LM2681 Datasheet (Texas Instruments) - Switched Capacitor Voltage Converter

LM2681, Switched Capacitor Voltage Converter

The LM2681 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of +2.5V to +5.5V.

Two low cost capacitors and a diode (needed during start-up) is used in this circuit to provide up to 20 mA of output current.

The LM2681 can also work as a voltage divide

LM2681 Features

* 1

* 2 Doubles or Splits Input Supply Voltage

* SOT-23 6-Lead Package

* 15Ω Typical Output Impedance

* 90% Typical Conversion Efficiency at 20 mA APPLICATIONS

* Cellular Phones

* Pagers

* PDAs

* Operational Amplifier Power Suppliers