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DRV8821 Dual Stepper Motor Controller and Driver
SLVS912J
January 2009 – January 2016
DRV8821
PRODUCTION DATA.
CONTENTS
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DRV8821 Dual Stepper Motor Controller and Driver
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Dissipation Ratings
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
PWM Motor Drivers
7.3.2
Current Regulation
7.3.3
Blanking Time
7.3.4
Microstepping Indexer
7.3.5
xRESETn and xENBLn Operation
7.3.6
Protection Circuits
7.3.6.1
Overcurrent Protection (OCP)
7.3.6.2
Thermal Shutdown (TSD)
7.3.6.3
Undervoltage Lockout (UVLO)
7.3.6.4
Shoot-Through Current Prevention
7.4
Device Functional Modes
7.4.1
Decay Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Stepper Motor Speed
8.2.2.2
Current Regulation
8.2.3
Application Curves
9
Power Supply Recommendations
9.1
Bulk Capacitance
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.3
Thermal Considerations
10.3.1
Power Dissipation
10.3.2
Heatsinking
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Community Resources
11.3
Trademarks
11.4
Electrostatic Discharge Caution
11.5
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DCA|48
MPDS044E
Thermal pad, mechanical data (Package|Pins)
DCA|48
PPTD120J
Orderable Information
slvs912j_oa
slvs912j_pm
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