LM3350 National Semiconductor, LM3350 Datasheet
LM3350
Manufacturer Part Number
LM3350
Description
Switched Capacitor Voltage Converter
Manufacturer
National Semiconductor
Datasheet
1.LM3350.pdf
(8 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM3350MM
Manufacturer:
DIODES
Quantity:
3 000
Part Number:
LM3350MM
Manufacturer:
NS/国半
Quantity:
20 000
Company:
Part Number:
LM3350MMX
Manufacturer:
MATSUSHITA
Quantity:
45
© 1999 National Semiconductor Corporation
LM3350
Switched Capacitor Voltage Converter
General Description
The LM3350 is a CMOS charge-pump voltage converter
which efficiently provides a 3.3V to 5V step-up, or 5V to 3.3V
step-down. The LM3350 uses four small, low cost capacitors
to provide the voltage conversion. It eliminates the cost, size
and radiated EMI related to inductor based circuits, or the
power loss of a linear regulator. Operating power conversion
efficiency greater than 90% provides ideal performance for
battery powered portable systems.
The architecture provides a fixed voltage conversion ratio of
3/2 or 2/3. Thus it can be used for other DC-DC conversions
as well.
Key Specifications
n 800 kHz switch frequency allows use of very small,
Ordering Information
Basic Operating Circuits
Connection Diagram
Order Number
inexpensive capacitors.
LM3350MMX
LM3350MM
Step-Up Converter
Package Type
Mini SO-8
Mini SO-8
DS100002
NSC Package
Drawing
MUA08A
MUA08A
Mini SO8 Package
DS100002-1
Top View
n 4.2
n 1.8
n 90% typical power conversion efficiency at 50 mA
n 250 nA typical shutdown current
Features
n Conversion of 3.3V to 5V, or 5V to 3.3V
n Small Mini SO-8 package
n No inductor required
Applications
n Any mixed 5V and 3.3V system
n Laptop computers and PDAs
n Handheld instrumentation
n PCMCIA cards
DS100002-3
Package
Marking
S00A
S00A
typical step-up output impedance
typical step-down output impedance
Step-Down Converter
3500k Units on Tape and Reel
1000 Units on Tape and Reel
Supplied As
December 1999
www.national.com
DS100002-2
Related parts for LM3350
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
National Semiconductor [8-Bit D/A Converter]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
National Semiconductor [Media Coprocessor]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
AC97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound
Manufacturer:
National Semiconductor
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
General Purpose, Low Voltage, Low Power, Rail-to-Rail Output Operational Amplifiers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
8-bit 20 MSPS flash A/D converter.
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Low Noise Quad Operational Amplifier
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad Differential Line Receivers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad High Speed Trapezoidal? Bus Transceiver
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Dual Line Receiver
Manufacturer:
National Semiconductor
Datasheet: