_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Laser Driver for Projectors
MAX3600
General Description
The MAX3600 laser driver for projectors supports video
imaging with red, blue, and green lasers. Each output
includes a 10-bit video digital-to-analog converter (DAC)
with programmable gain and offset. For operation with
synthetic green lasers, the driver includes a periodic off
function and a fourth output with a random-noise generator.
The MAX3600B/R/G are monochrome drivers for blue,
red, and green lasers. The MAX3600A guarantees
higher full-scale output currents than the MAX3600, and
is recommended for new designs.
Applications
RGB Pico Laser Projector
Up to WXGA and 1080p Resolution Projectors
Monochrome Blue, Green, or Red Pico Laser
Projector
Features
S Integrates Four Current-Output Laser Drivers
S Compatible with Red, Blue, and Green Lasers
S 10-Bit Video DACs, fCLK = 1MHz to 160MHz
S 8-Bit Gain and Offset DACs
S 2ns Output Switching Time
S Serial Port Control
S Laser Enable
S Random-Noise Generator and Periodic Off
S 5mm x 5mm, 40-Pin TQFN Package (0.4mm Pitch)
19-4720; Rev 2; 8/10
Simplified Functional Diagram
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
†Not recommended for new designs.
††Future product—contact factory for availability.
Typical Operating Circuits and Pin Configuration appear at
end of data sheet.
MAX3600
MAX3600A
VIDEO1
SYNC
10-BIT VIDEO
3-WIRE BUS
OUTPUT ENABLE
OUT1
OUT2
OUT4
OUT3
VCCD +VCC
BLUE LASER
VCCA
EP
VEE_T, VEE
VA2
VA1
VA4
VA3
+VGREEN
+VRED
+VNOISE
+VBLUE
VIDEO DEMULTIPLEXER
SERIAL PORT
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
CLK
PO
REF
CS
SDA
SCL
CONTROL LOGIC
VM
EN_MAIN
OUTPUT 2
OUTPUT 1
VIDEO2
PRBS NOISE
GENERATOR OUTPUT 4
PERIODIC OFF
OUTPUT 3VIDEO3
RED LASER
NOISE DIODE
GREEN LASER
PART TEMP RANGE PIN-PACKAGE
MAX3600CTL+†0NC to +70NC40 TQFN-EP*
MAX3600ACTL+ 0NC to +70NC40 TQFN-EP*
MAX3600RCTL+†† 0NC to +70NC40 TQFN-EP*
MAX3600GCTL+†† 0NC to +70NC40 TQFN-EP*
MAX3600BCTL+†† 0NC to +70NC40 TQFN-EP*
Laser Driver for Projectors
MAX3600
2
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.
Supply Voltage Range, VCCA, VCCD ...................-0.3V to +4.0V
Voltage Range at VA1, VA2, VA4 ..........................-0.3V to +6.0V
Voltage Range at VA3 ..........................................-0.3V to +8.5V
Voltage Range at OUT1 ........................... -0.3V to (VA1 + 0.3V)
Voltage Range at OUT2 ........................... -0.3V to (VA2 + 0.3V)
Voltage Range at OUT3 ........................... -0.3V to (VA3 + 0.3V)
Voltage Range at OUT4 ........................... -0.3V to (VA4 + 0.3V)
Voltage Range (VA1 - VOUT1), (VA2 - VOUT2),
(VA4 - VOUT4) ......................................................... 0 to +6.0V
Voltage Range (VA3 - VOUT3) .................................... 0 to +7.5V
Voltage Range at D0 to D9, SYNC, CLK, PO, SCL, SDA,
CS, EN_MAIN, VM, REF, VEE_T, RES .. -0.3V to (VCC + 0.3V)
Current at OUT1, OUT2, OUT3, OUT4 ....................See Table 3
Current at D0 to D9, SYNC, CLK, PO, SCL, SDA,
CS, EN_MAIN, VM, REF, VEE_T, RES ......................... Q50mA
Current at REF ................................................................ Q0.5mA
Continuous Power Dissipation (TA = +70NC)
40-Pin TQFN (derate 35.7mW/NC above +70NC) ....... 2857mW
Storage Temperature Range ............................ -40NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
ELECTRICAL CHARACTERISTICS
(VCC = 3.3V Q5%, TA = 0NC to +70NC, TJ P +125NC, EN_MAIN high, VC_ R 0.9V, unless otherwise noted.) (Note 1, Equation 1)
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
VIDEO DAC (10 BITS)
Maximum Conversion Rate 100 160 Msps
Settling Time (Note 2) 4 ns
Rise/Fall Time (20% to 80%) (Note 2) 1 (4) ns
Analog Supply Voltage
VA1, VA2,
VA4 > 3.1 6.0
V
VA3 OUT3 enabled > 4.0 8.5
OUT3 disabled > 3.1 8.5
Compliance Voltage VC_ VC_ = VA_ - VOUT_ 0.5 (6.0) V
Analog Supply Current
(IVA - IOUT) (Note 3, Figure 8)
IDAC_G0 CLK static
OUT1 18 31
mA
OUT2 18 34
OUT3 19 26
OUT4 15 23
IDAC_G1 3
IDAC_G2 (30) 80
GAIN DAC (8 BITS): VIDEO_ = 3FFh
Minimum Full-Scale Current
(gs_ = 00h) GLOW
OUT1 (6) 12 (18)
mA
OUT2 (15) 40 (60)
OUT3 (3.5) 10 (15)
OUT4 (3) 10 (25)
Maximum Full-Scale Current:
MAX3600
(gs_ = FFh)
GHIGH +
GLOW
OUT1 175 227 (270)
mA
OUT2 550 690 (850)
OUT3 140 170 (200)
OUT4 140 185 (230)
Maximum Full-Scale Current:
MAX3600A/R/G/B
(gs_ = FFh)
GHIGH +
GLOW
OUT1 210 280 (330)
mA
OUT2 630 760 (955)
OUT3 140 170 (210)
OUT4 140 185 (300)
Laser Driver for Projectors
MAX3600
3
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3.3V Q5%, TA = 0NC to +70NC, TJ P +125NC, EN_MAIN high, VC_ R 0.9V, unless otherwise noted.) (Note 1, Equation 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Settling Time tSG To 5% of final value 10 (50) Fs
OFFSET DAC (8 BITS): VIDEO_ = 00h, gs_ = 00h
Maximum Offset:
MAX3600/A/R/G/B OSHIGH
OUT1 60 83 (110)
mAOUT2, OUT3 65 83 (110)
OUT4 120 155 (200)
Offset Error OSLOW VOUT1, VOUT2, VOUT4 = 1.6V;
VOUT3 = 2.5V -25 +0.2 +25 FA
Offset Settling Time tSO To 5% of final value 10 (50) Fs
LOGIC I/O: SDA, SCL, CS, VM, EN_MAIN
Input High Voltage VIH1 Operating condition VCC -
0.3
VCC +
0.3 V
Input Low Voltage VIL1 Operating condition -0.3 +0.3 V
Input Current SDA (write), SCL, CS -10 Q0.2 +10 FA
Input Resistance VM to VCCD 25 60 100 kI
EN_MAIN to VEE 25 60 100
Input Capacitance SCL, CS, SDA, VM, EN_MAIN (1) pF
Input Hysteresis 100 mV
Enable/Disable Time
From serial port load < 10
Fs
VMh to final value < 0.25
EN_MAINh to final value < 0.25
Disable Time tDIS EN_MAINi to IOUTi0.01 (1) Fs
Sink Current at SDA Read mode, VSDA = 0.6V 10 16 mA
VIDEO DATA INPUTS: D0 TO D9, CLK, SYNC, PO
Minimum Frequency fCLK_MIN 0.01 (1) MHz
Maximum Frequency fCLK_MAX (140) > 160 MHz
Clock Duty Cycle DDR clock, operating condition (45) (55) %
Standard clock, operating condition (42) (58)
Setup Time tSU Operating condition (0.8) ns
Hold Time tHOperating condition (0.8) ns
Input Switching Time Operating condition (10% to 90%) 1.5 ns
Input Voltage Range VIN -0.3 VCC +
0.3 V
Input High Threshold VIH2 Relative to VREF +170 mV
Input Low Threshold VIL2 Relative to VREF -170 mV
Reference Voltage VREF Operating condition 0.83 VCC/2 V
Data Input Capacitance CD0.4 pF
Termination Resistors RTT Figure 6 450 900 1500 I
REF Input Current IREF VREF = VCC/2 -5 -1.2 +5 FA
Propagation Delay D0:D9 to OUT_, pixel clocks 3
Laser Driver for Projectors
MAX3600
4
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3.3V Q5%, TA = 0NC to +70NC, TJ P +125NC, EN_MAIN high, VC_ R 0.9V, unless otherwise noted.) (Note 1, Equation 1)
Note 1: Parameters in parentheses ( ) are provided for guidance, but are not tested or guaranteed.
Note 2: Figure 1 shows the AC test circuit. Settling time is defined from the 50% point of a transition to the greater of Q5% of
IFINAL or Q1% of ISWITCH. Control register gs_ ≥ 34. See Figure 18.
Note 3: IDAC ≈ G0 + IDAC_G1 x VD + IOUT/IDAC_G2, where VD is the average video bit density (Dbits/ns) as shown in Table 1.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
PO GENERATOR
Pixel Clock Range for PO Operating condition 24 (102) MHz
Minimum PO Pulse Width Four subpixels 3.5 ns
PLL Bandwidth (560) 800 (1040) kHz
PRBS OSCILLATOR
PRBS Oscillator Frequency fPRBS1 fPIXEL = 24MHz to 102MHz (100) (150) MHz
SERIAL PORT: SDA, SCL, CS (Figure 14)
Maximum Clock Frequency fSCL Write mode (25) MHz
Input Edge Time 20% to 80% 5 ns
CS Leading Time tL(4) ns
SCL Pulse-Width High tCH 20 ns
SCL Pulse-Width Low tCL 20 ns
SCL to SDA Propagation Delay tD(10) ns
Data In Setup Time tDS (10) ns
Data In Hold Time tDH (10) ns
CS Trailing Time tT(10) ns
POWER SUPPLY: VCCA, VCCD
Supply Current
(IVCCA + IVCCD, gs_ = 80h,
os_ = 80h, fCLK = 75MHz)
IVCC1 VIDEO_ = 1F0h, CLK_SEL = 0,
output disabled 62 80
mA
IVCC2 CLK_SEL = 1, VIDEO_: 0 n 3FFh
repeating 65 90
IVCC2_ENLO Output disabled 60 (70)
POWER-ON RESET (Figure 15)
VCC for Chip Enabled VPOR1+ 2.9 V
Power-On Reset Parameters
VPOR2+ Voltage for output on VCC -
0.8
VVPOR2- Voltage for output off VCC -
0.9
VPOR3+ Voltage for output on 3.3
VPOR3- Voltage for output off 3.2
IC Power-Up Time 200 Fs
Laser Driver for Projectors
MAX3600
5
Table 1. Example Calculation of Video Bit Density
Figure 1. Test Circuit
MAX3600
MAX3600A
VCCA
VCCD
VA1
VA2
VA3
VA4
VCC
ICC
VA1
VA2
VA3
VA4
D1
D2
D3
D4
D5
D6
D7
D8
D9
CLK
SYNC
VM
PO
SDA
SCL
CS
D0
EN_MAIN
DATA
SOURCE
IA
VL1
OUT1
PROBE
4Ω
RCCC
VL2
OUT2
PROBE
2Ω
RCCC
VL3
OUT3
PROBE
20Ω
RCCC
VL4
OUT4
EP
VEE
VEE_T
VL1 = 2.2V, VL2 = 1.2V,
VL3 = 3.5V, VL4 = 1.6V
PROBE
3Ω
RCCC
PIXEL TIME (ns) VIDEO CODE DBITS VD
0 0 1111111111 — —
1 10 0000000000 10 1.0
2 20 0111111111 9 0.9
3 30 1000000000 10 1.0
4 40 1000000001 1 0.1
Laser Driver for Projectors
MAX3600
6
Typical Operating Characteristics
(VCC = 3.3V, TA = +25NC, EN_MAIN high, unless otherwise noted. VC_ = VA_ - VOUT_.)
VIDEO INL OUT3
MAX3600 toc09
VIDEO CODE
LSB
1000800600400200
-40
-30
-20
-10
0
10
-50
0
gs3 = FFh, TJ = +125NC, VC_ = 0.9V
gs3 = 20h, TA = -40NC
VIDEO INL OUT2
MAX3600 toc08
VIDEO CODE
LSB
1000800600400200
-40
-30
-20
-10
0
10
-50
0
gs2 = FFh, TJ = +125NC, VC_ = 0.9V
gs2 = 20h, TA = -40NC
VIDEO INL OUT1
MAX3600 toc07
VIDEO CODE
LSB
1000800600400200
-40
-30
-20
-10
0
10
-50
0
gs1 = FFh, TJ = +125NC, VC_ = 0.9V
gs1 = 20h, TA = -40NC
VIDEO DNL OUT3
(gs3 = 20h, TA = -40°C)
MAX3600 toc06
VIDEO CODE
LSB
1000800600400200
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
VIDEO DNL OUT2
(gs2 = 20h, TA = -40°C)
MAX3600 toc05
VIDEO CODE
LSB
1000800600400200
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2.0
-2.0
0
VIDEO DNL OUT1
(gs1 = 20h, TA = -40°C)
MAX3600 toc04
VIDEO CODE
LSB
1000800600400200
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
VIDEO DNL OUT3
(gs3 = FFh, TJ = +125°C, VC_ = 0.9V)
MAX3600 toc03
VIDEO CODE
LSB
1000800600400200
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
VIDEO DNL OUT2
(gs2 = FFh, TJ = +125°C, VC_ = 0.9V)
MAX3600 toc02
VIDEO CODE
LSB
1000800600400200
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2.0
-2.0
0
VIDEO DNL OUT1
(gs1 = FFh, TJ = +125°C, VC_ = 0.9V)
MAX3600 toc01
VIDEO CODE
LSB
1000800600400200
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
Laser Driver for Projectors
MAX3600
7
Typical Operating Characteristics (continued)
(VCC = 3.3V, TA = +25NC, EN_MAIN high, unless otherwise noted. VC_ = VA_ - VOUT_.)
TRANSFER FROM VA TO IOUT
MAX3600 toc18
VA FREQUENCY (Hz)
T (%/V)
100k10k1k
1
2
3
4
5
6
7
8
9
10
0
100 1M
gs_ = FFh, os_ = 0, VIDEO_ = 3FFh
T = DIOUT/IOUT x 100%/DVA_ (%/V)
OUT4
OUT2
OUT3
OUT1
TRANSFER FROM VCC TO IOUT
MAX3600 toc17
VCC FREQUENCY (Hz)
T (%/V)
1M100k10k1k
2
4
6
8
10
12
14
16
18
20
0
100 10M
OUT2
OUT3
OUT4 OUT1
gs_ = 80h, os_ = 40h, VIDEO_ = 1FFh
T = DIOUT/IOUT x 100%/DVCC (%/V)
OUT2 PO PULSE
(fCLK = 50MHz)
MAX3600 toc16
10ns/div
250mA/div
OFFSET INL
MAX3600 toc15
OFFSET CODE
LSB
2402001601208040
-6
-2
2
6
10
-10
0
OUT2, OUT3, OUT4
OUT1
gs_ = 00h, VIDEO_ = 00h
OFFSET DNL
MAX3600 toc14
OFFSET CODE
LSB
2402001601208040
-1.2
-0.4
0.4
1.2
2.0
-2.0
0
OUT1, OUT2, OUT3, OUT4
gs_ = 00h, VIDEO_ = 00h
GAIN INL
MAX3600 toc13
GAIN CODE
LSB
2402001601208040
-6
-2
2
6
10
-10
0
OUT2, OUT3
VIDEO_ = 3FFh
OUT4
OUT1
GAIN DNL
MAX3600 toc12
GAIN CODE
LSB
2402001601208040
-1.2
-0.4
0.4
1.2
2.0
-2.0
0
OUT1, OUT2, OUT3, OUT4
VIDEO_ = 3FFh
VIDEO INL OUT4
MAX3600 toc11
VIDEO CODE
LSB
1000800600400200
10
30
50
70
90
-10
0
gs4 = FFh, TJ = +125°C, VC_ = 0.9V
gs4 = 20h, TA = -40°C
VIDEO DNL OUT4
MAX3600 toc10
VIDEO CODE
LSB
1000800600400200
8
18
28
-2
0
gs4 = FFh
Laser Driver for Projectors
MAX3600
8
Typical Operating Characteristics (continued)
(VCC = 3.3V, TA = +25NC, EN_MAIN high, unless otherwise noted. VC_ = VA_ - VOUT_.)
OUTPUT FALL TIME
vs. COMPLIANCE VOLTAGE (VA_ - VOUT_)
MAX3600 toc23
VC_ (V)
FALL TIME (ns)
1.41.21.00.80.6
0.5
1.0
1.5
2.0
2.5
3.0
0
0.4 1.6
gs_ = FFh, os_ = 0
OUT1
OUT2 OUT3
OUT4
OUTPUT FALL TIME
vs. COMPLIANCE VOLTAGE (VA_ - VOUT_)
MAX3600 toc22
VC_ (V)
FALL TIME (ns)
1.31.10.90.7
1
2
3
4
5
6
0
0.5 1.5
gs_ = 40h, os_ = FFh
OUT2
OUT3
OUT1
OUT4
OUTPUT RISE TIME
vs. COMPLIANCE VOLTAGE (VA_ - VOUT_)
MAX3600 toc21
VC_ (V)
RISE TIME (ns)
1.41.21.00.80.6
1
2
3
4
5
6
0
0.4 1.6
gs_ = FFh, os_ = 0
OUT3
OUT2
OUT4
OUT1
OUTPUT RISE TIME
vs. COMPLIANCE VOLTAGE (VA_ - VOUT_)
MAX3600 toc20
VC_ (V)
RISE TIME (ns)
1.31.10.90.7
1
2
3
4
5
6
0
0.5 1.5
gs_ = 40h, os_ = FFh
OUT1 OUT2
OUT3
OUT4
NORMALIZED OUTPUT CURRENT
vs. COMPLIANCE VOLTAGE (VA_ - VOUT_)
MAX3600 toc19
VC_ (V)
NORMALIZED AMPLITUDE (%)
1.20.90.60.3
75
80
85
90
95
100
105
70
0 1.5
gs_ = FFh, os_ = 0
VIDEO IS SQUARE WAVE: 3FFh (HIGH), 0 (LOW)
OUT2
OUT3
OUT4
OUT1
Laser Driver for Projectors
MAX3600
9
Pin Description
PIN NAME FUNCTION
1 D0
Synchronous Video Data Inputs. D0 is the LSB; D9 is the MSB.
2 D1
3 D2
4 D3
5 D4
6 D5
7 D6
8 D7
9 D8
10 D9
11 SYNC Pixel Clock Input in Configuration 1. See the Typical Operating Circuits.
12 CLK Video Clock Input
13 RES Reserved for Future Use. Leave open.
14 OUT3 Connect to Blue Laser Anode. If unused leave open. Available on the MAX3600/A/B only.
15 VA3 Blue Laser Supply Voltage
16, 24, 32 VEE Ground Connections. Connect to 0V.
17 SDA Data I/O for Serial Port
18 CS Active-Low Chip Select
19 SCL Clock Input for Serial Port
20 EN_MAIN Laser Enable Input. When low, laser current is reduced (3.3V CMOS input with 60kI resistor to VEE).
21 VEE_T Test. Connect to VEE for normal operation.
22 VA4 Noise Diode Supply Voltage
23 OUT4 Connect to Noise Diode Anode. If unused, leave open. Available on the MAX3600/A/G only.
25, 27, 29 VA2 Green Laser Supply Voltage
26, 28, 30 OUT2 Connect to Green Laser Anode. If unused, leave open. Available on the MAX3600/A/G only.
31 N.C. No Connection. There is no connection from the package to the IC.
33 VM Video Marker Input. 3.3V CMOS input with 60kI pullup to VCCD.
34 VCCA 3.3V Analog Supply. Connect directly to VCCD.
35, 37 VA1 Red Laser Supply Voltage
36 OUT1 Connect to Red Laser Anode. If unused, leave open. Available on the MAX3600/A/R only.
38 VCCD 3.3V Digital Supply. Connect directly to VCCA.
39 REF Reference Threshold Voltage for Synchronous Inputs
40 PO
Periodic Off Video Data Input. If the periodic off feature is not used, connect the PO pin to ground
through a resistor. For periodic off on every pixel, connect PO to VCC through a resistor. (RPO ≈
2.2kI is suitable for all configurations. The resistor is optional, but reduces power.)
— EP Exposed Pad. The exposed pad must be connected to VEE.
Laser Driver for Projectors
MAX3600
10
Detailed Description
The laser driver for projectors supports video imaging
with red, blue, and green lasers. Each output includes
a 10-bit video DAC with programmable gain and offset.
OUTPUT1, OUTPUT2, and OUTPUT3 support opera-
tion with red, green, and blue lasers. OUTPUT4 and
the PRBS generator provide noise as required for cer-
tain synthetic green lasers. The MAX3600R (Figure 3),
MAX3600G (Figure 4), and MAX3600B (Figure 5) are
monochrome laser drivers.
Figure 2. MAX3600/MAX3600A Functional Diagram
D0
D1
REF
D2
D3
D4
D5
D6
D7
D8
D9
CLK
SYNC
PO
CLK
SYNC
PO
MAX3600
MAX3600A
VIDEO
OFFSET
GAIN
EN
os1
gs1
VSEL1 EN1
OUTPUT1
(RED)
OUT1
0
1
VIDEO
OFFSET
GAIN
EN
os3
gs3
fPIXEL
fPRBS
VSEL3 EN3
OUTPUT3
(BLUE)
OUT3
0
1
CLK_SEL
0
1
PRBS_SEL
0
1
VIDEO
OFFSET
GAIN
EN
os4
gs4
VM_ENi
ENi
PORi
OUT_ENi
VSEL4
PRBS
EN4
EN2
EN1
fPIXEL
EN3
EN4
fPIXEL
PO_M
po_srt
po_stp
PO_DIS
POR1
POR2
POR3
POR4
OUTPUT4
(NOISE)
OUT4
EN_MAIN
VM
VEE_T
VEE
1
0
os2
gs2
EN2
PERIODIC_OFF
PERIODIC_OFF
VIDEO
OFFSET
GAIN
ENAND
AND
ENABLE LOGIC (i = 1, 2, 3, 4)
OR
CONTROL LOGICVIDEO
BUFFERS
OUTPUT2
(GREEN)
OUT2
VCCD
VCCA
EP
VA2
VA1
VA3
VA4
+VCC
+VCC
+VGREEN
+VRED
+VBLUE
+VNOISE
VIDEO1
fPIXEL
PRBS_N
PO_M
VIDEO
DEMULTIPLEXER
PO
GENERATOR
PRBS
GENERATOR
PRBS
OSCILLATOR
SERIAL PORT POWER-ON
RESET
VIDEO2
VIDEO3
PO_M
PRBS_N
PO_DIS
po_stp
po_srt
VSEL1,3,4
OUT_EN1,2,3,4
gs1,2,3,4
os1,2,3,4
VM_EN1,2,3,4
fPRBS1
CS
SDA
SCL
NOTE: LOWERCASE ITALICS INDICATE A CONTROL REGISTER, UPPERCASE ITALICS INDICATE AN INTERNAL SIGNAL, HEAVY LINE INDICATES PARALLEL DATA.
D0:D9
fCLK fPIXEL
10
Laser Driver for Projectors
MAX3600
11
Figure 3. MAX3600R Functional Diagram
Figure 4. MAX3600G Functional Diagram
Figure 5. MAX3600B Functional Diagram
MAX3600R
D0
10
OUT1
EN_MAIN
VM
EP
VEE_T, VEE
VA3
VA2
VA1 +VRED
+3.3V
VA4
VCCA
VCCD
VIDEO
BUFFERS
SERIAL PORT CONTROL
LOGIC
D1
D2
D3
D4
D5
D6
D7
D8
D9
CS
SDA
SCL
PO
SYNC
CLK
REF
RED
LASER
VIDEO
OUTPUT1
NOTE: LOWERCASE ITALICS INDICATE A CONTROL REGISTER, UPPERCASE ITALICS
INDICATE AN INTERNAL SIGNAL, HEAVY LINE INDICATES PARALLEL DATA.
OFFSET
GAIN
EN
os1
gs1
EN1
MAX3600G
D0
10
OUT2
EN_MAIN
VM
VEE_T, VEE
EP
VA3
VA1
VA2 +VGREEN
+3.3V
VA4
VCCA
VCCD
VIDEO
BUFFERS
SERIAL PORT
PRBS NOISE GENERATOR
CONTROL
LOGIC
D1
D2
D3
D4
D5
D6
D7
D8
D9
CS
SDA
SCL
SYNC
CLK
REF
PO
GREEN
LASER
VIDEO
OUTPUT2
NOTE: LOWERCASE ITALICS INDICATE A CONTROL REGISTER, UPPERCASE ITALICS
INDICATE AN INTERNAL SIGNAL, HEAVY LINE INDICATES PARALLEL DATA.
OFFSET
GAIN
EN
os2
gs2
EN2
OUT4
NOISE
LASER
EN
OUTPUT4
OFFSET
GAIN
VIDEO
os4
gs4
EN4
MAX3600B
D0
10
OUT3
EN_MAIN
VM
EP
VEE_T, VEE
VA2
VA1
VA3 +VBLUE
+3.3V
VA4
VCCA
VCCD
VIDEO
BUFFERS
SERIAL PORT CONTROL
LOGIC
D1
D2
D3
D4
D5
D6
D7
D8
D9
CS
SDA
SCL
PO
SYNC
CLK
REF
BLUE
LASER
VIDEO
OUTPUT3
NOTE: LOWERCASE ITALICS INDICATE A CONTROL REGISTER, UPPERCASE ITALICS
INDICATE AN INTERNAL SIGNAL, HEAVY LINE INDICATES PARALLEL DATA.
OFFSET
GAIN
EN
os3
gs3
EN3
Laser Driver for Projectors
MAX3600
12
Video Input Buffers
The synchronous video data inputs (D0 to D9, SYNC,
CLK, and PO) are pseudo-differential. Each input is com-
pared to VREF, as shown in Figure 6.
D0 to D9, PO, and SYNC can be left open. SYNC can
be connected to REF if not used (for reduced power
consumption).
Video Demultiplexer
The video demultiplexer (Figure 7) can accommo-
date configurations as shown in the Typical Operating
Circuits. In Configuration 1 (Figure 19), 10-bit red, green,
and blue video data is time multiplexed. The SYNC sig-
nal is used to demultiplex the video data.
In Configuration 2 (Figure 21), each output driver uses
VIDEO2 as a data source.
Driver Outputs
The driver outputs provide currents to the lasers as
shown in Figure 8.
The transfer characteristic of the driver outputs is shown
in Figure 10 and Equation 1.
Equation 1:
HIGH HIGH
OUT LOW LOW
G gs OS os
VIDEO
I G OS
3FFh FFh FFh
××
−= + + +
where:
• Current into the laser driver is positive (out is negative)
• VIDEO is the 10-bit video input
• gs is the 8-bit gain setting register
• os is the 8-bit offset setting register
• GLOW is the minimum gain (mA)
• (GLOW + GHIGH) is the maximum gain (mA)
• OSHIGH is the maximum offset (mA)
• OSLOW is the minimum offset (mA)
The output compliance voltage (VC_ = VA_ - VOUT_,
Figure 9) defines the output voltage required to obtain
low overshoot and fast settling time.
Table 2 summarizes the typical output current capability
for each driver output. Table 3 summarizes the maximum
ratings for each driver output.
Figure 6. Video Inputs
Table 2. Driver Output Typical Parameter
Summary
Table 3. Driver Output Absolute
Maximum Ratings (Current Out of Part)
VDDQ
VIDEO DATA
(LVCMOS)
RTT
RT2RTT
RTT
REF
VDDQ/2
D0–D9,
CLK, PO,
SYNC
VIDEO BUFFER
VIDEO
PROCESSOR
MAX3600
MAX3600A
MAX3600R
MAX3600G
MAX3600B
PARAMETER OUT1
(mA)
OUT2
(mA)
OUT3
(mA)
OUT4
(mA)
Minimum Gain (GLOW) 12 40 10 10
Maximum Gain
(GLOW + GHIGH)227 690 170 185
Maximum Offset
(OSHIGH)83 83 83 155
PARAMETER OUT1
(mA)
OUT2
(mA)
OUT3
(mA)
OUT4
(mA)
DC Current
(TJ = +125NC) 320 735 245 310
DC Current
(TJ = +110NC) 480 1100 382 465
Peak Current
(t < 1Fs, TJ = +125NC) 640 1470 490 620
Laser Driver for Projectors
MAX3600
13
Figure 7. Video Demultiplexer
Figure 8. Driver Output
Figure 9. Output Compliance Voltage
Figure 10. Data to Output Characteristics
DQVIDEO1
D
Q
D
Q
D
Q
D Q
DQVIDEO2
DVIDEO3
D9:D0
CLOCK ON BOTH EDGES (DDR) CLOCK ON RISING EDGE
CLK
fPIXEL
SYNC
CLK_SEL
VIDEO DEMULTIPLEXER
0
1
GAIN (8-BIT)
VIDEO (10-BIT)
0
1
0
OFFSET (8-BIT)
EN
0
1
0
IDAC
GAIN
DAC
OFFSET
DAC
REFERENCE
VIDEO DAC
DRIVER OUTPUTS VA_
OUT_
OUT
LASER DRIVER
VA
IOUT
+VCC
IOUT (A)
VC (V)
TIME
VC = VA - VOUT
VA - VOUT
0
0
0
3FFh
GAIN
IOUT
OFFSET
DATA TO OUTPUT CHARACTERISTIC
VIDEO
0
GAIN CHARACTERISTIC
gs_ = FFh (GAIN = G
HIGH
+ G
LOW
)
gs_ = 0 (GAIN = GLOW)
3FFh
IOUT
VIDEO
OFFSET CHARACTERISTIC
0
3FFh
IOUT
OSHIGH os_ = FFh (OFFSET = osHIGH)
os_ = 0 (OFFSET = osLOW)
OSLOW
VIDEO
Laser Driver for Projectors
MAX3600
14
Control Logic
The control logic provides video selection, laser enable,
and power savings.
Video Selection
The video demultiplexer creates signals VIDEO1,
VIDEO2, and VIDEO3. The VSEL[1/3/4] bits can be used
to select the input video for OUTPUT1, OUTPUT3, and
OUTPUT4.
Laser Control
When EN_MAIN is low, all driver outputs are off. This
signal works asynchronously (no clock is required to
disable outputs).
The video marker (VM) input can be used to disable
selected outputs when a video signal is not present
(Figure 11). The VM_EN[1:4] bit settings determine
which outputs respond to the VM signal.
Propagation delay from VM↑ or EN_MAIN↑ to output
active is typically 35ns + 2/fPIXEL.
Periodic Off Generator
The periodic off (PO) generator quickly switches off
OUTPUT2. The PO event is placed within a pixel if PO is
set high during a pixel as shown in Figure 12.
The PO event location within the pixel is programmed
from the serial port. Each pixel is divided into “m” equal
time subpixels as shown in Figure 13. The PO_M setting
determines the number of subpixels, where:
m = (PO_M +1) x 8
The PO start and PO stop locations (in subpixels) are
defined by the P1, P1S, P2, and P2S bits.
Start Subpixel =
[(P1 + 1) MOD (PO_M + 1)] x 8 + P1S + 1
Stop Subpixel =
[(P2 + 1) MOD (PO_M + 1)] x 8 + P2S + 1
The start and stop locations should be selected to
ensure that the PO event occurs > one rise/fall time from
the pixel update. The minimum off-time is four subpixels.
Select P1, P2 P PO_M.
The PO oscillator frequency (fPO) = fPIXEL x (PO_M + 1).
The intended operating range for fPO is 133MHz to
200MHz.
Figure 11. Video Marker Figure 12. Periodic Off (PO) Example
VIDEO AREA
VM = 1
NONVIDEO AREA (VM = 0)
SELECTED OUTPUTS DISABLED
HORIZONTAL SCAN
VERTICAL SCAN
OUT2 (GREEN LASER CURRENT)
PO EVENT
TIME
1 1 00
PO
PIXEL 1 PIXEL 2 PIXEL 3 PIXEL 4
Laser Driver for Projectors
MAX3600
15
PRBS Oscillator
The PRBS oscillator creates clock fPRBS1, which can be
input to the PRBS generator. The oscillator frequency
is determined by the PRBS_N bit setting as shown in
Table 5. The recommended range for fPRBS1 is 100MHz
to 150MHz. Note that the PRBS oscillator is not phase-
locked to the pixel clock. Therefore, OUT4 updates are
not synchronous to the pixel clock when the PRBS oscil-
lator is used.
PRBS Generator
Output 4 can be used to generate random noise. A
32-bit shift register with feedback generates pseudo-
random codes. The PRBS_SEL bit selects the PRBS
clock source.
Serial Port and Registers
The serial port provides a 3-wire interface with bidirec-
tional data (SDA), clock input (SCL), and a chip-select
input (CS) as shown in Figure 14. Table 6 shows the
register addresses. The external master initiates a data
transfer by asserting the CS pin.
Write Mode (R/W = 0): The master generates 16 clock
cycles. It outputs 16 bits (MSB first) to the SDA line at the
falling edge of the clock. The master ends the transmis-
sion by setting CS high. The laser driver updates control
registers on the rising clock edge of the last data bit.
Read Mode (R/W = 1): The master generates 16 clock
cycles. It outputs 8 bits (MSB first) to the SDA line at the
falling edge of the clock. The SDA line is released after
the R/W bit has been transmitted. The slave outputs 8
bits of data (MSB first) at the rising edge of the clock. The
master ends the transmission by setting the CS pin high.
Read clock speed is determined by the external pullup
resistor and parasitic capacitance at the SDA pin.
Figure 13. PO Subpixels
Table 4. PO Subpixel Programming
Table 5. PRBS Oscillator
VIDEO2
IOUT2
SUBPIXEL
PO
TIME
PIXEL 2PIXEL 1
PO
START
PO
STOP
11
11 mm. ........ .........
tPIXEL
(ns) PO_M PRBS_N SUBPIXELS
(m)
fPRBS1
(MHz)
10 1 3 16 136
12 1 2 16 125
14 1 0 16 129
16 2 3 24 128
18 2 2 24 125
20 2 1 24 120
22 2 0 24 123
24 3 2 32 125
26 4 3 40 131
28 4 3 40 121
30 4 2 40 125
32 4 1 40 125
34 5 3 48 120
36 5 2 48 125
38 6 3 56 125
40 6 3 56 119
PRBS_N fPRBS1/fPO
0 0.9
1 0.8
2 0.75
3 0.68
Laser Driver for Projectors
MAX3600
16
Figure 14. Serial Port Timing Diagram
Table 6. Register Map
Note: Registers default to (0) at power-on (unless a different default value is noted).
CS
SCL
SDA
1 2 3 4 5 6 7 8
A6
9 10 11 12 13 14 150
1 2 3 4 5 6 7 8 9 10 11 12 13 14 150
A5 A4 A3 A2 A1 R/W D7 D6 D5 D4 D3 D2 D1 D0
CS
SCL
SDA A6 A5 A4 A3 A2 A1 R/W D7 D6 D5 D4 D3 D2 D1 D0
WRITE MODE
READ MODE
A0
A0
MSB LSB
tLtT
tT
tCH
tCL tDS
tDH
tDH
tDS tD
tCH
tCL
tL
ADDRESS NAME DESCRIPTION BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
00h os1 OUTPUT1 Offset MSB LSB
01h gs1 OUTPUT1 Gain MSB LSB
02h os2 OUTPUT2 Offset MSB LSB
03h gs2 OUTPUT2 Gain MSB LSB
04h os3 OUTPUT3 Offset MSB LSB
05h gs3 OUTPUT3 Gain MSB LSB
06h os4 OUTPUT4 Offset MSB LSB
07h gs4 OUTPUT4 Gain MSB LSB
08h enable Enable OUT_
EN1
OUT_
EN2
OUT_
EN3
OUT_
EN4 VM_EN1 VM_EN2 VM_EN3 VM_EN4
09h cnfig Video Data
Control X X X VSEL1 VSEL3 VSEL4 PRBS_
SEL
CLK_
SEL
0Ah osc Oscillator X X PRBS_N
MSB
PRBS_N
LSB PO_DIS PO_M
MSB PO_M PO_M
LSB
0Bh po_srt PO Start
Subpixels X X P1
MSB P1 P1
LSB
P1S
MSB P1S P1S
LSB
0Ch po_stp PO Stop
Subpixels X X P2
MSB P2 P2
LSB
P2S
MSB P2S P2S
LSB
Laser Driver for Projectors
MAX3600
17
Table 7. cnfig Register Bit Description
Table 8. osc Register Bit Description
Table 9. po_srt Register Bit Description
Table 10. po_stp Register Bit Description
BIT NAME DEFAULT DESCRIPTION
7:5 X 0 Unused.
4 VSEL1 0 Video select for OUTPUT1. 0 = VIDEO1, 1 = VIDEO2.
3 VSEL3 0 Video select for OUTPUT3. 0 = VIDEO3, 1 = VIDEO2.
2 VSEL4 0 Video select for OUTPUT4. 0 = PRBS, 1 = VIDEO2.
1 PRBS_SEL 0 PRBS clock source select. 1 = fPRBS1, 0 = fPIXEL.
0 CLK_SEL 1 Pixel clock source select. 0 = CLK pin, 1 = SYNC pin.
BIT NAME DEFAULT DESCRIPTION
7:6 X 0 Unused.
5:4 PRBS_N 0 PRBS oscillator configuration. See Table 5. Bit 5 is the MSB, and bit 4 is the LSB.
3 PO_DIS 0 Disables the output of the PO pulse generator. When the value is 1, no PO pulses
are created.
2:0 PO_M 1 PO oscillator control. See Table 4. Bit 2 is the MSB, and bit 0 is the LSB.
BIT NAME DEFAULT DESCRIPTION
7:6 X 0 Unused.
5:3 P1 1 These bits contain the P1 parameter used to program the PO start subpixel.
2:0 P1S 4 These bits contain the P1S parameter used to program the PO start subpixel.
BIT NAME DEFAULT DESCRIPTION
7:6 X 0 Unused.
5:3 P2 0 These bits contain the P2 parameter used to program the PO stop subpixel.
2:0 P2S 1 These bits contain the P2S parameter used to program the PO stop subpixel.
Laser Driver for Projectors
MAX3600
18
Power-On-Reset
The power-on reset monitors the supply voltages of
the circuit (Figure 15). It is recommended that VCC
be applied to the IC before VA1 to VA4 are applied as
shown in Figure 16. On power-down, it is recommended
that VA1 to VA4 are powered down before VCC. Failure
to follow the sequencing recommendation can result
in device stress, but has not been observed to cause
immediate damage.
Design Procedure
Supply Filter
Element CA (see the Typical Operating Circuits) is pres-
ent to reduce supply noise and provide a ground return
path for switched current. Select CA R 10FF. CA can be
composed of two or three capacitors in parallel.
Use care to ensure VA3 does not exceed +9V at any
time, including power-on, as this can damage the ESD
protection circuitry.
Compensation Network
Optional compensation elements RC and CC can be
used to compensate the inductive load of the laser
(Figure 17). The resulting filter reduces ringing and
increases the switching time of the laser driver. The best
values for RC and CC should be found by experimenta-
tion. Note that CC must be charged before light output
appears from the laser. If a compensation network is
used, minimize inductance in the ground return.
Typical starting values:
RC ≈ RL to 2 x RL (RL = Laser Resistance)
CC ≈ 1/(2G fVIDEO x RL)
Ringing of the green laser can be reduced with resistor
RD.
PCB Layout
Place the green laser as close to the laser driver as pos-
sible. The green laser typically has a small resistive com-
ponent and is more sensitive to inductance than other
laser connections. The green laser connection should
appear as a low-impedance transmission line. Use wide
traces located close to the ground plane for maximum
capacitance.
The connection from OUT2 to the laser should be as short
as possible, ideally < 1cm. The connection distance from
the laser cathode, across the ground plane, through the
filter capacitor, to VA2, is ideally < 1cm.
Figure 15. Power-On Reset
Figure 16. Power-Supply Sequencing
Figure 17. Optional Compensation Components
VPOR1
VCCA POWER-ON RESET
VA1
VPOR2
AND POR1
VA2
VPOR2
AND POR2
VA3
VPOR3
AND POR3
VA4
VPOR2
AND POR4
VOLTS
DATA AND CLOCK INPUTS
TIME
VA_
VCC
tVCC_ON (0.1µs)
OUT_
VA_
RDLASER
RC
CC
CA
+VA_
LASER
DRIVER
Laser Driver for Projectors
MAX3600
19
Consider the power supply on the VA_ pins. Droop on
these pins reduces the compliance voltage. Use two or
three capacitors to bypass VA_ to ground. Place a small
capacitor close to the VA2 pin to keep the ground return
loop small. A larger capacitor can be located farther
from VA_.
It is best to solder the laser to the PCB. If a con-
nector is required, minimize inductance. Inductance
> 10nH at OUT2 could cause large ringing. When routing
OUTPUT1 and OUTPUT2, route connections to the VA_
pins on the top layer, and connect the OUT_ pins to the
laser through vias.
Laser Driver Thermal Considerations
The circuit is designed to meet specifications with an
operating junction temperature (TJ) up to +125NC. The
junction temperature is estimated by:
TJ ≈ [(ICC)(VCC) + C (IVA_)(VC_)] BJA + TA
The recommended thermal path is through the pack-
age backside exposed pad (EP). A heatsink on the
package top does not significantly reduce junction
temperature. Recommendations for PCB design are
found in Application Note 862: HFAN-08.1: Thermal
Considerations of QFN and Other Exposed-Paddle
Packages.
Applications Information
Connecting OUT2 and OUT4
It is possible to connect OUT4 and OUT2 to achieve a
higher output current. There is a small delay on OUT4
relative to OUT2. Note that OUT4 linearity performance
is lower than OUT2 linearity.
Eye Safety
Specification IEC 825 defines the maximum safe output
of optical devices. This laser driver provides enable fea-
tures that aid compliance with IEC 825. Using this laser
driver alone does not ensure that a product is compliant
with IEC 825. The entire transmitter circuit and compo-
nent selections must be considered. Maxim products are
not designed for use as components in systems where
the failure of a Maxim product could create a situation
where injury could occur.
Table 11. Thermal Design Properties
Figure 18. Settling Time and Measurement
Note: 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 www.maxim-ic.com/thermal-tutorial.
IOUT
50%
TIME
SETTLING
TIME ISWITCH
IFINAL
PARAMETER SYMBOL VALUE
Ambient Temperature TA—
Operating Junction
Temperature TJP +125NC
Thermal Resistance,
Junction-to-Case BJC +2NC/W
Thermal Resistance,
Junction-to-Ambient,
Multilayer Board
BJA-2 +28NC/W
Laser Driver for Projectors
MAX3600
20
Configuration 1: RGB Laser Driver
with DDR Clock
Configuration 1 is described in Figures 19 and 20 and
Table 12.
• 10-bit video (D0 = LSB, D9 = MSB), DDR clock
• Data is multiplexed R-G-B (Figure 20)
• SYNC = 1 when blue data is on D0 to D9
• PO event occurs when PO = 1
Table 12. Configuration 1 Register Settings
Note: See the Detailed Description section for more informa-
tion about register programming.
Figure 19. Typical Operating Circuit: Configuration 1
Figure 20. Configuration 1: Video Data Format
Typical Operating Circuits
MAX3600
MAX3600A
EN_MAIN
CLK
SYNC
D0–D9
PO
REF
+1.8V TO +3.3V
ENABLE (3.3V CMOS)
VIDEO CLOCK (3.3V CMOS)
VIDEO SYNC (CMOS)
VIDEO (CMOS)
GREEN OFF* (CMOS)
VM
CS
SDA
SCL
*GREEN OFF AND VIDEO MARKER SIGNALS ARE OPTIONAL.
VEE
VEE_T
EP
VIDEO PROCESSOR
LASER DRIVER
VIDEO MARKER* (3.3V CMOS)
CHIP SELECT (3.3V CMOS)
SERIAL DATA (3.3V CMOS)
SERIAL CLOCK (3.3V CMOS)
VDDQ
VA1
OUT1
10
CC1
CA1
CA2
CA3
+VRED
VA4
OUT2
OUT4
+VNOISE
VA2
VCCA
VCCD
+VGREEN
RC1
CC2 RC2
RD2
RED LASER
VA3
OUT3
CC3
CA4
0.1µF
+VBLUE
+3.3V (VCC)
RC3
BLUE LASER
GREEN LASER
D0–D9
CLK
SYNC
VIDEO1
VIDEO2
VIDEO3
R R
G G
B B
PO
tSU tH
RGBRGBR
0010010
0100000
PIXEL 1 (WITH PO EVENT) PIXEL 2 (WITHOUT PO EVENT)
PIXEL
R = RED DATA, G = GREEN DATA, B = BLUE DATA.
BIT SETTING NOTES
VSEL1 0 VIDEO1 à red laser
VSEL3 0 VIDEO3 à blue laser
VSEL4 0 PRBS à noise diode
CLK_SEL 1 DDR clock with SYNC
OUT_EN[1:4] 1 Enable outputs
Laser Driver for Projectors
MAX3600
21
Table 13. Configuration 2 Register Settings
Note: See the Detailed Description section for more informa-
tion about register settings.
Configuration 2: Video Data
with RZ Clock
Configuration 2 is described in Figures 21 and 22 and
Table 13.
• 10-bit video (D0 = LSB, D9 = MSB)
• Return-to-zero clock
• Video data is always routed to VIDEO2, for constant
delay from clock to output
• Achieves highest possible resolution
Figure 21. Typical Operating Circuit: Configuration 2
POWER
ENABLE (3.3V CMOS)
SERIAL DATA (3.3V CMOS)
SERIAL CLOCK (3.3V CMOS)
VIDEO RED (CMOS)
VIDEO GREEN (CMOS)
VIDEO BLUE (CMOS)
CLOCK BLUE (CMOS)
CLOCK GREEN (CMOS)
CHIP-SELECT GREEN (3.3V CMOS)
CHIP-SELECT BLUE (3.3V CMOS)
GREEN OFF (3.3V CMOS)
CLOCK RED (CMOS)
CHIP-SELECT RED (3.3V CMOS)
VIDEO MARKER RED (3.3V CMOS)
VIDEO MARKER GREEN (3.3V CMOS)
VIDEO MARKER BLUE (3.3V CMOS)
VIDEO PROCESSOR
+VDDQ
OUT2
OUT4
CC2 RC2
RD2 GREEN LASER
NOISE
DIODE
MAX3600R
OUT2
OUT3
OUT4
SYNC
REFVDDQ/2
SERIAL PORT, EN_MAIN
CS
VM
D0–D9
CLK
LASER DRIVER 1
VCCA, VCCD
VA1 +VRED
VA2
VA4
VA3
VEE_T, VEE
EP
OUT1
PO
10
+VCC
RPO
RED LASER
MAX3600B
OUT1
OUT2
OUT4
SYNC
REFVDDQ/2
SERIAL PORT, EN_MAIN
CS
VM
D0–D9
CLK
LASER DRIVER 3
VCCA, VCCD
VA3 +VBLUE
VA1
VA2
VA4
VEE_T, VEE
EP
OUT3
PO
10
+VCC
RPO
BLUE LASER
MAX3600G
OUT1
OUT3
OUT4
SYNC
REFVDDQ/2
SERIAL PORT, EN_MAIN
CS
PO
VM
D0–D9
CLK
LASER DRIVER 2
VCCA, VCCD
VA2 +VGREEN
+VNOISE
VA4
VA1
VA3
VEE_T, VEE
EP
10
+VCC
LDD BIT VALUE NOTES
1 VSEL1 1 VIDEO2 à red laser
1 OUT_EN1 1 Enable OUT1
1, 2, 3 CLK_SEL 0 Select RZ clock
2OUT_EN2,
OUT_EN4 1Enable OUT2, OUT4
3 VSEL3 1 VIDEO2 à blue laser
3 OUT_EN3 1 Enable OUT3
Laser Driver for Projectors
MAX3600
22
Figure 22. Configuration 2: Video Data Format
Pin Configuration
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. 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.
tSU tH
D0–D9
CLK
V = VIDEO DATA.
VVIDEO2 V V
VVVV
PO 1 0 0 0
PIXEL WITH PO PIXEL WITHOUT PO PIXEL WITHOUT PO PIXEL WITHOUT PO
PIXEL
THIN QFN
(5mm × 5mm)
TOP VIEW
35
36
34
33
12
11
13
D1
D3
D4
D5
D6
14
D0
VA2
VA2
VEE
OUT2
VA2
OUT2
OUT4
VA4
1 2
VCCA
4 5 6 7
27282930 26 24 23 22
VA1
OUT1
CS
SDA
VEE
VA3
D2
OUT2
3
25
37
VA1 OUT3
38
39
40
VCCD
REF
PO
RES
CLK
SYNC
VM
32
15
SCL
VEE
31
16
17
18
19
20 EN_MAIN
D7
D8
D9 VEE_T
8 9 10
21
N.C.
*EP
*EXPOSED PAD.
MAX3600
MAX3600A
MAX3600R
MAX3600G
MAX3600B
+
PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
40 TQFN-EP T4055+2 21-0140 90-0002
Laser Driver for Projectors
MAX3600
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 23
© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 7/09 Initial release —
1 10/09 Corrected errors for SCL in Figure 14 16
2 8/10
Removed future status from the MAX3600A in the Ordering Information table; added
the soldering temperature to the Absolute Maximum Ratings section; in the Electrical
Characteristics table updated the analog supply voltage and analog supply current
values, added compliance voltage, updated maximum offset values, and added
propagation delay; corrected the equation in Note 3; corrected the units for VD in
Table 1; replaced Figure 7; added the land pattern no. to the Package Information
table
1–5, 13, 22
