L4973 3.5 A Switching Regulator
This board was designed to drive super highbrightness multicolor RGB LEDs with current up to 700 mA per LED. The LED brightness and color are very easily changed by potentiometers, and an automatic color-change mode continuously modulates the color of the LED to generate multicolor light. A LED over-temperature protection is designed on this board, so the power delivered to the LED can be automatically limited to prevent LED overheating.
The STEVAL-ILL009V1 is a motherboard assembled without LEDs. To evaluate light effect features, it is necessary to order a load board.
Two load boards are available for easy performance evaluation. The first with a OSTAR projection module has ordering code STEVALILL009V3, and the second with Golden Dragon LEDs has ordering code STEVAL-ILL009V4
技术特性
- Different LEDs as a load can be used
- 3 A at 4 V DC/DC converter using L4973D3 for user-friendly input (8 - 30 V)
- Red, green, blue individual tuning
- 64 levels of brightness for each LED with software color control
- LED temperature limit set by software
- SW start up implemented (200 ms)
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功能框图
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L4973 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| L4973V3.3 |
Active |
|
1000 |
PDIP 18 |
Tube |
|
|
| L4973D3.3-013TR |
Active |
|
1000 |
SO-20 |
Tape And Reel |
|
|
| L4973D3.3 |
Active |
|
1000 |
SO-20 |
Tube |
|
|
| L4973D5.1 |
Active |
|
1000 |
SO-20 |
Tube |
|
|
| L4973V5.1 |
Active |
|
1000 |
PDIP 18 |
Tube |
|
|
| L4973D5.1-013TR |
Active |
|
1000 |
SO-20 |
Tape And Reel |
|
|
DATASHEET
| 描述 |
版本 |
大小 |
| L4973 : 3.5 A step down switching regulator |
18 |
638KB |
DATA BRIEF
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN938: Designing with L4973, 3.5 A high efficiency DC-DC converter |
10 |
1742KB |
| AN1126: Current sharing of the L4973 in a multiphase application |
1 |
193KB |
| AN1891: Application ideas: driving LEDs using L497x, L597x, L692x DC-DC converters families |
2 |
301KB |
DESIGN NOTES
| 描述 |
版本 |
大小 |
| DN0011: ST1S03 alternative topology: Using a buck in a negative buck-boost configuration |
1.0 |
360KB |
SCHEMATIC PACKS
| 描述 |
版本 |
大小 |
| Board Schematic |
1.0 |
8KB |
