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 divider to split a voltage in the range of +1.8V to +11V in half.
The LM2681 operates at 160 kHz Oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 550 ?A (operating efficiency greater than 90% with most loads) the LM2681 provides ideal performance for battery powered systems. The device is in SOT-23-6 package.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM2681M6/NOPB Texas Instruments Switched Capacitor Voltage Converter 6-SOT-23 -40 to 85
LM2681M6 Texas Instruments SWITCHED CAPACITOR CONVERTER, 160kHz SWITCHING FREQ-MAX, PDSO6, SOT-23, 6 PIN
LM2681M6X Texas Instruments Switched Capacitor Voltage Converter 6-SOT-23 -40 to 85
LM2681M6X/NOPB Texas Instruments Switched Capacitor Voltage Converter 6-SOT-23 -40 to 85
LM2681 's PackagesLM2681 's pdf datasheet
LM2681M6 SOT-23
LM2681M6X SOT-23




LM2681 Pinout, Pinouts
LM2681 pinout,Pin out
This is one package pinout of LM2681,If you need more pinouts please download LM2681's pdf datasheet.

LM2681 Application circuits
LM2681 circuits
This is one application circuit of LM2681,If you need more circuits,please download LM2681's pdf datasheet.


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