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MAX660

Part Number	MAX660
Manufacturer	National Semiconductor
Description	Switched Capacitor Voltage Converter
Published	May 2, 2005
Detailed Description	MAX660 Switched Capacitor Voltage Converter November 1999 MAX660 Switched Capacitor Voltage Converter General Descript...
Datasheet	MAX660 PDF File

Overview

MAX660 Switched Capacitor Voltage Converter November 1999 MAX660 Switched Capacitor Voltage Converter General Description The MAX660 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.
5V to 5.
5V to the corresponding negative voltage.
The MAX660 uses two low cost capacitors to provide 100 mA of output current without the cost, size, and EMI related to inductor based converters.
With an operating current of only 120 µA and operating efficiency greater than 90% at most loads, the MAX660 provides ideal performance for battery powered systems.
The MAX660 may also be used as a positive voltage doubler.
The oscillator frequency can be lowered by adding an external capacitor to the OSC pin.
Also, the OSC pin may be used to drive the MAX660 with an external clock.
A frequency control (FC) pin selects the oscillator frequency of 10 kHz or 80 kHz.
Features n n n n n Inverts or doubles input supply voltage Narrow SO-8 Package 6.
5Ω typical output resistance 88% typical conversion efficiency at 100 mA Selectable oscillator frequency: 10 kHz/80 kHz Applications n n n n n n Laptop computers Cellular phones Medical instruments Operational amplifier power supplies Interface power supplies Handheld instruments Typical Application Circuits Voltage Inverter Positive Voltage Doubler DS100898-1 DS100898-2 Connection Diagram 8-Lead SO DS100898-5 Top View Ordering Information Order Number MAX660M MAX660MX Top Mark Date Code MAX660M Date Code MAX660M Package M08A M08A Rail (95 units/rail) Tape and Reel (2500 units/rail) Supplied as © 1999 National Semiconductor Corporation DS100898 www.
national.
com MAX660 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Supply Voltage (V+ to GND, or GND to OUT) 6V LV (OUT − 0.
3V) to (GND + 3V) FC, OSC The least negative of (OUT − 0.
3V) or (V+ − 6V) to (V+ + 0.
3V) V+ and ...

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