SLVSA06J October   2009  – July 2014 DRV8824

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Simplified Schematic
  5. Revision History
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 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. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 PWM Motor Drivers
      2. 8.3.2 Current Regulation
      3. 8.3.3 Decay Mode
      4. 8.3.4 Blanking Time
      5. 8.3.5 Microstepping Indexer
      6. 8.3.6 nRESET, nENBLE and nSLEEP Operation
      7. 8.3.7 Protection Circuits
        1. 8.3.7.1 Overcurrent Protection (OCP)
        2. 8.3.7.2 Thermal Shutdown (TSD)
        3. 8.3.7.3 Undervoltage Lockout (UVLO)
      8. 8.3.8 Thermal Information
        1. 8.3.8.1 Thermal Protection
        2. 8.3.8.2 Power Dissipation
        3. 8.3.8.3 Heatsinking
    4. 8.4 Device Functional Modes
      1. 8.4.1 STEP/DIR Interface
      2. 8.4.2 Microstepping
  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
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Bulk Capacitance
    2. 10.2 Power Supply and Logic Sequencing
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • RHD|28
  • PWP|28
散热焊盘机械数据 (封装 | 引脚)
订购信息

1 Features

  • PWM Microstepping Stepper Motor Driver
    • Built-In Microstepping Indexer
    • Up to 1/32 Microstepping
  • Multiple Decay Modes:
    • Mixed Decay
    • Slow Decay
    • Fast Decay
  • 8.2-V to 45-V Operating Supply Voltage Range
  • 1.6-A Maximum Drive Current at 24 V and
    TA = 25°C
  • Simple STEP/DIR Interface
  • Low-Current Sleep Mode
  • Built-In 3.3-V Reference Output
  • Small Package and Footprint
  • Protection Features:
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • VMx Undervoltage Lockout (UVLO)
    • Fault Condition Indication Pin (nFAULT)

2 Applications

  • Automatic Teller Machines
  • Money Handling Machines
  • Video Security Cameras
  • Printers
  • Scanners
  • Office Automation Machines
  • Gaming Machines
  • Factory Automation
  • Robotics

3 Description

The DRV8824 provides an integrated motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers and a microstepping indexer, and is intended to drive a bipolar stepper motor. The output driver block consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings. The DRV8824 is capable of driving up to 1.6 A of current from each output (with proper heatsinking, at 24 V and 25°C).

A simple STEP/DIR interface allows easy interfacing to controller circuits. Mode pins allow for configuration of the motor in full-step up to 1/32-step modes. Decay mode is configurable so that slow decay, fast decay, or mixed decay can be used. A low-power sleep mode is provided which shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin.

Internal shutdown functions are provided for overcurrent, short circuit, undervoltage lockout, and over temperature. Fault conditions are indicated through the nFAULT pin.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DRV8824 HTSSOP (28) 9.70 mm × 6.40 mm
QFN (28) 5.00 mm × 5.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

4 Simplified Schematic

sch_simp_LVSA06.gif

Microstepping Current Waveform

gr_FAD_LVSA06.gif