DRV8824_16 Datasheet, PDF (2/35 Pages) Texas Instruments – Stepper Motor Controller IC

DRV8824
SLVSA06J – OCTOBER 2009 – REVISED JULY 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Schematic............................................. 1
5 Revision History..................................................... 2
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 Handling Ratings....................................................... 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Timing Requirements ................................................ 7
7.7 Typical Characteristics .............................................. 8
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 18
9 Application and Implementation ........................ 19
9.1 Application Information............................................ 19
9.2 Typical Application .................................................. 19
10 Power Supply Recommendations ..................... 22
10.1 Bulk Capacitance .................................................. 22
10.2 Power Supply and Logic Sequencing ................... 22
11 Layout................................................................... 23
11.1 Layout Guidelines ................................................. 23
11.2 Layout Example .................................................... 23
12 Device and Documentation Support ................. 24
12.1 Trademarks ........................................................... 24
12.2 Electrostatic Discharge Caution ............................ 24
12.3 Glossary ................................................................ 24
13 Mechanical, Packaging, and Orderable
Information ........................................................... 24
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision I (June 2014) to Revision J
Page
• Updated images on the front page ........................................................................................................................................ 1
• Update the continuous motor drive output current value in Absolute Maximum Ratings ...................................................... 4
• Updated typical t_DEG time ....................................................................................................................................................... 6
• Updated text and equations in Detailed Design Procedure ................................................................................................. 20
• Updated Bulk Capacitance and image ................................................................................................................................. 22
• Layout Example image updated. ......................................................................................................................................... 23
Changes from Revision H (December 2013) to Revision I
Page
• Updated data sheet to new TI standard: added sections and rearranged material .............................................................. 1
• Updated pin description for AVREF and BVREF .................................................................................................................. 3
• Added power supply ramp rate to Absolute Maximum Ratings ............................................................................................ 4
• Added minimum voltage for V_IL and removed typical ............................................................................................................. 6
• Updated parameter descriptions in Timing Requirements and t_WAKE minimum and maximum ............................................. 7
Changes from Revision G (August 2013) to Revision H
Page
• Changed in Electrical Characteristics table, section DECAY INPUT third row ...................................................................... 6
2
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