TB62727FN MARKTECH | Alldatasheet
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Features
*Output current capability and the number of outputs : 60 mA x 16 outputs *Constant current range : Iout = 2 to 50 mA *Application output voltage : Vout (on)=< 4.0V *For anode common LED *Input signal voltage level : TTL Level (Shmitt Triggered Input) *Power supply voltage range : VDD=4.5 to 5.5V *Maximum output terminal : voltage VOUT(off)=17V *Data transfer clock : fCLK=20 MHz (cascade connection) *Operation temperature range : Topr = -40 to 85 degrees *Package : P-SSOP30-300-0.65 *Adjustment functions : ( Input 128 times clock and serial-data.) 6-bit dot current correction : This function corrects the current value of each output from 0% to 100% in 64 steps *Current accuracy (dot-current correction not used) Output voltage Current accuracy between bits between ICs Output current => 0.4V +/- 4 % +/- 15 % 2 to 5 mA +/- 12 % 5 to 50 mA TB62727FN P-SSOP30-300-0.65 Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters
3 Northway Lane North
Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office:
950 South Coast Drive, Suite 265
Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
*Protection function circuits : 1: Thermal Shutdown Detection (TSD) This function monitors the rise in temperature of the junction. Junction temperatures over 140 degrees - - - Monitor TSD terminal = "L". 2: Output terminal open detection function This function detects output terminal open- - - Monitor ODD terminal = "L". The TSD terminal and OOD terminal are open collector type. Warnings Short-circuiting an output terminal to GND or to the power supply terminal may damage the device. Please take the proper precautions when wiring the output terminals, power supply terminal and GND terminals ( VSS, VSS2 ). Pin Assignment (TOP VIEW) TSD DATA-SEL VSS S-IN CLOCK LATCH VSS2 OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OOD SSYNC VDD R-EXT S-OUT OUT ENABLE VSS2 OUT15 OUT14 OUT13 OUT12 OUT11 OUT10 OUT9 OUT8 Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Block diagram ( whole figure ) Action table 1 (OUT ENABLE) OUT ENABLE Action for outputs H Output off L Output on Action table 2 (SSYNC) SSYNC Action of S-OUT H Synchronizes for positive edge of CLOCK. L Inverted S-OUT CLK SSYNC OUT15 REXT LATCH DATA-SEL S-IN S-OUT OUT ENABLE Register-1: The set up of current correction and main current. Register-2: The set up of output on/off. 128 bit shift registers & latches D L SO(Data128) Data127 Data1~Data128 OOD TSD TSD OUT 0 6 bit DAC. for current correction Constant current output VSS2 OOD CIN matrix for output speed up VSS VSS Delay 0 Delay 15 CIN matrix for output speed up 6 bit DAC. for current correction 16-bit shift registers & latches D L SO Data1~Data16 Constant current output Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
The connection of the delay to decrease switching noise : Delay 0 ~ Delay 15 The total current and each output waveform of TB62727 Out00 Out01 Delay Out15 x15 x 1 Delay Delay OUT ENABLE The signal of output on/off data The delay circuit is used on the output to decrease the level of noise. The delay of total current when turn on. OUT-ENABLE Out 00 50% 01 02 Out 00 01 02 50% The delay of total current when turn off. The total current of a TB62727. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Action table 3 for DATA-SEL DATA-SEL Action of DATA-SEL (CLK and LATCH signal select a register.) H Select input for output current correction data L Select input for output turns on/off data Action table 4 ( Output current correction data ) - - - Register - 1(REG1) Serial data for each output when DATA-SEL equal to H level. Data1~8 Data9~16 Data17~24 Data25~32 Data33~40 Data41~48 Data49~56 Data57~64 for OUT 0 for OUT 1 for OUT 2 for OUT 3 for OUT 4 for OUT 5 for OUT 6 for OUT 7 Data65~72 Data73~80 Data81~88 Data89~96 Data97~104 Data105~112 Data113~120 Data121~128 for OUT 8 for OUT 9 for OUT10 for OUT11 for OUT12 for OUT13 for OUT14 for OUT15 Setup of data of each output with 8-bit Data. - - - Example Data 1-8 for OUT00 Data 8 Data 7 Data 6 Data 5 Data 4 Data 3 Data 2 Data 1 Don't care Don't care x 32 x 16 x 8 x 4 x 2 x 1 Note 1 : When all data are L, each output current is almost 0. Action table 5 ( Output turns On & Off control ) - - - Register-2(REG2) Serial data for each output when DATA-SEL equal to L level Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Data 8 for Out 0 for Out 1 for Out 2 for Out 3 for Out 4 for Out 5 for Out 6 for Out 7 Data 9 Data 10 Data 11 Data 12 Data 13 Data 14 Data 15 Data 16 for Out 8 for Out 9 for Out10 for Out11 for Out12 for Out13 for Out14 for Out15 Note 2 : When data is H, each output is on. and when data is L, each output is off. Note 3 : The data must be H's to obtain output current. Action table 6 - - - Register-1(REG1) Main output current is set to the IC when DATA-SEL equal to H level. Data 1~126 Data 127 Data 128 Output current standard of set value The effect condition of the speed-up Don't care L L 2.5 mA (Initial) Low Don't care L H 5 mA Middle Don't care H L 15 mA High Don't care H H 25 mA More high Note 4 : This LED current set up only uses 2-bits on the MSB side of OUT15's data. The rise time (tr) of the current waveform decreases when the effect condition of the speed up is set high or greater. Note 5 : When data set up LED current to TB62727FN, the output waveform becomes stable. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Constant current adjustment range ( image ) GRAPH: Current adjustment based on 100% Note 6 : * Dot correction function is the current adjustment function of each output. * The current value set by REXT resistance is set in the standard (Equal to Data=MSB and 100%). * The fineness of current value set is 1LSB; about equal to 1.58 %. * Wide set range (100-0%), with presumed brightness dispersion of LED +/- 20 %. * We recommend dot correction is set in the center of the range. And, do +/- 50% range of the re-correction after choosing current with REXT. * Line A shows the case that 50mA was applied to the standard current. * Line B shows the case that 25mA and Line C shows the case that 10mA. * Set range that it is recommended is current value inside the slant line area including the dot correction. * Dot correction accuracy is not good below 5mA. Action table 7 - - - Dot current correction rate of the Serial-data of Register-1. (typ.) Data LLLLLL LLLLLH Ratio of correction (Output off) 1.58% Ratio of a LSB nearly equal to 1.58 % HHHHHL HHHHHH HLLLLL 98.42% 100% Initial position (when supply in) Note 7 : This value is typical values. The actual values contains the error of lower than +/- 1LSB. The initial values are about 50%. Set range of Dot Correction(6bit) 0% 100% to Iout [ mA ] 5 [mA]
64 Steps
(A) (B) 2 [mA] (C) This point is set current by REXT to Iout formula. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Terminal function explanation table No. Terminal name I/O Intern al-R Function explanation TSD O Extern al This is TSD monitor terminal and open collector output. TSD circuit detects unusual temperature when connected to pull-up resistance. DATA-SEL I Pull- Down Serial data selection signal input terminal. See Action Table 3 and 4. VSS P Logic ground terminals. Please, must use all. S-IN I Serial data input terminal. Data is transfer by rising edge of CLK. CLK I Serial data transfer clock input terminal. LATCH I Pull- Down Serial data latch signal input terminal. Data is held by rising edge. 7, 24 VSS2 P Ground terminals. OUT0 to OUT15 O LED drive output terminals. Connect cathode of LED. OUT ENABLE I Pull -Up Control signal input terminal of output OUT0 ~ OUT15. See Action Table 1. S-OUT O Serial data output terminal. Output data trigger are select with SSYNC signal. REXT P Connection terminal of the standard current set resistance. VDD P Logic power supply terminals. SSYNC I Pull -Up Serial data output polarity set terminal. See Action Table 2. OOD O Extern al This is OOD monitor terminal and open collector output. OOD is output open detected when connected to pull-up resistance. Note 8 (Terminal attribute) : P : Power supply/ground/others, I : Input terminal, O : Output terminal. Note 9 : We recommend the use of a pull up/down resistor on open terminal. There is a risk of faulty operation due to noise if the therminal is open. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
How to use the TB62727FN LED Driver Step 1 - Prepare the default dot-current-correction data. Step 2 - First, a DATA-SEL terminal is made Lo, and Hi is input with the CLK signal from the S-IN terminal, and then data are held at the LATCH signal.Output can be turned on with this by setting the OUT-ENABLE signal. Step 3 - Next, a DATA-SEL terminal is made Hi, and dot compensation data for each output are input from the S-IN terminal, and then data are held at the LATCH signal. The current value of the output is established with this, too. Step 4 - After that, input to the PWM pulse from OE terminal. Step 5 - After that, replay to Step 2 and Step 4. Operating outline to use Output On/Off control mainly for Uni-Color and Tri-Color. default dot current correction data Input for the Output On/Off data S-IN CLK LATCH OE DATA-SEL for Out15 for Out14 for Out13 for Out2 for Out1 for Out0 Input for the dot current correction data Note 11 : OE means OUT-ENABLE. Note 10 : The default data is changed when the brightness is changed. The repetition inputs for the output on/off data. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
How to use the TB62727FN LED Driver Step 1 - Prepare the default output On-data for outputs. Step 2 - First, the DATA-SEL terminal is made Hi, and the dot compensation data of the default are input with the CLK signal from the S-IN terminal, and then data is held at the LATCH signal. All the output was set up in the current value which was the same with this. (The errors are between the bits.) . Step 3 - Next, the DATA-SEL terminal is made Lo, and data for output on/off are input from the S-IN terminal, and then data are held at the LATCH signal. Output can be turned on with this at the OUT-ENABLE signal Lo. Step 4 - After that, input to the PWM pulse from OE terminal. Step 5 - After that, replay to Step 2 and Step 4. Operating outline to use output current correction control mainly for full-color. default output On data Input for the Output On/Off data Note 12 : OE means OUT-ENABLE. Note 13 : The default data is changed when the brightness is changed. S-IN CLK LATCH OE DATA-SEL for Out15 for Out14 for Out13 for Out2 for Out1 for Out0 Input for the dot current correction data The repetition inputs for the output current correction datas. Output correction data Input CLK signal are 16 times. 16 times are input to each output, and CLK inputs 128 times in the total. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Equivalent input and output schematics 1. Input terminal with the pull up resistor /OUT-ENABLE, SSYNC IN VDD GND VDD GND R(UP)=200k R(DOWN)=200k 100 2. Input terminal with the pull down resistor /LATCH, DATA-SEL 100 IN VDD GND VDD GND 3. Input terminal CLK, S-IN 100 4. Output Terminal S-OUT 100 OUT IN 5. Protection circuit monitor terminal TSD, OOD TSD, OOD VSS2 OUT 0 to 15 6. Constant current output terminal VSS Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
-0.3 to 6 Constant current output voltage VO -0.3 to 17 V Output current IOUT + 60 mA/bit Logic output voltage VOUT -0.3 to VDD Logic input voltage VIN -0.3 to VDD+0.3 V VSS2 current in total IVSS2 960 mA All other Max Ratings are based on Max VSS2 current. If IVSS2 is less than IVSS2 Max, all other ratings may change Power dissipation Pd 1.25 110 * W On PCB. No wind. Saturation heat resistance of package Rth(j-a) 90 Rth(j-c) 40 max degree/ W On PCB. Wind upper 1.0m/sec. This is reference value. This is reference value. Operating temperature Topr -40 to 85 Storage temperature Tstg -55 to 150 degree Note 14 : * Subtract 9.0 mW/degree from the maximum rating value about 1º if operation temperature exceeds 25º when on PCB with dimension: 50 x 50 x 1.6mm Cu40%. Note 15 : ** This is reference value. The actual value varies greatly depending on the mounting condition. We recommend measuring to obtain accurate results. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Recommended operating condition (VDD=4.5~5.5V, Topr = -40~85 degree, unless otherwise noted.) DC characteristic Symbol Condition & terminal Min Typ Max Unit Supply voltage VDD 4.5 5.0 5.5 High level input voltage VIH Low level input voltage VIL CLOCK, S-IN, LATCH /OUT-ENABLE, SSYNC, DATA-SEL VDD VDD+0.3 VSS-0.3 VSS 0.8 V High level output current IOH Low level output current IOL S-OUT S-OUT, TSD, ODD mA Constant current output IOUT OUT0 to OUT15 +50 mA/bit Output voltage VO OUT0 to OUT15 off. +17 VOH TSD, ODD V Operating temperature Topr -40 +85 degree AC characteristics Symbol Condition & terminal Min Typ Max Unit Clock frequency fCLK cascade connected, CLK MHz Minimum pulse width twH1/twL1 /OUT-ENABLE 250 twH2/twL2 /LATCH twH3/twL3 CLOCK 20 twH4/twL4 DATA-SEL Setup time tsetup1 S-IN to CLOCK 20 tsetup2 CLOCK to /LATCH 20 Hold time thold1 S-IN to CLOCK thold2 CLOCK to /LATCH Blank time t blank DATA-SEL to CLOCK 20 ns Note 16 : ** The value is fixed by the ability of device tester. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Electrical characteristics 1 ( Typ:VDD=5V, Topr=25degree, Min/Max:VDD=4.5~5.5V, Topr=-40~85 degree ) Parameter Symbol Test condition & terminal Min Typ Max Unit High level output voltage VOH IOH=-1mA, S-OUT VDD-0.4 Low level output voltage VOL IOL=1mA, S-OUT 0.4 IOL=+1.0mA, TSD,OOD 0.4 V Input current Ii All terminals without pull up/pull down resistor. +/-1 Supply current Idd(off) CLOCK="L", S-IN="L", OUT-ENABLE="L", Set condition *0a 1.3 Idd(on)1 CLOCK=20 MHz, S-IN=1/2 CLOCK Set condition *1a 5.5 Topr=-40degree, Other condition is same above. Idd(on)2 CLOCK=20 MHz, S-IN=1/2 CLOCK Set condition *2a Topr=-40degree, Other condition is same above. Idd(on)3 CLOCK=20 MHz, S-IN=1/2 CLOCK Set condition *3a Topr=-40degree, Other condition is same above. Idd(on)4 CLOCK=20 MHz, S-IN=1/2 CLOCK Set condition *4a Topr=-40degree, Other condition is same above. uA mA Electrical characteristics current set condition ( Topr=25 degree, VOUT=0.4V unless otherwise noted ) No. Set condition Dot correction data It is equivalent to IOUT. *0a Output all off, VOUT=Open, REXT= Open "XXLLLLLL" IOUT=0 mA *1a OUT-ENABLE="L", All output on, VOUT=Open, REXT= 7.4k ohm *2a OUT-ENABLE="L", All output on, VOUT=Open, REXT= 3.6k ohm *3a OUT-ENABLE="L", All output on, VOUT=Open, REXT= 1.2k ohm *4a OUT-ENABLE="L", All output on, VOUT=Open, "XXHLLLLL" (This is initial value.) IOUT=2.55 +/-15% mA IOUT=5.1 +/-12% mA IOUT=15 +/-12% mA IOUT=24 +/-12% mA *5a REXT= 740 ohm "XXLLLLLL" IOUT=46 +/-12% mA Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Electrical characteristics 2 ( Typ:VDD=5V, Topr=25degree, Min/Max:VDD=4.5~5.5V, Topr=-40~85 degree ) Parameter Symbol Test condition Min Typ Max Unit Constant Current Output (within current Accuracy between bits) IO1 Set condition *1b 2.17 2.55 2.93 IO2 Set condition *2b 4.49 5.1 5.71 IO3 Set condition *3b 13.2 16.8 IO4 Set condition *4b 21.12 26.88 IO5 Set condition *5b 40.48 51.52 mA/bit Constant current output depends on temperature %TOPR Set condition *4b. VOUT=1V, Topr is changed from -40~85 degree. +-50 +-80 mA/ degree Leakage current of the constant current output IOLK Set condition *0b, VOUT=17V 0.05 0.1 mA/bit Constant Current Accuracy between bits dIOUT1 Set condition *2b +/-1.5 +/-4 dIOUT2 Set condition *3b +/-1.5 +/-4 dIOUT3 Set condition *4b +/-1.5 +/-4 Constant current output depends on output voltage %VOUT VDD=5.0V, Set condition *4b, VOUT is changed from 0.7~3V. +/-5 +/-8 Constant current output depends on supply voltage %VDD Set condition *4b, VDD is changed from 4.5~5.5V +/-1 +/-2 thermal shutdown detection temperature Tsd 140 degree Output open detection voltage Vood OOD 0.04 VDD V Pull up/down resistor Rup / Rdw 100k 200k 400k ohm Electrical characteristics current set condition ( Topr=25 degree, VOUT=0.4V unless otherwise noted ) No. Set condition Dot correction data Set for output current (typ) *0b Output all off, VOUT=Open, REXT= Open "XXLLLLLL" IOUT=0 mA *1b OUT-ENABLE="L", All output on, REXT= 7.4k ohm *2b OUT-ENABLE="L", All output on, REXT= 3.6k ohm *3b OUT-ENABLE="L", All output on, REXT= 1.2k ohm *4b OUT-ENABLE="L", All output on, REXT= 740 ohm "XXHLLLLL" (This is initial value.) IOUT=2.55 +/-15% mA IOUT=5.1 +/-12% mA IOUT=15 +/-12% mA IOUT=24 +/-12% mA *5a "XXLLLLLL" IOUT=46 +/-12% mA Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
(Typ : VDD=5V, Topr=25degree, CL=50pF, Min/Max : VDD=4.5 to 5.5V, Topr=-40 to 85degree, CL=50pF Refer to TEST CIRCUIT ) Characteristics Symbol Test condition Min Typ Max Unit Rise time tr OUT 0 to OUT15 *75 Fall time tf OUT 0 to OUT15 *60 Propagation delay tpHL1 /OUT-ENABLE -> OUT 0 *20 *100 tpHL2 /LATCH -> OUT0, /OUT-ENABLE=”L” *20 *100 tpHL TRD, OOD with pull up resistor, R(up)=10k ohm 180 tpLH1 /OUT-ENABLE -> OUT 0 *20 *100 tpLH2 /LATCH -> OUT0, /OUT-ENABLE=”L” *20 *100 tpLH TRD, OOD with pull up resistor, R(up)=10k ohm 370 t pd CLOCK -> S-OUT, See figure 1 SSYNC = "L" SSYNC = "H" Output skew by delay circuit tDLY(on)1 tDLY(off)1 *15 tDLY(on)2 tDLY(off)2 OUT0~OUT15 * 100 225 500 ns Note 17 : This value may change depending on external circuitry. The delay test is used to determine the difference in time of OUT0-OUT15. * This is a guarantee value based on the circuits design. 50 ns (fCLK=20MHz) CLOCK S-OUT (SSYNC="H") S-OUT (SSYNC="L") Figure 1 : CLOCK to S-OUT Function tpd tpd tpd tpd tpd tpd Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
/OUT ENABLE CLOCK /LATCH S-IN DATA-SEL SSYNC VDD CL VL = 3.5 V VSS Iref Function Generator VDD = VIH = 5 V VIL = 0 V, tr = tf = 10 ns (10% ~ 90 %) Logic input waveform OUT 15 VIH VIL RL = 100 ohm RL = 100 ohm Iout Vce tr tf 90% 10% OOD TSD RL = 10k ohm VDD = 4.5 ~ 5.5 V Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Operating explanation and truth value table Action table 8 - - - The transfer of the dot correction data : Step S-IN CLK LATCH Operating and function H or L Positive edge L Input positive edge of CLK 128 times and transfer data to all the shift registers. L Positive edge Input positive edge of LATCH once and make register hold data. Figure 2-1 : Serial data transfer timing ( for example of 1 device.) Figure 2-2 : Serial data transfer timing ( for example of cascade connect.) SO DATA synchronizes in 128th clock, and 1'st data is out. Clock input of 128 times and data input, after that, hold data by 1 positive edge of LATCH of 1 driver. S-IN CLK LATCH S-OUT correction data for OUT15 Show logic unfixed condition before the input after resetting. correction data for OUT0 x : Don't care x x x x Clock input of 256 times and data input, after that, hold data by 1 positive edge of LATCH of 2 driver. S-IN CLK LATCH S-OUT dot correction data for OUT15 dot correction data for OUT0 dot correction data for OUT15 dot correction data for OUT0 SO DATA synchronizes in 128th clock, and 2'nd data is out. x : Don't care of output current correction. x x x x x x x x Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Operating explanation and truth value table Action table 9 - - - Thermal detection function (It can be monitored with the TSD terminal.) Perform temperature detection as described below. Junction Temp [degree] TSD OUT0 to OUT15 Function -40 to 140 off over 140 on Normal operation When temperature decreases, TSD is canceled automatically. When chip temperature reaches the following range, the TSD terminal is on. Output is not turned off. Action table 10 - - - Output open detection function (It can be monitored with the OOD terminal.). Perform open output detection as described below. Output Voltage [V] OOD Function >=VDD X 0.04 Off =<VDD X 0.04 On Output opening is detected by the following voltage, the OOD terminal is on. Figure 2 : The block diagram of the protection circuit 2 OUT0 to OUT15 TSD (Open collector Type) Constant Current Outputs TSD OOD OOD (Open collector Type) Connecting a lowpass filter is recommended to weaken sensitivity. Error detection only works with OOD and the TSD circuit. IC Chip Pull up is recommended. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Logic input and output timing wave form (1) 1. CLOCK vs S-IN 2. DATA-SEL vs CLOCK , CLOCK vs /LATCH t setup t hold tpd 50% 50% 50% 50% 50% 50% 50% CLOCK S-IN twH3 twL3 S-OUT tpd 50% 50% 50% 50% twH4 tblank 50% CLOCK DATA-SEL twL4 tblank /LATCH tsetup2 twH2 thold2 50% 50% Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Logic input and output timing wave form (2) 3. /OUT-ENABLE vs OUT0 4. /LATCH vs OUT0 50% 50% 50% OUT-ENABLE twH1 OUT 0 50% 50% 90% twL1 tpHL1 tpLH1 Delay is added to other output. 10% tf 90% 10% tr On Off 50% /OUT ENABLE OUT 0 tpHL2 Delay is added to other output. /LATCH 50% tpLH2 50% 50% On Off Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Duty Cycle [%] Constant Current Output [mA] Case1 Case2 Case3 DUTY - IOUT On PCB 16bit activate, Vce=1.5V, Topr=25degree 100 Duty Cycle [%] Constant Current Output [mA] Case1 Case2 Case3 DUTY - IOUT On PCB 16bit activate, Vce=0.7V, Topr=25degree Ambient Temperature [degree] 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.1 1.2 1.3 1.4 1.5 1.6 Power dissipation PD (W/IC) Case3 Case2 Case1 Ta - Pd 100 1000 10000 REXT(Ohms) IOUT(mA) Topr=25degree REXT - IOUT VCE=0.4V, Topr=25degree When current correction is 32 of 63step. IOUT (mA) = 1000 * 0.46 * Dot correction rate * (1.15 / REXT ) NOTE :This is reference value. Case1: Velocity of the wind is 0m/s. Case2: Velocity of the wind is 1m/s. Case3: Velocity of the wind is 2m/s. Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
APPENDIX - (A) : Decrease in Power Dissipation of the LED Driver. This driver operates with VCE >= 0.4V. If there is a change in VF of the LED, VCE may increase, thus increasing the Junction Temp. of the driver. When using full color LEDs, we recommend connecting a diode on a common line of red LEDs. Emitting color of LED VF of LED LED Supply VDS of FET 1S1830 VCE of IC Red 1.8 to 2.2V 3.3V / 5V Blue Green 3.5 to 4V About 0.5V 1.2V 1.1~1.5V 0.5~1V TB62727FN LED Supply VSS2 OUT- ENABLE PWM Pulse Output enable signal OUT0 OUT15 1/16 column V Ideally, Vce=0.4V~1.5V Exp. 1S1830: { IF(AV) = 1.0A, VF = 1.2V } Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
APPENDIX – (B) : High Speed Switching of the LED Outputs We recommend inputting the PWM pulse to PMOS of the column at OUT-ENABLE terminal. Because, the PMOS is possible High-speed operating. When C1 is connected, rise time of the output wave form can be also be controlled. TB62727FN LED Supply PWM Pulse Outout Enable Signal ** The input of the data and other control signals are omitted. LED-ON LED-OFF ON OFF LED -ON LED-ON When C1 is small. When C1 is large. VSS2 OUT- ENABLE PWM Pulse OUT0 OUT15 1/16 column Output enable signal Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
Unit : mm Web: www.marktechopto.com | Email: info@marktechopto.com Company Headquarters Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 California Sales Office: Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314
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