Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LM2662, LM2663

SNVS002E – JANUARY 1999 – REVISED OCTOBER 2014

LM266x Switched Capacitor Voltage Converter

1 Features

3 Description

The LM2662/LM2663 CMOS charge-pump voltage

1

•

Inverts or Doubles Input Supply Voltage

converter inverts a positive voltage in the range of 1.5

•

3.5-

Ω Typical Output Resistance

V to 5.5 V to the corresponding negative voltage. The

•

86% Typical Conversion Efficiency at 200 mA

LM2662/LM2663 uses two low cost capacitors to

provide 200 mA of output current without the cost,

•

(LM2662) Selectable Oscillator Frequency: 20

size, and EMI related to inductor based converters.

kHz/150 kHz

With an operating current of only 300

μA and

•

(LM2663) Low Current Shutdown Mode

operating efficiency greater than 90% at most loads,

the LM2662/LM2663 provides ideal performance for

2 Applications

battery powered systems. The LM2662/LM2663 may

also be used as a positive voltage doubler.

•

Laptop Computers

•

Cellular Phones

The oscillator frequency can be lowered by adding an

external capacitor to the OSC pin. Also, the OSC pin

•

Medical Instruments

may be used to drive the LM2662/LM2663 with an

•

Operational Amplifier Power Supplies

external clock. For LM2662, a frequency control (FC)

•

Interface Power Supplies

pin selects the oscillator frequency of 20 kHz or 150

kHz. For LM2663, an external shutdown (SD) pin

•

Handheld Instruments

replaces the FC pin. The SD pin can be used to

space

disable the device and reduce the quiescent current

space

to 10

μA. The oscillator frequency for LM2663 is 150

kHz.

Voltage Inverter

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM2662

SOIC (8)

4.90 mm x 3.91 mm

LM2663

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

space

space

Positive Voltage Doubler

* Please see Positive Voltage Doubler

section regarding choice of D1.

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.