LM82CIMQA National Semiconductor, LM82CIMQA Datasheet
LM82CIMQA
Manufacturer Part Number
LM82CIMQA
Description
IC,SSOP,16PIN
Manufacturer
National Semiconductor
Specifications of LM82CIMQA
Rohs Compliant
NO
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© 1999 National Semiconductor Corporation
LM828
Switched Capacitor Voltage Converter
General Description
The LM828 CMOS charge-pump voltage converter inverts a
positive voltage in the range of +1.8V to +5.5V to the corre-
sponding negative voltage of −1.8V to −5.5V. The LM828
uses two low cost capacitors to provide up to 25 mA of out-
put current.
The LM828 operates at 12 kHz switching frequency to re-
duce output resistance and voltage ripple. With an operating
current of only 40 µA (operating efficiency greater than 96%
with most loads), the LM828 provides ideal performance for
battery powered systems. The device is in a tiny SOT-23-5
package.
Basic Application Circuits
DS100137
+5V to −10V Converter
Voltage Inverter
Features
n Inverts Input Supply Voltage
n SOT-23-5 Package
n 20
n 97% Typical Conversion Efficiency at 5 mA
Applications
n Cellular Phones
n Pagers
n PDAs
n Operational Amplifier Power Supplies
n Interface Power Supplies
n Handheld Instruments
Typical Output Impedance
DS100137-1
DS100137-2
www.national.com
March 1999
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