SLVA505A February   2012  – July 2024 DRV8800 , DRV8801 , DRV8802 , DRV8803 , DRV8804 , DRV8805 , DRV8806 , DRV8811 , DRV8812 , DRV8813 , DRV8814 , DRV8818 , DRV8821 , DRV8823 , DRV8824 , DRV8828 , DRV8829 , DRV8830 , DRV8832 , DRV8832-Q1 , DRV8833 , DRV8834 , DRV8835 , DRV8836 , DRV8837 , DRV8840 , DRV8841 , DRV8842 , DRV8843 , DRV8844 , DRV8870 , DRV8871 , DRV8872

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Factors Limiting the Maximum Output Current of a Motor Driver
    1. 1.1 Thermal Limitations
    2. 1.2 Overcurrent Protection (OCP) Limitations
    3. 1.3 Silicon and Package Limitations
    4. 1.4 PCB Limitations and Thermal Management Techniques
      1. 1.4.1 Exposed Pad Packages
      2. 1.4.2 Continuous Copper Planes
      3. 1.4.3 Copper Thickness
      4. 1.4.4 Thermal Vias
      5. 1.4.5 Summary of Thermal Management Techniques
    5. 1.5 Thermal Estimations
  5. 2TI Motor Driver OCP Operation
  6. 3TI Motor Driver Data Sheet Ratings
    1. 3.1 Description
    2. 3.2 Absolute Maximum Ratings
    3. 3.3 Recommended Operating Conditions
    4. 3.4 Thermal Information
    5. 3.5 Electrical Characteristics
  7. 4References
  8. 5Revision History

3.3 Recommended Operating Conditions

Recommended operating conditions are simply that: conditions that are typically recommended to operate the device within. The device is assured to function correctly within this range.

Table 3-2 Recommended Operating Conditions TA = 25°C (unless otherwise noted)
MINNOMMAXUNIT
VMMotor power supply voltage range(1)2.710.8V
VDIGINDigital input pin voltage range–0.35.75V
IOUTContinuous RMS or DC output current per bridge(2)1.5A
(1) Note that RDS(ON) increases and maximum output current is reduced at VM supply voltages below 5 V.
(2) VM = 5 V, power dissipation and thermal limits must be observed.

The recommended continuous DC or RMS output current is specified. This recommendation is based on 25°C ambient temperature, on a JEDEC PCB. Pay particular attention to Note 1, stating RDS(ON) increases at higher temperatures, and Note 2, reminding that the power dissipation and thermal limits must be observed. At higher ambient temperatures and/or on a PCB that cannot dissipate power as well as the JEDEC board, this current level is not attainable before hitting overtemperature shutdown.