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.