current, ΔiF, will not exceed 400 mAP-P, and the switching frequency is 200 kHz ± 10%.

The LM3404/04HV Evaluation Board includes a female 6-pin SIP, J1, connector as well as two standard 94mil turret connectors for the cathode and anode connections of the LED array. Figure 1 shows the pinout of J1. Solid 18 or 20 gauge wire with about 1 cm of insulation stripped away makes a convenient, solderless connection to J1.

Specifications

Manufacturer	Texas Instruments
Category	Lighting
Sub-Category	LED Drivers - DC In
Eval Board Part Number	LM3404HVEVAL/NOPB-ND
Eval Board Supplier	Texas Instruments
Eval Board	Board not Stocked
Voltage In	6 ~ 75 V
Topology	Step Down
Current Out	1 A
Voltage Out (Max)	Up to Vin (75V Max)
Outputs and Type	1 Non-Isolated
Efficiency @ Conditions	>85%, 6 ~ 14V in, 3.7V @ 1 A >80%, 6 ~ 60V in, 3.7V @ 1 A
Features	Current Limit (Adj. or Fixed) Dimming Control Open Circuit Protection Shutdown, Enable, Standby Thermal Protection
Switching Frequency	250 kHz
Component Count + Extras	10 + 10
Design Author	Texas Instruments
Application / Target Market	Lighting: LED Commercial Lighting Lighting: LED Home Lighting Lighting: LED Signage Lighting: LED Solar Streetlight
Main I.C. Base Part	LM3404HV
Date Created By Author
Date Added To Library	2011-03