SLVSDA4C
January 2017 – March 2020
DRV8886
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Simplified Schematic
4
Revision History
5
Pin Configuration and Functions
Pin 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
Indexer Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Stepper Motor Driver Current Ratings
7.3.1.1
Peak Current Rating
7.3.1.2
rms Current Rating
7.3.1.3
Full-Scale Current Rating
7.3.2
PWM Motor Drivers
7.3.3
Microstepping Indexer
7.3.4
Current Regulation
7.3.5
Controlling RREF With an MCU DAC
7.3.5.1
Various Sources of Error
7.3.5.1.1
VRREF, ARREF, and RREF Error
7.3.5.1.2
VDAC Error
7.3.5.2
Application-Specific Error Calculations
7.3.6
Decay Modes
7.3.6.1
Mode 1: Slow Decay for Increasing Current, Mixed Decay for Decreasing Current
7.3.6.2
Mode 2: Mixed Decay for Increasing and Decreasing Current
7.3.6.3
Mode 3: Slow Decay for Increasing and Decreasing Current
7.3.7
Blanking Time
7.3.8
Charge Pump
7.3.9
Linear Voltage Regulators
7.3.10
Logic and Multi-Level Pin Diagrams
7.3.11
Protection Circuits
7.3.11.1
VM Undervoltage Lockout (UVLO)
7.3.11.2
VCP Undervoltage Lockout (CPUV)
7.3.11.3
Overcurrent Protection (OCP)
7.3.11.4
Thermal Shutdown (TSD)
7.4
Device Functional Modes
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
8.2.2.3
Decay Modes
8.2.3
Application Curves
9
Power Supply Recommendations
9.1
Bulk Capacitance
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PWP|24
MPDS372A
RHR|28
MPQF243A
Thermal pad, mechanical data (Package|Pins)
PWP|24
PPTD111R
RHR|28
QFND246D
Orderable Information
slvsda4c_oa
slvsda4c_pm
10.2
Layout Example
Figure 32.
Layout Recommendation