This demonstration board highlights the performance of a LM3444 based Flyback LED driver solution that can be used to power a single LED string consisting of 4 to 8 series connected LEDs from an 90 VRMS to 135 VRMS, 60 Hz input power supply. The key performance characteristics under typical operating conditions are summarized in this application note.
This is a two-layer board using the bottom and top layer for component placement. The demonstration board can be modified to adjust the LED forward current, the number of series connected LEDs that are driven and the switching frequency. Refer to the LM3444 datasheet for detailed instructions.
| Manufacturer | Texas Instruments |
|---|---|
| Category | Lighting |
| Sub-Category | LED Drivers - AC / Offline |
| Eval Board |
Board not Stocked
|
| AC Voltage |
115 V
|
| Outputs and Type |
1 Isolated
|
| Current Out |
350 mA
|
| Voltage Out (Max) |
30 V
|
| Efficiency @ Conditions |
>82%, 120V in, 8 LEDs @ 290 mA
>82%, 120V in, 6 LEDs @ 350 mA >80%, 120V in, 4 LEDs @ 500 mA |
| Features |
PFC
Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
79 kHz
|
| Component Count + Extras |
37 + 14
|
| Design Author |
Texas Instruments
|
| Application / Target Market |
Lighting: LED Commercial Lighting
Lighting: LED Home Lighting Lighting: LED Signage |
| Voltage In |
90 ~ 135 VAC
|
| Power Factor | |
| Standard(s) | |
| Main I.C. Base Part |
LM3444
|
| Date Created By Author | |
| Date Added To Library | 2012-02 |
Canada
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