SNVS009F – NOVEMBER 1999 – REVISED MAY 2013
LM2665 Switched Capacitor Voltage Converter
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FEATURES
Doubles or Splits Input Supply Voltage
6-Pin SOT-23 Package
12Ω Typical Output Impedance
90% Typical Conversion Efficiency at 40 mA
1µA Typical Shutdown Current
DESCRIPTION
The LM2665 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) are used in this
circuit to provide up to 40 mA of output current. The
LM2665 can also work as a voltage divider to split a
voltage in the range of +1.8V to +11V in half.
The LM2665 operates at 160 kHz oscillator frequency
to reduce output resistance and voltage ripple. With
an operating current of only 650 µA (operating
efficiency greater than 90% with most loads) and 1µA
typical shutdown current, the LM2665 provides ideal
performance for battery powered systems. The
device is in a SOT-23 package.
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APPLICATIONS
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Cellular Phones
Pagers
PDAs
Operational Amplifier Power Suppliers
Interface Power Suppliers
Handheld Instruments
Basic Application Circuits
Voltage Doubler
Splitting V
in
in Half
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright © 1999–2013, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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