SLVSI22 August   2025 DRV8844A

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 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. 6 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)
      6. 6.3.6 CLR_FAULT and nSLEEP Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Application Information
      1. 7.2.1 Driving Solenoid Loads
      2. 7.2.2 Driving Stepper Motor
      3. 7.2.3 Driving Brushed DC motor
    3. 7.3 Power Supply Recommendations
      1. 7.3.1 Bulk Capacitance
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
      3. 7.4.3 Thermal Considerations
        1. 7.4.3.1 Heatsinking
      4. 7.4.4 Power Dissipation
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Community Resources
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.2.1 Driving Solenoid Loads

Solenoids can be unipolar or bipolar(bistable). DRV8844A supports a unipolar (VM,0) as well as a bipolar (+VM, -VM) supply and can hence be used to drive both types of solenoid loads.

Additionally DRV8844A has independent IN and EN pins for each of the four half-bridges. All the four half-bridges also have separate SRC pins which allows a current sense resistor to be placed if desired.

DRV8844A DRV8844A used to drive Bipolar solenoid load Figure 7-1 DRV8844A used to drive Bipolar solenoid load.

The DRV8844A supports dual rail operation. Here a voltage -24V relative to LGND can be applied on VNEG and a voltage +24V relative to LGND is applied to VM. This allows a load to LGND to be pulled up to VM (charge) or pulled down to VNEG (discharge)

DRV8844A DRV8844A drive unipolar load to VLOAD (sink) Figure 7-2 DRV8844A drive unipolar load to VLOAD (sink).

Load connection from OUT to VLOAD allows DRV8844A to work as a pull down with active high side recirculation

DRV8844A DRV8844A drive unipolar load to VNEG(source) Figure 7-3 DRV8844A drive unipolar load to VNEG(source). Load connection from OUT to VNEG allows DRV8844A to work as a pull up with active low side recirculation