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The LED2000 is an 850 kHz fixed switching frequency monolithic step-down DC-DC converter designed to operate as precise constant current source with an adjustable current capability up to 3 A DC. The embedded PWM dimming circuitry features LED brightness control. The regulated output current is set connecting a sensing resistor to the feedback pin. The embedded synchronous rectification and the 100 mV typical RSENSEvoltage drop enhance the efficiency performance. The size of the overall application is minimized thanks to the high switching frequency and ceramic output capacitor compatibility. The device is fully protected against thermal overheating, overcurrent and output short-circuit. The LED2000 is available in VFQFPN 4 mm x 4 mm 8-lead, and standard SO8 package.
主要特性
- 3.0 V to 18 V operating input voltage range
- 850 kHz fixed switching frequency
- 100 mV typ. current sense voltage drop
- PWM dimming
- ± 7% output current accuracy
- Synchronous rectification
- 95 mΩ HS / 69 mΩ LS typical RDS(on)
- Peak current mode architecture
- Embedded compensation network
- Internal current limiting
- Ceramic output capacitor compliant
- Thermal shutdown
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评估工具
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Picture 产品型号 制造商 描述 
STEVAL-ILL051V1 -- 3 A HB LED driver with dimming function based on the LED2000 in an SO-8 Batwing package 
STEVAL-ILL051V2 -- 3 A HB LED driver with dimming function based on the LED2000 in a QFN package 产品型号3 A HB LED driver with dimming function based on the LED2000 in an SO-8 Batwing package
3 A HB LED driver with dimming function based on the LED2000 in a QFN package
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| 产品型号 | 供货状态 | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| LED2000DR | 批量生产 | SO-8 | 工业 | Ecopack2 | |
| LED2000PUR | 批量生产 | VFDFPN 8 4x4x1.0 | 工业 | Ecopack2 | |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持 。
