LM2682 Switched Capacitor
Voltage Doubling Inverter
November 1999
LM2682 Switched Capacitor
Voltage Doubling Inverter
General Description
The LM2682 is a
CMOS charge-pump
voltage inverter capable of converting positive
voltage in the range of +2.
0V to +5.
5V to the corresponding doubled negative
voltage of −4.
0V to −11.
0V respectively.
The LM2682 uses three low cost
capacitors to provide 10 mA of output current without the cost, size, and EMI related to inductor based circuits.
With an operating current of only 150 µA and an operating efficiency greater than 90% with most loads, the LM2682 provides ideal performance for battery powered systems.
The LM2682 offers a switching frequency of 6 k...