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LM2765 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM2765
Description  Switched Capacitor Voltage Converter
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM2765 Datasheet(HTML) 1 Page - National Semiconductor (TI)

   
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LM2765
Switched Capacitor Voltage Converter
General Description
The LM2765 CMOS charge-pump voltage converter oper-
ates as a voltage doubler for an input voltage in the range of
+1.8V to +5.5V. Two low cost capacitors and a diode are
used in this circuit to provide up to 20 mA of output current.
The LM2765 operates at 50 kHz switching frequency to re-
duce output resistance and voltage ripple. With an operating
current of only 130 µA (operating efficiency greater than 90%
with most loads) and 0.1µA typical shutdown current, the
LM2765 provides ideal performance for battery powered
systems. The device is manufactured in a SOT-23-6 pack-
age.
Features
n
Doubles Input Supply Voltage
n
SOT23-6 Package
n
20
Ω Typical Output Impedance
n
90% Typical Conversion Efficiency at 20 mA
n
0.1µA Typical Shutdown Current
Applications
n
Cellular Phones
n
Pagers
n
PDAs
n
Operational Amplifier Power Supplies
n
Interface Power Supplies
n
Handheld Instruments
Basic Application Circuits
Connection Diagram
Ordering Information
Order Number
Package
Number
Package
Marking
Supplied as
LM2765M6
MA06A
S15B (Note 1)
Tape and Reel (1000 units/reel)
LM2765M6X
MA06A
S15B (Note 1)
Tape and Reel (3000 units/reel)
Note 1: The small physical size of the SOT-23 package does not allow for the full part number marking. Devices will be marked with the designation shown in
the column Package Marking.
Voltage Doubler
DS101281-1
6-Lead SOT (M6)
DS101281-13
Top View With Package Marking
DS101281-22
Actual Size
March 2000
© 2000 National Semiconductor Corporation
DS101281
www.national.com


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