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The STEVAL-LLL004V1 digitally controlled constant current LED driver reference design features a PFC stage and two DC-DC converters designed to work in transition mode (TM) for optimal efficiency.
The LED driver can deliver 75 W output power and implements both analog and digital techniques for flicker free dimming down to 0.5% of the maximum brightness level. The board features high efficiency, a very high power factor above 0.97, and a low THD across wide input voltage and load conditions, thanks to the high performance ST power products and the advanced algorithms running on the 32-bit STM32F0 microcontroller.
Key Features
- Wide input voltage range 85 – 265 VAC
- Transition Mode PFC
- Two constant current outputs working in transition mode based on different topologies:
- Buck topology
- Inverse buck topology
- Output current: 500 mA ±2.5%
- Number of LEDs connected at output: 16 – 24 white LEDs (3.3 V each)
- PFC > 0.97 and THD < 20% at full load with input voltage 85-265 VAC
- Peak Efficiency at maximum load ≅ 90%
- Comprehensive safety protections:
- Open/no-load circuit protection
- Short-/overload circuit protection
- Soft start implementation
- LED dimming range: 0.5% to 100%
- Analog dimming
- Digital dimming
- Dimming control options:
- Push button
- 0-10 V input
- Meets EN55022 Class B
- WEEE and RoHS compliant
软件
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Picture Part number 制造商 描述 
STSW-LLL004FW ST 75 W digitally controlled constant current HB LED driver 产品型号75 W digitally controlled constant current HB LED driver
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| 产品型号 | 供货状态 | 封装 | 等级规格 | 符合RoHS级别 | WEEE Compliant | Material Declaration** |
|---|---|---|---|---|---|---|
| STEVAL-LLL004V1 |
批量生产
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CARD | 工业 | Ecopack2 | Yes |
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STEVAL-LLL004V1
Package:
CARDMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
