Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

LM2679 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM2679
Description  SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit
Download  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2679 Datasheet(HTML) 1 Page - National Semiconductor (TI)

  LM2679 Datasheet HTML 1Page - National Semiconductor (TI) LM2679 Datasheet HTML 2Page - National Semiconductor (TI) LM2679 Datasheet HTML 3Page - National Semiconductor (TI) LM2679 Datasheet HTML 4Page - National Semiconductor (TI) LM2679 Datasheet HTML 5Page - National Semiconductor (TI) LM2679 Datasheet HTML 6Page - National Semiconductor (TI) LM2679 Datasheet HTML 7Page - National Semiconductor (TI) LM2679 Datasheet HTML 8Page - National Semiconductor (TI) LM2679 Datasheet HTML 9Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 24 page
background image
LM2679
SIMPLE SWITCHER® 5A Step-Down Voltage Regulator
with Adjustable Current Limit
General Description
The LM2679 series of regulators are monolithic integrated
circuits which provide all of the active functions for a
step-down (buck) switching regulator capable of driving up to
5A loads with excellent line and load regulation characteris-
tics. High efficiency (>90%) is obtained through the use of a
low ON-resistance DMOS power switch. The series consists
of fixed output voltages of 3.3V, 5V and 12V and an adjust-
able output version.
The SIMPLE SWITCHER concept provides for a complete
design using a minimum number of external components. A
high fixed frequency oscillator (260KHz) allows the use of
physically smaller sized components. A family of standard in-
ductors for use with the LM2679 are available from several
manufacturers to greatly simplify the design process.
Other features include the ability to reduce the input surge
current at power-ON by adding a softstart timing capacitor to
gradually turn on the regulator. The LM2679 series also has
built in thermal shutdown and resistor programmable current
limit of the power MOSFET switch to protect the device and
load circuitry under fault conditions. The output voltage is
guaranteed to a ±2% tolerance. The clock frequency is con-
trolled to within a ±11% tolerance.
Features
n
Efficiency up to 92%
n
Simple and easy to design with (using off-the-shelf
external components)
n
Resistor programmable peak current limit over a range
of 3A to 7A.
n
120 m
Ω DMOS output switch
n
3.3V, 5V and 12V fixed output and adjustable (1.2V to
37V ) versions
n ±
2%maximum output tolerance over full line and load
conditions
n
Wide input voltage range: 8V to 40V
n
260 KHz fixed frequency internal oscillator
n
Softstart capability
n
−40 to +125˚C operating junction temperature range
Applications
n
Simple to design, high efficiency (>90%) step-down
switching regulators
n
Efficient system pre-regulator for linear voltage
regulators
n
Battery chargers
Typical Application
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation.
DS100847-3
March 2000
© 2000 National Semiconductor Corporation
DS100847
www.national.com


Similar Part No. - LM2679

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
LM2679 TI1-LM2679 Datasheet
2Mb / 37P
[Old version datasheet]   LM2679 SIMPLE SWITCHER짰 5-A Step-Down Voltage Regulator With Adjustable Current Limit
LM2679S-12/NOPB TI1-LM2679S-12/NOPB Datasheet
2Mb / 37P
[Old version datasheet]   LM2679 SIMPLE SWITCHER짰 5-A Step-Down Voltage Regulator With Adjustable Current Limit
LM2679S-3.3 TI1-LM2679S-3.3 Datasheet
2Mb / 37P
[Old version datasheet]   LM2679 SIMPLE SWITCHER짰 5-A Step-Down Voltage Regulator With Adjustable Current Limit
LM2679S-3.3/NOPB TI1-LM2679S-3.3/NOPB Datasheet
2Mb / 37P
[Old version datasheet]   LM2679 SIMPLE SWITCHER짰 5-A Step-Down Voltage Regulator With Adjustable Current Limit
LM2679S-5.0 TI1-LM2679S-5.0 Datasheet
2Mb / 37P
[Old version datasheet]   LM2679 SIMPLE SWITCHER짰 5-A Step-Down Voltage Regulator With Adjustable Current Limit
More results

Similar Description - LM2679

ManufacturerPart #DatasheetDescription
logo
National Semiconductor ...
LM2673 NSC-LM2673 Datasheet
451Kb / 26P
   SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit
LM22673 NSC-LM22673 Datasheet
511Kb / 18P
   3A SIMPLE SWITCHER, Step-Down Voltage Regulator with Adjustable Soft-Start and Current Limit
LM22679 NSC-LM22679 Datasheet
386Kb / 16P
   5A SIMPLE SWITCHER짰, Step-Down Voltage Regulator with Adjustable Soft-Start and Current Limit
LM2673 NSC-LM2673_08 Datasheet
650Kb / 26P
   SIMPLE SWITCHER짰 3A Step-Down Voltage Regulator with Adjustable Current Limit
logo
Texas Instruments
LM2673SX-ADJ TI-LM2673SX-ADJ Datasheet
1Mb / 35P
[Old version datasheet]   LM2673 SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current
LM2679 TI-LM2679_15 Datasheet
1Mb / 35P
[Old version datasheet]   LM2679 SIMPLE SWITCHER짰 5A Step-Down Voltage Regulator with Adjustable Current
logo
National Semiconductor ...
LM2678 NSC-LM2678 Datasheet
459Kb / 27P
   SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
LM2678S-12 NSC-LM2678S-12 Datasheet
356Kb / 23P
   SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
LM2677 NSC-LM2677 Datasheet
847Kb / 26P
   SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync
logo
Texas Instruments
LM22678TJE-50 TI1-LM22678TJE-50 Datasheet
1Mb / 23P
[Old version datasheet]   LM22678/LM22678Q 42V, 5A SIMPLE SWITCHER Step-Down Voltage Regulator with
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com