LM2940-N_15 Datasheet, PDF (2/37 Pages) Texas Instruments – LM2940x 1-A Low Dropout Regulator

LM2940-N, LM2940C
SNVS769J – MARCH 2000 – REVISED DECEMBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics (5 V and 8 V) .................... 5
6.6 Electrical Characteristics (9 V and 10 V) .................. 6
6.7 Electrical Characteristics (12 V and 15 V) ................ 7
6.8 Typical Characteristics .............................................. 8
7 Detailed Description ............................................ 13
7.1 Overview ................................................................. 13
7.2 Functional Block Diagram ....................................... 13
7.3 Feature Description................................................. 13
7.4 Device Functional Modes........................................ 14
8 Application and Implementation ........................ 15
8.1 Application Information............................................ 15
8.2 Typical Application .................................................. 15
9 Power Supply Recommendations...................... 17
10 Layout................................................................... 17
10.1 Layout Guidelines ................................................. 17
10.2 Layout Examples................................................... 17
10.3 Heatsinking ........................................................... 18
11 Device and Documentation Support ................. 20
11.1 Documentation Support ........................................ 20
11.2 Related Links ........................................................ 20
11.3 Trademarks ........................................................... 20
11.4 Electrostatic Discharge Caution ............................ 20
11.5 Glossary ................................................................ 20
12 Mechanical, Packaging, and Orderable
Information ........................................................... 20
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision I (April 2013) to Revision J
Page
• Added Pin Configuration and Functions section, ESD Rating table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
• Deleted information re: obsolete CDIP and CLGA package options ; Change pin names from Vin, Vout to IN, OUT;
delete Heatsinking sections re: packages apart from TO-220 ............................................................................................... 1
• Changed symbols for Thermal Information ......................................................................................................................... 19
Changes from Revision H (April 2013) to Revision I
Page
2
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