This circuit is designed to drive a single InGaN UV LED (Vf = 3.8V) at a forward current of 420 mA with a peak-to-peak ripple current of 80 mA or less.
The input is 6V to 42V, with LED current and switching frequency (400 kHz) optimized at Vin = 13.8V.
This circuit is rated to withstand input voltage surges up to 42V.
| Manufacturer | Texas Instruments |
|---|---|
| Category | Lighting |
| Sub-Category | LED Drivers - DC In |
| Eval Board |
Board not Stocked
|
| Voltage In |
6 ~ 42 V
|
| Topology |
Step Down
|
| Current Out |
420 mA
|
| Voltage Out (Max) |
3.8 V
|
| Outputs and Type |
1 Non-Isolated
|
| Efficiency @ Conditions | |
| Features |
Current Limit (Adj. or Fixed)
Dimming Control Open Circuit Protection Shutdown, Enable, Standby Thermal Protection |
| Switching Frequency | |
| Component Count + Extras |
9 + 0
|
| 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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