SLVSCH4 July   2014 DRV8842-EP

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 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 Motor Driver Timing Requirements
    7. 7.7 Typical Characteristics
  8. 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 Bridge Control
      3. 8.3.3 Current Regulation
      4. 8.3.4 Blanking Time
      5. 8.3.5 nRESET and nSLEEP Operation
      6. 8.3.6 Protection Circuits
        1. 8.3.6.1 Overcurrent Protection (OCP)
        2. 8.3.6.2 Thermal Shutdown (TSD)
        3. 8.3.6.3 Undervoltage Lockout (UVLO)
      7. 8.3.7 Thermal Protection
      8. 8.3.8 Heatsinking
    4. 8.4 Device Functional Modes
      1. 8.4.1 Decay Mode
  9. 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 Power Dissipation
        2. 9.2.2.2 Current Regulation Considerations
        3. 9.2.2.3 Slow, Fast, and Mixed 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

Package Options

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

1 Features

  • Single H-Bridge Current-Control Motor Driver
    • Drives One DC Motor, One Coil of a Stepper Motor, or Other Actuators
    • Five-Bit Winding Current Control Allows Up to 32 Current Levels
    • Low MOSFET On-Resistance
  • 5-A Maximum Drive Current at 24 V, 25°C
  • Built-In 3.3-V Reference Output
  • Industry-Standard PWM Control Interface
  • 8.2-V to 45-V Operating Supply Voltage Range
  • Thermally Enhanced Surface Mount Package
  • Supports Defense, Aerospace, and Medical Applications
    • Controlled Baseline
    • One Assembly and Test Site
    • One Fabrication Site
    • Available in Military (–55°C to 125°C) Temperature Range
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability

2 Applications

  • Printers
  • Scanners
  • Office Automation Machines
  • Gaming Machines
  • Factory Automation
  • Robotics

3 Description

The DRV8842-EP provides an integrated motor driver solution for printers, scanners, and other automated equipment applications. The device has one H-bridge driver, and is intended to drive one DC motor, one coil of a stepper motor, or other loads. The output driver block consists of N-channel power MOSFETs configured as an H-bridge. The DRV8842-EP can supply up to 5-A peak or 3.5-A RMS output current (with proper heatsinking at 24 V and 25°C).

Separate inputs to independently control each half of the H-bridge are provided.

Internal shutdown functions are provided for overcurrent protection, short circuit protection, undervoltage lockout, and over-temperature.

The DRV8842-EP is available in a 28-pin HTSSOP package with PowerPAD™ (Eco-friendly: RoHS & no Sb/Br).

Device Information(1)

ORDER NUMBER PACKAGE BODY SIZE (NOM)
DRV8842MPWPREP HTSSOP (28) 9.70 mm x 4.40 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

4 Simplified Schematic

sch_simp_LVSCH4.gif