LM2751 - 稳压 2X、1.5X 开关电容器白光 LED 驱动器

LM2751是TI德州仪器公司的一款电荷泵（无感应器）产品，LM2751是稳压 2X、1.5X 开关电容器白光 LED 驱动器，本站介绍了LM2751的封装应用图解、特点和优点、功能等，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 - 德州仪器

产品描述

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.

产品特性

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

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