LM2686
LM2686 is Regulated Switched Capacitor Voltage Converter manufactured by National Semiconductor.
LM2686 Regulated Switched Capacitor Voltage Converter
November 1999
LM2686 Regulated Switched Capacitor Voltage Converter
General Description
The LM2686 CMOS charge-pump voltage converter operates as an input voltage doubler and a +5V regulator for an input voltage in the range of +2.85V to +6.5V. Three low cost capacitors are used in this circuit to provide up to 50mA of output current at +5.0V ( ± 5%). The LM2686 operates at a 130 kHz switching frequency to reduce output resistance and voltage ripple. With an operating current of only 450µA (operating efficiency greater than 80% with most loads) and 6.0µA typical shutdown current, the LM2686 is ideal for use in battery powered systems....
