- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：LED 驱动器 - RGB LED 驱动器
- 功能描述：稳压 2X、1.5X 开关电容器白光 LED 驱动器
- 点击这里打开及下载LM2751的技术文档资料
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The LM2751 is a constant frequency switched capacitor charge pump with regulated output voltage options of 4.5V, and 5.0V. Over the input voltage range of 2.8V to 5.5V the LM2751 provides up to 150mA of output current and requires only four low-cost ceramic capacitors.
The LM2751 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or 2. The proper gain for maintaining regulation is chosen so that efficiency is maximized over the input voltage range.
LM2751 uses constant frequency pre-regulation to minimize conducted noise on the input and provide a predictable switching frequency. The switching frequency is programmable to 725kHz, 300kHz, 37kHz, or 9.5kHz.
LM2751 is available in a 10-pin SON No-Pullback Package.
- Regulated Output Options: 4.5V, 5.0V
- Output Voltage Regulated Within 3%
- Peak Efficiency Over 90%
- 150mA (4.5V) or 80mA (5.0V) Output Current Capability
- Input Voltage Range: 2.8V to 5.5V
- Low Input and Output Voltage Ripple
- <1μA Typical Shutdown Current
- Small Solution Size - NO INDUCTOR
- Programmable 725kHz, 300kHz, 37kHz, or 9.5kHz Switching Frequencies
- 10-pin SON No-Pullback Package: 3mm × 3mm × 0.8mm
All trademarks are the property of their respective owners.
- Number of channels (#)
- 1
- LED current per channel (mA)
- 150
- LED configuration
- Parallel, Series, Single
- Program memory
- No
- Programmable ramp control
- No
- Vin (Min) (V)
- 2.8
- Vin (Max) (V)
- 5.5
- Iout (Max) (A)
- 0.15
- Features
- Enable/shutdown, GPIO interface
- Iq (Typ) (mA)
- 1
- Shutdown current (Typ) (uA)
- 0.77
- Operating temperature range (C)
- -40 to 85
- Rating
- Catalog
LM2751的完整型号有：LM2751SD-B/NOPB，以下是这些产品的关键参数及官网采购报价：
LM2751SD-B/NOPB，工作温度：-40 to 85，封装：WSON (DSC)-10，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM2751SD-B/NOPB的批量USD价格：.747（1000+）
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