SLVSGF6A May   2023  – October 2023 DRV8849

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Indexer Timing Requirements
    7. 7.7 Typical Operating Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Stepper Motor Driver Current Ratings
        1. 8.3.1.1 Peak Current Rating
        2. 8.3.1.2 RMS Current Rating
        3. 8.3.1.3 Full-Scale Current Rating
      2. 8.3.2 Microstepping Indexer
      3. 8.3.3 Controlling VREF with an MCU DAC
      4. 8.3.4 Current Regulation and Decay Modes
        1. 8.3.4.1 Smart tune Ripple Control
        2. 8.3.4.2 Smart tune Dynamic Decay
        3. 8.3.4.3 Blanking time
      5. 8.3.5 Charge Pump
      6. 8.3.6 Logic Level, tri-level and quad-level Pin Diagrams
      7. 8.3.7 nFAULT Pins
      8. 8.3.8 Protection Circuits
        1. 8.3.8.1 VM Undervoltage Lockout (UVLO)
        2. 8.3.8.2 VCP Undervoltage Lockout (CPUV)
        3. 8.3.8.3 Overcurrent Protection (OCP)
          1. 8.3.8.3.1 Latched Shutdown
          2. 8.3.8.3.2 Automatic Retry
        4. 8.3.8.4 Thermal Shutdown (OTSD)
          1. 8.3.8.4.1 Latched Shutdown
          2. 8.3.8.4.2 Automatic Retry
        5. 8.3.8.5 Fault Condition Summary
    4. 8.4 Device Functional Modes
      1. 8.4.1 Sleep Mode (nSLEEP = 0)
      2. 8.4.2 Disable Mode (nSLEEP = 1, ENABLE = 0)
      3. 8.4.3 Operating Mode (nSLEEP = 1, ENABLE = Hi-Z/1)
      4. 8.4.4 nSLEEP Reset Pulse
      5. 8.4.5 Functional Modes Summary
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Stepper Motor Speed
        2. 9.2.2.2 Current Regulation
        3. 9.2.2.3 Decay Modes
        4. 9.2.2.4 Application Curves
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Bulk Capacitance
  12. 11Device and Documentation Support
    1. 11.1 Related Documentation
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.3.8.5 Fault Condition Summary

Table 8-7 Fault Condition Summary
FAULT CONDITION CONFIGURATION ERROR REPORT H-BRIDGE CHARGE PUMP INDEXER LOGIC RECOVERY
VM undervoltage (UVLO) VM < VUVLO
— nFAULT1,

nFAULT2

 Disabled Disabled Disabled Reset
(VM < 3.9 V)		 Automatic: VM > VUVLO
VCP undervoltage (CPUV) VCP < VCPUV
— nFAULT1,

nFAULT2

 Disabled Operating Operating Operating VCP > VCPUV
Overcurrent (OCP) IOUT1 > IOCP
ENABLE1 = Hi-Z nFAULT1 Disabled

(Stepper 1)

 Operating Operating Operating Latched

(Stepper 1)
ENABLE1 = 1 nFAULT1 Disabled

(Stepper 1)

 Operating Operating Operating Automatic retry (Stepper 1) : tRETRY
IOUT2 > IOCP

ENABLE2 = Hi-Z

nFAULT2

 Disabled

(Stepper 2)

 Operating Operating Operating Latched

(Stepper 2)

ENABLE2 = 1

nFAULT2

 Disabled

(Stepper 2)

 Operating Operating Operating Automatic retry (Stepper 2): tRETRY
Thermal Shutdown (OTSD) TJ > TTSD
ENABLE1 = Hi-Z nFAULT1,

nFAULT2

 Disabled Disabled Operating Operating Latched
ENABLE1 = 1 nFAULT1,

nFAULT2

 Disabled Disabled Operating Operating Automatic: TJ < TOTSD - THYS_OTSD