LM2765 Datasheet, PDF (1/9 Pages) National Semiconductor (TI) – Switched Capacitor Voltage Converter

March 2000
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 20Ω 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
Voltage Doubler
Connection Diagram
6-Lead SOT (M6)
DS101281-1
DS101281-22
Actual Size
DS101281-13
Top View With Package Marking
Ordering Information
Order Number
LM2765M6
LM2765M6X
Package
Number
MA06A
MA06A
Package
Marking
S15B (Note 1)
S15B (Note 1)
Supplied as
Tape and Reel (1000 units/reel)
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.
© 2000 National Semiconductor Corporation DS101281
www.national.com