LM2682_15 Datasheet, PDF (1/15 Pages) Texas Instruments – LM2682 Switched Capacitor Voltage Doubling Inverter

LM2682
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SNVS044B – NOVEMBER 1999 – REVISED MAY 2013
LM2682 Switched Capacitor Voltage Doubling Inverter
Check for Samples: LM2682
FEATURES
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•2 Inverts Then Doubles Input Supply Voltage
• Small VSSOP Package and SOIC Package
• 90Ω Typical Output Impedance
• 94% Typical Power Efficiency at 10 mA
APPLICATIONS
• LCD Contrast Biasing
• GaAs Power Amplifier Biasing
• Interface Power Supplies
• Handheld Instrumentation
• Laptop Computers and PDAs
DESCRIPTION
The LM2682 is a CMOS charge-pump voltage
inverter capable of converting positive voltage in the
range of +2.0V to +5.5V to the corresponding
doubled negative voltage of −4.0V to −11.0V
respectively. The LM2682 uses three low cost
capacitors to provide 10 mA of output current without
the cost, size, and EMI related to inductor based
circuits. With an operating current of only 150 μA and
an operating efficiency greater than 90% with most
loads, the LM2682 provides ideal performance for
battery powered systems. The LM2682 offers a
switching frequency of 6 kHz.
Typical Operating Circuit and Pin Configuration
8-Pin VSSOP
or 8-Pin SOIC
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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2
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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