DLPS289A June   2025  – September 2025 DLP391TP

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  Storage Conditions
    3. 5.3  ESD Ratings
    4. 5.4  Recommended Operating Conditions
    5.     11
    6. 5.5  Thermal Information
    7. 5.6  Electrical Characteristics
    8. 5.7  Switching Characteristics
    9. 5.8  Timing Requirements
    10.     16
    11. 5.9  System Mounting Interface Loads
    12.     18
    13. 5.10 Micromirror Array Physical Characteristics
    14.     20
    15. 5.11 Micromirror Array Optical Characteristics
    16. 5.12 Window Characteristics
    17. 5.13 Chipset Component Usage Specification
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Power Interface
      2. 6.3.2 LPSDR Low-Speed Interface
      3. 6.3.3 High-Speed Interface
      4. 6.3.4 Timing
    4. 6.4 Device Functional Modes
    5. 6.5 Optical Interface and System Image Quality Considerations
      1. 6.5.1 Numerical Aperture and Stray Light Control
      2. 6.5.2 Pupil Match
      3. 6.5.3 Illumination Overfill
    6. 6.6 Micromirror Array Temperature Calculation
    7. 6.7 Micromirror Power Density Calculation
    8. 6.8 Window Aperture Illumination Overfill Calculation
    9. 6.9 Micromirror Landed-On/Landed-Off Duty Cycle
      1. 6.9.1 Definition of Micromirror Landed-On/Landed-Off Duty Cycle
      2. 6.9.2 Landed Duty Cycle and Useful Life of the DMD
      3. 6.9.3 Landed Duty Cycle and Operational DMD Temperature
      4. 6.9.4 Estimating the Long-Term Average Landed Duty Cycle of a Product or Application
  8. 7 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
      3. 7.2.3 Application Curve
    3. 7.3 Temperature Sensor Diode
  9. 8 Power Supply Recommendations
    1. 8.1 DMD Power Supply Power-Up Procedure
    2. 8.2 DMD Power Supply Power-Down Procedure
  10. 9 Layout
    1. 9.1 Layout Guidelines
  11. 10Device and Documentation Support
    1. 10.1 Third-Party Products Disclaimer
    2. 10.2 Device Support
      1. 10.2.1 Device Nomenclature
      2. 10.2.2 Device Markings
    3. 10.3 Documentation Support
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

8.2 DMD Power Supply Power-Down Procedure

  • During power-down, VDD and VDDA must be supplied until after VBIAS, VRESET, and VOFFSET are discharged to within the specified limit of ground.
  • During power-down, it is a strict requirement that the voltage difference between VBIAS and VOFFSET must be within the specified limit shown in Section 5.4.
  • During power-down, there is no requirement for the relative timing of VRESET with respect to VBIAS.
  • Power supply slew rates during power-down are flexible, provided that the transient voltage levels follow the requirements specified in the Section 5.1, Section 5.4, and Figure 8-1.
  • During power-down, LVCMOS input pins must be less than specified in the Section 5.4.
DLP391TP DMD Power Supply Requirements
A. See Section 4 for the Pin Functions Table.
B. To prevent excess current, the supply voltage difference |VOFFSET – VBIAS| must be less than the specified limit in the Section 5.4.
C. To prevent excess current, the supply difference |VBIAS – VRESET| must be less than the specified limit in Section 5.4.
D. VBIAS should power up after VOFFSET has powered up, per the Delay1 specification.
E. DLP controller software initiates the global VBIAS command.
F. After the DMD micromirror park sequence is complete, the DLP controller software initiates a hardware power-down that activates DMD_EN_ARSTZ and disables VBIAS, VRESET, and VOFFSET.
G. Under power-loss conditions where emergency DMD micromirror park procedures are being enacted by the DLP controller hardware, DMD_EN_ARSTZ will go low.
H. VDD must remain high until after VOFFSET, VBIAS, VRESET go low, per Delay2 specification.
I. To prevent excess current, the supply voltage delta |VDDA – VDD| must be less than the specified limit in Section 5.4.
Figure 8-1 DMD Power Supply Requirements