1 Features

1• Doubles Input Supply Voltage

• SOT-23 6-Pin Package

• 20-Ω Typical Output Impedance

• 90% Typical Conversion Efficiency at 20 mA

• 0.1-μA Typical Shutdown Current

2 Applications

• Cellular Phones

• Pagers battery•

PDAs

• Operational Amplifier Power Supplies

• Interface Power Supplies

• Handheld Instruments

3 Description

The LM2766 CMOS charge-pump voltage converter

operates as a voltage doubler for an input voltage in the range of 1.8 V to 5.5 V. Two low-cost capacitors

and a diode are used in this circuit to provide up to

20 mA of output current.

The LM2766 operates at 200-kHz switching

frequency to reduce output resistance and voltage

ripple. With an operating current of only 350 μA

(operating efficiency greater than 90% with most loads) and 0.1-μA typical shutdown current, the

LM2766 provides ideal performance for battery•

powered systems. The device is manufactured in a

SOT-23 6-pin package.