SLVS997G October   2009  – October 2015 DRV8812

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 PWM Motor Drivers
    4. 7.4 Device Functional Modes
      1. 7.4.1 Bridge Control
      2. 7.4.2 Current Regulation
      3. 7.4.3 Decay Mode
      4. 7.4.4 Blanking Time
      5. 7.4.5 nRESET and nSLEEP Operation
      6. 7.4.6 Protection Circuits
        1. 7.4.6.1 Overcurrent Protection (OCP)
        2. 7.4.6.2 Thermal Shutdown (TSD)
        3. 7.4.6.3 Undervoltage Lockout (UVLO)
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Current Regulation
        2. 8.2.2.2 Decay Modes
        3. 8.2.2.3 Sense Resistor
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Bulk Capacitance
    2. 9.2 Power Supply and Logic Sequencing
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Consideration
      1. 10.3.1 Thermal Protection
      2. 10.3.2 Power Dissipation
      3. 10.3.3 Heatsinking
  11. 11Device and Documentation Support
    1. 11.1 Third-Party Products Disclaimer
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • 8.2-V to 45-V Operating Supply Voltage Range
  • 1.6-A Maximum Drive Current at 24 V and
    TA = 25°C
  • Dual H-Bridge Current Control Motor Driver
    • Drive a Bipolar Stepper or Two DC Motors
    • Four Level Winding Current Control
  • Multiple Decay Modes
    • Mixed Decay
    • Slow Decay
    • Fast Decay
  • Industry Standard Parallel Digital Control Interface
  • Low Current Sleep Mode
  • Built In 3.3-V Reference Output Small Package and Footprint
  • Protection Features
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • VM 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 DRV8812 provides an integrated motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers, and can drive a bipolar stepper motor or two DC motors. The output driver block for each consists of N-channel power MOSFET’s configured as full H-bridges to drive the motor windings. The DRV8812 is capable of driving up to 1.6-A of output current (with proper heatsinking, at 24 V and 25°C).

A simple parallel digital control interface is compatible with industry-standard devices. Decay mode is programmable.

Internal shutdown functions are provided for over current protection, short circuit protection, under voltage lockout and overtemperature.

The DRV8812 is available in a 28-pin HTSSOP package with PowerPAD™ and in a 28-pin QFN package PowerPAD™ (Eco-friendly: RoHS & no Sb/Br).

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DRV8812 HTSSOP (28) 9.70 mm x 4.40 mm
VQFN (28) 5.00 mm x 5.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

DRV8812 key_graphic_slvs997.gif