LM2767 Datasheet - National Semiconductor

LM2767 Switched Capacitor Voltage Converter

The LM2767 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of +1.8V to +5.5V. Two low cost capacitors and a diode are used in this circuit to provide at least 15 mA of output current. The LM2767 operates at 11 kHz switching frequency to avoid audio .

LM2767 Features

* n n n n Doubles Input Supply Voltage SOT23-5 Package 20Ω Typical Output Impedance 96% Typical Conversion Efficiency at 15mA Applications n n n n n n Cellular Phones Pagers PDAs, Organizers Operational Amplifier Power Suppliers Interface Power Suppliers Handheld Instruments Basic Application Circui

LM2767_NationalSemiconductor.pdf