DLPS052 October   2015 DLPA3000


  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Block Diagram
  4. Revision History
  5. Pin Configuration and Functions
    1.     Pin Functions
  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 SPI Timing Parameters
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Supply and Monitoring
        1. Supply
        2. Monitoring
          1. Block Faults
          2. Low Battery and UVLO
          3. Auto LED Turn Off Functionality
          4. Thermal Protection
      2. 7.3.2 Illumination
        1. Programmable Gain Block
        2. LDO Illum
        3. Illumination Driver A
        4. RGB Strobe Decoder
          1. Break Before Make (BBM)
          2. Openloop Voltage
          3. Transient Current Limit
        5. Illumination Monitoring
          1. Power Good
          2. Ratio Metric Overvoltage Protection
        6. Load Current and Supply Voltage
        7. Illumination Driver Plus Power FETS Efficiency
      3. 7.3.3 DMD Supplies
        1. LDO DMD
        2. DMD HV Regulator
          1. Power-Up and Power-Down Timing
        3. DMD/DLPC Buck Converters
        4. DMD Monitoring
          1. Power Good
          2. Overvoltage Fault
      4. 7.3.4 Buck Converters
        1. LDO Bucks
        2. General Purpose Buck Converters
        3. Buck Converter Monitoring
          1. Power Good
          2. Overvoltage Fault
        4. Buck Converter Efficiency
      5. 7.3.5 Auxiliary LDOs
      6. 7.3.6 Measurement System
      7. 7.3.7 Digital Control
        1. SPI
        2. Interrupt
        3. Fast-Shutdown in Case of Fault
        4. Protected Registers
        5. Writing to EEPROM
    4. 7.4 Device Functional Modes
    5. 7.5 Register Maps
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Typical Application Setup Using DLPA3000
        1. Design Requirements
        2. Detailed Design Procedure
        3. Application Curve
      2. 8.2.2 Typical Application with DLPA3000 Internal Block Diagram
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 SPI Connections
    4. 10.4 RLIM Routing
    5. 10.5 LED Connection
    6. 10.6 Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Device Nomenclature
    2. 11.2 Related Links
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Package Option Addendum
      1. 12.1.1 Packaging Information

Package Options

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

Design Requirements

An ultra-portable projector can be created by using a DLP chip set comprised of a DLP3010 (.3 720) DMD, a DLPC3433 or DLPC3438 controller, and the DLPA3000 PMIC/LED Driver. The DLPC3433 or DLPC3438 does the digital image processing, the DLPA3000 provides the needed analog functions for the projector, and DMD is the display device for producing the projected image. In addition to the three DLP chips in the chipset, other chips may be needed. At a minimum, a Flash part is needed to store the software and firmware to control the DLPC3433 or DLPC3438. The illumination light that is applied to the DMD is typically from red, green, and blue LEDs. These are often contained in three separate packages, but sometimes more than one color of LED die may be in the same package to reduce the overall size of the projector. For connecting the DLPC3433 or DLPC3438 to the front-end chip for receiving images, the parallel interface is typically used. While using the parallel interface, I2C should be connected to the front-end chip for inputting commands to the DLPC3433 or DLPC3438.

The DLPA3000 has five built-in buck switching regulators to serve as projector system power supplies. Two of the regulators are fixed to 1.1 V and 1.8 V for powering the DLP chipset. The remaining three buck regulators are available for general purpose use and their voltages are programmable. These three programmable regulators can be used to drive variable-speed fans or to power other projector chips, such as the front-end chip. The only power supply needed at the DLPA3000 input is SYSPWR from an external DC power supply or internal battery. The entire projector can be turned on and off by using a single signal called PROJ_ON. When PROJ_ON is high, the projector turns on and begins displaying images. When PROJ_ON is set low, the projector turns off and draws just microamps of current on SYSPWR.