MAX3601 Laser Driver for Projectors
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MAX3601GTL+T (pdf) |
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MAX3601CEVSYS# |
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MAX3601 Laser Driver for Projectors The MAX3601 laser driver for pico projectors supports video imaging with red, blue, and green lasers. Each output includes two 8-bit digital-to-analog converters DACs with programmable gain and up to 400mA driving capability per channel. DAC A has a full-scale current up to 320mA, while DAC B has full-scale current up to 80mA. All three channels can be combined into a single channel with up to 1.2A drive capability. Maxim’s patented technology allows pulsed current to operate lasers efficiently while reducing speckle. This feature operates from the video data clock. The driver is available in a 3.0mm x 3.5mm, 42-bump wafer-level package for commercial applications and a 5mm x 5mm, 40-pin TQFN package for industrial and automotive applications. RGB Pico Laser Projector Laser Light Source for LCOS Projectors High-Current LED or Laser Pulse Generator Ordering Information appears at end of data sheet. Benefits and Features S Integrates Three Current-Output Laser Drivers Compatible with Most Red, Blue, and Green Lasers 8-Bit Video DACs, DC to 167MHz operation Patented Pulsing Feature Reduces Laser Speckling 1ns Output Switching Time Pulse Switching Speed Enhancer S Minimizes PCB Area with Functional Integration SPI or I2C Serial Port Control 1.8V to 3.3V Operation 8-Bit Gain Adjustment Programmable Pulse Current 42-Bump WLP 3.0mm x 3.5mm and 40-Pin TQFN 5mm x 5mm Packages Integrated Temperature Sensor S Low Power Requirements < 80mW for Black Video Images Output Disable Using Video Marker Output Voltage Sensor S Laser Enable Function Supports Safety Compliance Simplified Functional Diagram CS 3-WIRE PORT DIO/SDA 3.3V OR 1.8V CMOS CLK/SCL SERIAL PORT GAIN SETTINGS VIDEO SETTINGS VIDEO DATA D[0:11] 1.8V CMOS DEMULTIPLEXER VIDEO CLOCK DCLK 1.8V CMOS 8 PIXEL CLOCK VIDEO MARK ENABLE MARKER 3.3V OR 1.8V CMOS EN_MAIN SUBPIXEL GENERATOR PULSE-OFF CONTROL LOGIC EN1..3 LASER DRIVER VIDEO OUTPUT 1 OUT1 LASER 1 +VA1 VIDEO OUTPUT 2 OUT2 LASER 2 +VA2 VIDEO OUTPUT 3 TEMP ALARM OUT3 LASER 3 +VA3 AVDD DVDD AVCC DVCC AGND DGND TESTA TESTB TESTC +1.8V +3.3V 0V For related parts and recommended products to use with this part, refer to: For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at MAX3601 Laser Driver for Projectors TABLE OF CONTENTS General Description 1 Applications 1 Benefits and Features 1 Simplified Functional Diagram 1 Absolute Maximum Ratings 6 Package Thermal Characteristics 6 Electrical Characteristics 6 Typical Operating Characteristics 15 Pin/Bump Configurations 18 Pin/Bump Description 19 Functional Diagram 21 Detailed Description 22 Video Demultiplexer 22 Demux A 22 Demux B 22 Demux C 23 Pulse Timing Generator 24 Subpixel Programming 25 Pulse-Off 25 Driver Outputs 26 Video DACs 26 Pulse-Off and Pulse-off Assist 28 Compliance Voltage Sensor 28 Temperature Alarm 29 Control Logic 29 Video Selection 29 Laser Control 29 Serial Port and Registers 30 I2C Interface 30 Data Transfer 30 START and STOP Conditions 30 Acknowledge 31 Slave Address 31 I2C Communication Protocols 31 Writing to a Single Register 32 Writing to Sequential Registers 32 Maxim Integrated 2 MAX3601 Laser Driver for Projectors TABLE OF CONTENTS continued Maxim Integrated 3 MAX3601 Laser Driver for Projectors LIST OF FIGURES Figure Test Circuit 13 Figure Video Test Pattern 13 Figure DCode Example 13 Figure Power-Supply Calculations 14 Figure Video Demultiplexer A Input Waveform 22 Figure Video Demultiplexer B Input Waveform 22 Figure Video C Demultiplexer Input Waveform 23 Figure Video C Demultiplexer 23 Figure Pulse Timing Generator 24 Figure Driver Output 26 Figure Driver Output Full-Scale Current Range 27 Figure Output Compliance Sensor 28 Figure Example Use of Compliance Sensor 28 Figure Temperature Alarm 29 Figure Video Marker 29 Figure I2C Master/Slave Configuration 30 Figure I2C Bit Transfer 30 Figure I2C START and STOP Conditions 30 Figure I2C Acknowledge 31 Figure I2C Timing Diagram 31 Figure I2C Writing 32 Figure I2C Reading 33 Figure AVDD, DVDD, and CS Timing for SPI Mode 34 Figure SPI Timing 34 Figure SPI Write Timing 35 Figure SPI Read Timing 35 Figure Power-Supply Sequencing 39 Figure Laser and Package Model 39 Figure Optional Compensation Components 40 Maxim Integrated 4 MAX3601 Laser Driver for Projectors LIST OF TABLES Table Subpixel Programming SP Register 25 Table Pulse-Off Duty Cycle POC_ Register 25 Table Random Pulse-Off Programming 25 Table Video Select Logic for DAC A 27 Table Video Select Logic for DAC B 27 Table Compliance Alarm Setpoint 28 Table Video Demultiplexer Selection Logic 29 Table Register Table 36 Table Typical Laser Diode Parameters 39 Table Detailed Register Table see Table 8 41 Maxim Integrated 5 MAX3601 Laser Driver for Projectors ABSOLUTE MAXIMUM RATINGS AVDD to +2.2V DVDD to +2.2V AVCC to +4.0V DVCC to +4.0V AVDD to +0.3V AVCC to +0.3V AGND to +0.3V OUT_ to +8.4V OUT_ Current Peak t < D0-D11, DCLK, TESTC to DGND....... -0.3V to lower of +2.2V or VDVDD + 0.3V CLK/SCL, DIO/SDA, CS, EN_MAIN, MARKER, TESTA, TESTB to DGND.................-0.3V to lower of +4.0V or VDVCC + 0.3V D0-D11, DCLK, SCL, SDA, CS, EN_MAIN, MARKER Current................. -50mA to +50mA Continuous Power Dissipation TQFN TA = +85°C, derate 35.7mW/°C above +85°C ...2320mW WLP TA = +70°C, derate 28.5mW/°C above +70°C ...2200mW Junction Operating Temperature Range -40°C to +105°C 0°C to +70°C Storage Temperature Range............................. -55°C to +150°C Lead Temperature soldering, 10s TQFN only ..............+300°C Soldering Temperature Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. PACKAGE THERMAL CHARACTERISTICS Note 1 TQFN Junction-to-Case Thermal Resistance BJC ..................2NC/W Junction-to-Ambient Thermal Resistance BJA ...........28NC/W Junction-to-Ambient Thermal Resistance BJA ...........36NC/W Note 1 Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to ELECTRICAL CHARACTERISTICS VAVDD = VDVDD = 1.7V to 1.9V, VAVCC = VDVCC = 2.9V to 3.5V, TA = TMIN to TMAX, TJ < +125NC, EN_MAIN and MARKER high, VOUT R 0.7V, unless otherwise noted. Typical values are at VAVDD = VDVDD = 1.8V, VAVCC = VDVCC = 3.3V, TJ = +85NC. Consumer grade parts are tested at TA = +70NC. Automotive grade parts are tested at TA = +105NC. Minimum and maximum specifications are guaranteed by design, characterization and/or production test. Note 2 PARAMETER CONDITIONS OPERATING CONDITIONS Output Voltage VOUT POWER SUPPLY Note 3, Figure 4 Output enabled +1.8V Supply Current Ordering Information PART TEMP RANGE PIN-PACKAGE MAX3601GTL+ -40NC to +105NC 40 TQFN-EP* MAX3601CWO+ 0NC to +70NC 42 WLP +Denotes a lead Pb -free/RoHS-compliant package. *EP = Exposed pad. Package Information For the latest package outline information and land patterns footprints , go to Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE 40 TQFN-EP 42 WLP PACKAGE CODE T4055N+1 W423E3+1 OUTLINE NO. 21-0140 21-0440 LAND PATTERN NO. 90-0103 Refer to Application Note 1891 Maxim Integrated 50 MAX3601 Laser Driver for Projectors 9/12 Initial release Updated the Electrical Characteristics table for IDVCC_G2B and IAVCC, Current at 1/13 OUT parameter, tH, and tRZ removed future status from the TQFN package in the Ordering Information table 5/13 Updated SDA Hold Time in Electrical Characteristics table, Table 2, and Figure 10 3/15 Updated the Absolute Maximum Ratings and Supply Filter section to meet customer requirements. PAGES CHANGED 7−10, 50 10, 25, 26 6, 39 Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values min and max limits shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 2015 Maxim Integrated Products, Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. |
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