LM3424 Datasheet, PDF (2/69 Pages) National Semiconductor (TI) – Constant Current N-Channel Controller with Thermal Foldback for Driving LEDs

LM3424, LM3424-Q1
SNVS603C – AUGUST 2009 – REVISED AUGUST 2015
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—LM3424 ............................................. 4
6.3 ESD Ratings—LM3424-Q1 ....................................... 4
6.4 Recommended Operating Conditions....................... 4
6.5 Thermal Information .................................................. 5
6.6 Electrical Characteristics........................................... 6
6.7 Typical Characteristics ............................................. 8
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 11
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 25
8 Application and Implementation ........................ 26
8.1 Application Information............................................ 26
8.2 Typical Applications ................................................ 29
9 Power Supply Recommendations...................... 61
9.1 Input Supply Current Limit ...................................... 61
10 Layout................................................................... 61
10.1 Layout Guidelines ................................................. 61
10.2 Layout Example .................................................... 62
11 Device and Documentation Support ................. 63
11.1 Device Support...................................................... 63
11.2 Related Links ........................................................ 63
11.3 Community Resources.......................................... 63
11.4 Trademarks ........................................................... 63
11.5 Electrostatic Discharge Caution ............................ 63
11.6 Glossary ................................................................ 63
12 Mechanical, Packaging, and Orderable
Information ........................................................... 63
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (October 2009) to Revision C
Page
• Adjusted temperature range in Features section. .................................................................................................................. 1
• Added Pin Configuration and Functions section, ESD Ratings 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
• Changed "Operating Temperature Range (T_J = −40°C to +125°C)" to "Operating Temperature Range (T_A = T_J =
−40°C to +125°C)" in Electrical Characterization table Condition statement ........................................................................ 6
2
Submit Documentation Feedback
Copyright © 2009–2015, Texas Instruments Incorporated
Product Folder Links: LM3424 LM3424-Q1