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LM2662MX Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce LM2662MX
Description  LM2662/LM2663 Switched Capacitor Voltage Converter
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Site Internet  http://www.ti.com
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LM2662MX Fiches technique(HTML) 1 Page - Texas Instruments

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LM2662, LM2663
www.ti.com
SNVS002D – JANUARY 1999 – REVISED MAY 2013
LM2662/LM2663 Switched Capacitor Voltage Converter
Check for Samples: LM2662, LM2663
1
FEATURES
DESCRIPTION
The LM2662/LM2663 CMOS charge-pump voltage
2
Inverts or Doubles Input Supply Voltage
converter inverts a positive voltage in the range of
8-Pin SOIC Package
1.5V to 5.5V to the corresponding negative voltage.
3.5
Ω Typical Output Resistance
The LM2662/LM2663 uses two low cost capacitors to
provide 200 mA of output current without the cost,
86% Typical Conversion Efficiency at 200 mA
size, and EMI related to inductor based converters.
(LM2662) Selectable Oscillator Frequency: 20
With an operating current of only 300
μA and
kHz/150 kHz
operating efficiency greater than 90% at most loads,
(LM2663) Low Current Shutdown Mode
the LM2662/LM2663 provides ideal performance for
battery powered systems. The LM2662/LM2663 may
also be used as a positive voltage doubler.
APPLICATIONS
Laptop computers
The oscillator frequency can be lowered by adding an
external capacitor to the OSC pin. Also, the OSC pin
Cellular phones
may be used to drive the LM2662/LM2663 with an
Medical instruments
external clock. For LM2662, a frequency control (FC)
Operational amplifier power supplies
pin selects the oscillator frequency of 20 kHz or 150
kHz. For LM2663, an external shutdown (SD) pin
Interface power supplies
replaces the FC pin. The SD pin can be used to
Handheld instruments
disable the device and reduce the quiescent current
to 10
μA. The oscillator frequency for LM2663 is 150
kHz.
Basic Application Circuits
Voltage Inverter
Positive Voltage Doubler
Splitting VIN in Half
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 1999–2013, Texas Instruments Incorporated
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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