The LM27761 low-noise regulated switched-capacitor voltage inverter delivers a very
low-noise adjustable output for an input voltage in the range of 2.7 V to 5.5 V. Four low-cost
capacitors are used in the application solution to provide up to 250 mA of output current. The
regulated output for the device is adjustable between −1.5 V and −5 V. The LM27761 operates at
2-MHz (typical) switching frequency to reduce output resistance and voltage ripple. With an
operating current of only 370 µA (charge-pump power efficiency greater than 80% with most loads)
and 7-µA typical shutdown current, the LM27761 provides ideal performance when driving power
amplifiers, DAC bias rails, and other high-current, low-noise voltage applications.
For all available packages, see the orderable addendum at the
end of the data sheet.
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