LM2751是TI公司的一款电荷泵（无感应器）产品，LM2751是稳压 2X、1.5X 开关电容器白光 LED 驱动器，本页介绍了LM2751的产品说明、应用、特性等，并给出了与LM2751相关的TI元器件型号供参考。
LM2751 - 稳压 2X、1.5X 开关电容器白光 LED 驱动器 - 电荷泵（无感应器） - DC/DC开关稳压器 - TI公司（Texas Instruments，德州仪器）
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
