Texas Instruments LM27761 Low-Noise Regulated Voltage Inverter

Texas Instruments LM27761 Low-Noise 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 the application solution to provide up to 250mA of output current. The regulated output of the device is adjustable between −1.5V and −5V. The LM27761 operates at a 2MHz (typical) switching frequency to reduce output resistance and voltage ripple. The LM27761 has an operating current of only 370µA and a 7µA typical shutdown current. This provides ideal performance when driving power amplifiers, DAC bias rails, and other high-current, low-noise voltage applications.