SLVSBA2E July   2012  – July 2025 DRV8844

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Pin Configuration and Functions
  6. Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Typical Characteristics
  7. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Output Stage
      2. 6.3.2 Logic Inputs
      3. 6.3.3 Bridge Control
      4. 6.3.4 Charge Pump
      5. 6.3.5 Protection Circuits
        1. 6.3.5.1 Overcurrent Protection (OCP)
        2. 6.3.5.2 Thermal Shutdown (TSD)
        3. 6.3.5.3 Undervoltage Lockout (UVLO)
    4. 6.4 Device Functional Modes
      1. 6.4.1 nRESET and nSLEEP Operation
  8. Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Motor Voltage
      3. 7.2.3 Application Curves
    3.     Power Supply Recommendations
      1. 7.3.1 Bulk Capacitance
    4. 7.3 Layout
      1. 7.3.1 Layout Guidelines
      2. 7.3.2 Layout Example
      3. 7.3.3 Thermal Considerations
        1. 7.3.3.1 Heatsinking
      4. 7.3.4 Power Dissipation
  9. Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Community Resources
    3. 8.3 Trademarks
  10. Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Design Requirements

The following truth tables describe how to control the arrangement in Figure 7-1.

Table 7-1 Brushed DC Motor
FUNCTIONEN1EN2IN1IN2OUT1OUT2
Forward11PWM0HL
Reverse110PWMLH
Brake1100LL
Brake1111HH
Coast0XXXZX
CoastX0XXXZ
Table 7-2 Single-Direction Brushed DC Motor
FUNCTIONEN3IN3OUT3
On1PWML
Brake11H
Coast0XZ
Table 7-3 Inductive Loads
FUNCTIONEN4IN4OUT4
On1PWMH
Off or slow decay10L
Off or coast0XZ