LM2787 - 采用微型 SMD 封装的低噪声稳压开关电容器电压反向器

LM2787是TI德州仪器公司的一款电荷泵（无感应器）产品，LM2787是采用微型 SMD 封装的低噪声稳压开关电容器电压反向器，本站介绍了LM2787的封装应用图解、特点和优点、功能等，并给出了与LM2787相关的TI元器件型号供参考。

LM2787 - 采用微型 SMD 封装的低噪声稳压开关电容器电压反向器 - 电荷泵（无感应器） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM2787 CMOS Negative Regulated Switched Capacitor Voltage Inverter delivers a very low noise adjustable output for an input voltage in the range of +2.7V to +5.5V. Four low cost capacitors are used in this circuit to provide up to 10mA of output current. The regulated output for the LM2787 is adjustable between −1.5V and −5.2V. The LM2787 operates at 260 kHz (typical) switching frequency to reduce output resistance and voltage ripple. With an operating current of only 400 µA (charge pump power efficiency greater than 90% with most loads) and 0.05 µA typical shutdown current, the LM2787 provides ideal performance for cellular phone power amplifier bias and other low current, low noise negative voltage needs. The device comes in small 8-Bump DSBGA and thin DSBGA packages.

产品特性

Inverts and Regulates the Input Supply Voltage
Small 8-Bump DSBGA and Thin DSBGA Packages
91% Typical Charge Pump Power Efficiency at 10mA
Low Output Ripple
Shutdown Lowers Quiescent Current to 0.05 µA (Typical)

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