Electronic Components Datasheet Search
Selected language     English  ▼


LM2678 Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM2678
Description  SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
Download  27 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo 

 
 5 page
background image
All Output Voltage Versions
Electrical Characteristics (Continued)
Note 4: All limits are guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100%
tested during production with TA =TJ = 25˚C. All limits at temperature extremes are guaranteed via correlation using standard standard Quality Control (SQC)
methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
Note 5: Junction to ambient thermal resistance (no external heat sink) for the 7 lead TO-220 package mounted vertically, with 12 inch leads in a socket, or on a PC
board with minimum copper area.
Note 6: Junction to ambient thermal resistance (no external heat sink) for the 7 lead TO-220 package mounted vertically, with 12 inch leads soldered to a PC board
containing approximately 4 square inches of (1 oz.) copper area surrounding the leads.
Note 7: Junction to ambient thermal resistance for the 7 lead TO-263 mounted horizontally against a PC board area of 0.136 square inches (the same size as the
TO-263 package) of 1 oz. (0.0014 in. thick) copper.
Note 8: Junction to ambient thermal resistance for the 7 lead TO-263 mounted horizontally against a PC board area of 0.4896 square inches (3.6 times the area
of the TO-263 package) of 1 oz. (0.0014 in. thick) copper.
Note 9: Junction to ambient thermal resistance for the 7 lead TO-263 mounted horizontally against a PC board copper area of 1.0064 square inches (7.4 times the
area of the TO-263 package) of 1 oz. (0.0014 in. thick) copper. Additional copper area will reduce thermal resistance further. See the thermal model in Switchers
Made Simple® software.
Note 10: Junction to ambient thermal resistance for the 14-lead LLP mounted on a PC board copper area equal to the die attach paddle.
Note 11: Junction to ambient thermal resistance for the 14-lead LLP mounted on a PC board copper area using 12 vias to a second layer of copper equal to die
attach paddle. Additional copper area will reduce thermal resistance further. For layout recommendations, refer to Application Note AN-1187.
www.national.com
5




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  25  26  27 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
LM2676SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator 1 2 3 4 5 MoreNational Semiconductor (TI)
LM2677SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync 1 2 3 4 5 MoreNational Semiconductor (TI)
LM2670SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync 1 2 3 4 5 MoreNational Semiconductor (TI)
LM2671SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features 1 2 3 4 5 MoreNational Semiconductor (TI)
LM2672SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator with Features 1 2 3 4 5 MoreNational Semiconductor (TI)
LM2674SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator 1 2 3 4 5 MoreNational Semiconductor (TI)
LM2675SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator 1 2 3 4 5 MoreNational Semiconductor (TI)
LM2678S-12SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator 1 2 3 4 5 MoreNational Semiconductor (TI)
LM2673SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit 1 2 3 4 5 MoreNational Semiconductor (TI)
LM2590HVSIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator with Features 1 2 3 4 5 MoreNational Semiconductor (TI)

Link URL

Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com 2003 - 2017    


Mirror Sites
English : Alldatasheet.com  , 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