LM3402EVAL: 350mA @ Vin Max, 6 ~ 42V in
Summary
The LM3402 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. (Typical of white, blue, and green LEDs using InGaN technology.)
When powered from a 24V ±5% input the demo board will maintain the average LED current, IF, to within 10% of 350 mA.
Switching frequency for the demo board is 600 kHz ± 10% over the input voltage range of 6V to 42V.
(When using the pin-for-pin compatible LM3402HV the upper bound of input voltage is 75V.)
When powered from a 24V ±5% input the demo board will maintain the average LED current, IF, to within 10% of 350 mA.
Switching frequency for the demo board is 600 kHz ± 10% over the input voltage range of 6V to 42V.
(When using the pin-for-pin compatible LM3402HV the upper bound of input voltage is 75V.)
Specifications
| Manufacturer | Texas Instruments |
|---|---|
| Category | Lighting |
| Sub-Category | LED Drivers - DC In |
| Eval Board Part Number | 296-45740-ND |
| Eval Board Supplier | Texas Instruments |
| Eval Board |
Board not Stocked
|
| Voltage In |
6 ~ 42 V
|
| Topology |
Step Down
|
| Current Out |
350 mA
|
| Voltage Out (Max) |
Up to Vin (42V Max)
|
| Outputs and Type |
1 Non-Isolated
|
| Efficiency @ Conditions |
>85%, 6 ~ 16V in, 3.5V @ 350 mA
>80%, 6 ~ 40V in, 3.5V @ 350 mA |
| Features |
Current Limit (Adj. or Fixed)
Dimming Control Open Circuit Protection Shutdown, Enable, Standby Thermal Protection |
| Switching Frequency |
600 kHz
|
| Component Count + Extras |
9 + 11
|
| Design Author |
Texas Instruments
|
| Application / Target Market | |
| Main I.C. Base Part |
LM3402
|
| Date Created By Author | |
| Date Added To Library | 2011-03 |
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