DM631

DM631 SITI | Alldatasheet

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新竹市科學園區展業一路 9 號 7 樓之 1 SILICON TOUCH TECHNOLOGY INC . 9-7F-1, Prosperity Road I, Science Based Industrial Park, Hsin-Chu, Taiwan 300, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 DM631 Version : A.003 Issue Date : 2008/05/12 File Name : SP-DM631-A.003.doc Total Pages : 24 16-CHANNEL CONSTANT CURRENT LED DRIVER WITH PROGRAMMABLE PWM OUTPUTS

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 1 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 DM631 16-CHANNEL CONSTANT CURRENT LED DRIVER WITH PROGRAMMABLE PWM OUTPUTS General Description DM631 is a 16-channel constant current sink LED driver. Each channel ha s adjustable 12-bits (4096 steps) grayscale PWM control current outputs. It incorporates shift regi sters, data latches, constant current circuitry with curre nt value set by an external resistor, selectable oscillator source for PWM function, and built-in LED open detection circ uit to detect error status. It is specifically designed for LED display or lighting applications.

Features

z Constant-current outputs: 5mA to 90mA adjustable by one external resistor z 12-bit PWM control current outputs for each channel z Maximum output voltage: 17V z Maximum clock frequency: 25MHz z Selectable internal/external PWM reference clock z PWM free-running capability (refresh rate (~4.4KHz) with internal oscillator (~ 18 MHz)) z Build-in real-time LED open detection z Package and pin assignment (except QFN32) compatible to pure LED drivers series (ST2221C, DM134/5/6, DM13C) z Power supply voltage: 3.3V to 5.5V

Applications

z Indoor/Outdoor LED Video Display z LED Variable Message Signs (VMS) System z LED Decorative Lighting Package Types z SOP24, SOP24B, SSOP24, TSSOP24E (with exposed pad), QFN32 (with exposed pad)

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 2 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Block Diagram DAI DCK LAT DAO SOMODE /GCK REXT OUT 0 OUT 15 12-bit Counter Internal Oscillator VCC GND 12-bit Shift Register (1) 12-bit Shift Register (15) 12-bit Latch Register (0) 12-bit Latch Register (1) 12-bit Latch Register (15) 12-bit Shift Register (0) 12-bit PWM Generator (0) 12-bit PWM Generator (1) 12-bit PWM Generator (15) OUT 1 LED Open Detector (0) LED Open Detector (1) LED Open Detector (15) Constant Current Driver (0) Constant Current Driver (1) Constant Current Driver (15)

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 3 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Pin Connection OUT0 OUT1 OUT2 OUT3 VCC REXT DAO SOMODE/GCK GND DCK LAT OUT 15 OUT 14 OUT 13 OUT 12 DAI SOP24 SSOP24 TSSOP24E ( top view ) OUT4 OUT5 OUT6 OUT7 OUT 11 OUT 10 OUT 9 OUT 8 SOP24B QFN32 ( bottom view ) 910111213141516 2425 26 27 28 29 30 31 OUT0 OUT1 OUT2 OUT3 GND DCK LAT DAI GND OUT5 OUT6 OUT7 VCC REXT DAO /G C K OUT15 OUT14 OUT13 OUT12 GND OUT10 OUT9 OUT8 GND GND GND GND GND OUT11 VCC OUT4 SOMODE Pin Description PIN No. PIN NAME FUNCTION SOP24/SOP24B/SSOP24 /TSSOP24E: 1 TSSOP24E, QFN32: exposed pad GND Ground terminal. SOP24/SOP24B/SSOP24 /TSSOP24E: 2 QFN32: 9 DAI Serial data input terminal. SOP24/SOP24B/SSOP24 /TSSOP24E: 3 QFN32: 10 DCK Synchronous clock input terminal for serial data transfer. Data is sampled at the rising edge of DCK. SOP24/SOP24B/SSOP24 /TSSOP24E: 4 QFN32: 11 LAT Input terminal of data strobe: (level trigger) ‘H’ means latch register keep data ‘L’ means latch register gets data SOP24/SOP24B/SSOP24/TSSOP24E: 5~20 QFN32: 12~19, 22~29 OUT0~15 Sink constant-current outputs (open-drain). SOP24/SOP24B/SSOP24 /TSSOP24E: 21 QFN32: 30 SOMODE /GCK Serial Out Mode Selection(SOMODE) : ‘H’: DAO is shifted out and synchronized to falling edge of DCK, ‘L’ : DAO is shifted out and synchronized to rising edge of DCK. Gray Scale Clock(GCK) : Input terminal for PWM operation. SOP24/SOP24B/SSOP24 /TSSOP24E: 22 QFN32: 31 DAO Serial data output terminal. SOP24/SOP24B/SSOP24 /TSSOP24E: 23 QFN32: 32 REXT External resistors connected between REXT and GND for output current value setting. SOP24/SOP24B/SSOP24 /TSSOP24E: 24 QFN32: 3, 4 VCC Supply voltage terminal.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 4 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Equivalent Circuit of Inputs and Outputs 1. DCK, DAI, LAT , SOMODE/GCK terminals 2. DAO terminals PCB Layout Consideration To connect an external resistor to REXT pin and ground can determine the maximum output current. If there is any disturbance occurred to REXT pin, the constant current output may be unstable or noisy. Since REXT (pin23), DAO (pin22) , and SOMODE/GCK (pin21) are next to each other, the most possible interference is caused by DAO or SOMODE/G CK signal. Accordingly, it is recommended that adding some shielding area with in the above pins in PCB layout, or laying the signal line of above pins on different PCB layer will prevent the noise problems effectively.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 5 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Maximum Ratings (Ta=25°C, Tj(max) = 150°C) CHARACTERISTIC SYMBOL RATING UNIT Supply Voltage VCC -0.3 ~ 7.0 V Input Voltage VIN -0.3 ~ VCC+0.3 V Output Current IOUT 100 mA Output Voltage VOUT -0.3 ~ 17 V Input Clock Frequency FDCK 25 MHz GND Terminal Current IGND 1600 mA 4.46 ( QFN32 ) 4.17 ( TSSOP24E ) 2.45 ( SOP24 ) 2.19 (SOP24B ) Power Dissipation ( 4 layer PCB, Ta=25℃) PD 1.79 ( SSOP24 ) W 28.0 ( QFN32 ) 30.0 ( TSSOP24E) 51.0 (SOP24 ) 66.0 (SOP24B) Thermal Resistance ( 4 layer PCB, Ta=25℃) Rth(j-a) 70.0 (SSOP24 ) °C/W Operating Temperature Top -40 ~ 85 °C Storage Temperature Tstg -55 ~ 150 °C Recommended Operating Condition CHARACTERISTIC SYMBOL CONDITION MIN. TYP . MAX. UNIT Supply Voltage VCC ⎯ 3.3 5.0 5.5 V Output Voltage VOUT Driver On *1 1.0 ⎯ 0.5VCC Output Voltage VOUT Driver Off *2 ⎯ ⎯ 17 V IO OUTn 5 ⎯ 90 IOH VOH = VCC – 0.4 V - 0.8 ⎯ -2 Output Current IOL VOL = 0.2 V + 0.8 ⎯ + 2 mA Input Clock Frequency FDCK Single Chip Operation ⎯ ⎯ 25 Input PWM Frequency FGCK VCC = 3.3 V ~ 5.5V ⎯ ⎯ 25 MHz LAT Pulse Width tw LAT 15 ⎯ ⎯ DCK Pulse Width tw DCK 15 ⎯ ⎯ Set-up Time for DAI tsetup(D) 10 ⎯ ⎯ Hold Time for DAI thold(D) 10 ⎯ ⎯ Set-up Time for LAT tsetup(L) 10 ⎯ ⎯ Hold Time for LAT thold(L) 10 ⎯ ⎯ ns Internal Oscillator Frequency FOSC VCC = 5.0V 14.4 18 21.6 MHz *1 Notice that the power dissipation is limited to its package and ambient temperature. *2 The driver output voltage including any overshoot stress has to be compliant with the maximum voltage (17V).

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 6 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Electrical Characteristics (VCC = 5.0 V, Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP . MAX. UNIT Input Voltage “H” Level VIH CMOS logic level 0.8*VCC ⎯ VCC Input Voltage “L” Level VIL CMOS logic level GND ⎯ 0.2*VCC V Output Leakage Current IOL VOH = 17 V ⎯ ⎯ ±1.0 uA VOL IOL = 1.25 mA ⎯ ⎯ 0.2 Output Voltage (S-OUT) VOH IOH= 1.2 mA VCC-0.4 ⎯ ⎯ V Output Current Skew (Channel-to-Channel)*1 IOL1 ⎯ ⎯ ±3 % Output Current Skew (Chip-to-Chip)*2 IOL2 VOUT = 1.0 V Rrext = 2.2 KΩ 25.79 ⎯ 29.08 mA Output Voltage Regulation % / VOUT Rrext = 2.2 KΩ VOUT = 1 V ~ 3 V ⎯ ±0.1 ±0.5 Supply Voltage Regulation % / VCC Rrext = 2.2 K Ω ⎯ ±1 ±4 % / V LED Open Detection Threshold V(od) all outputs turn on ⎯ 0.3 ⎯ V IDD(off) power on all pins are open unless VCC and GND (fee-running mode) ⎯ 5.39 6.5 IDD(off) power on all pins are open unless VCC and GND (external GCK mode) ⎯ 4.57 ⎯ IDD(on) input signal is static Rrext = 12.4 KΩ all outputs turn off ⎯ 5.91 ⎯ IDD(on) input signal is static Rrext = 2.2 KΩ all outputs turn off ⎯ 8.10 ⎯ Supply Current*3 IDD(on) input signal is static Rrext = 570 Ω all outputs turn off ⎯ 17.11 ⎯ mA *1 Channel-to-channel skew is defined as the ratio between (any Iout – average Iout) and average Iout, where average Iout = (Imax + Imin) / 2. *2 Chip-to-Chip skew is defined as the range into which any output current of any IC falls. *3 IO excluded.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 7 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Electrical Characteristics (VCC = 3.3 V, Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP . MAX. UNIT Input Voltage “H” Level VIH CMOS logic level 0.8*VCC ⎯ VCC Input Voltage “L” Level VIL CMOS logic level GND ⎯ 0.2*CC V Output Leakage Current IOL VOH = 17 V ⎯ ⎯ ±1.0 uA VOL IOL = 1.25 mA ⎯ ⎯ 0.2 Output Voltage (S-OUT) VOH IOH= 1.2mA VCC-0.4 ⎯ ⎯ V Output Current Skew (Channel-to-Channel)*1 IOL1 ⎯ ⎯ ±3 % Output Current Skew (Chip-to-Chip)*2 IOL2 VOUT = 1.0 V Rrext = 2.2 KΩ 25.79 ⎯ 29.08 mA Output Voltage Regulation % / VOUT Rrext = 2.2 KΩ VOUT = 1 V ~ 3 V ⎯ ±0.1 ±0.5 Supply Voltage Regulation % / VCC Rrext = 2.2 K Ω ⎯ ±1 ±4 % / V LED Open Detection Threshold V(od) all outputs turn on ⎯ 0.3 ⎯ V IDD(off) power on all pins are open unless VCC and GND (fee-running mode) ⎯ 3.8 ⎯ IDD(off) power on all pins are open unless VCC and GND (external GCK mode) ⎯ 3.39 ⎯ IDD(on) input signal is static Rrext = 12.4 KΩ all outputs turn off ⎯ 4.33 ⎯ IDD(on) input signal is static Rrext = 2.2 KΩ all outputs turn off ⎯ 6.54 ⎯ Supply Current*3 IDD(on) input signal is static Rrext = 570 Ω all outputs turn off ⎯ 15.10 ⎯ mA *1 Channel-to-channel skew is defined as the ratio between (any Iout – average Iout) and average Iout, where average Iout = (Imax + Imin) / 2. *2 Chip-to-Chip skew is defined as the range into which any output current of any IC falls. *3 IO excluded.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 8 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Switching Characteristics (VCC = 5.0V, Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP . MAX. UNIT GCK-to-OUT ⎯ 45.74 ⎯ DCK(rising edg)-to-DAO ⎯ 37.16 ⎯ Propagation Delay (‘L’ to ‘H’) DCK(falling edg)-to-DAO tpLH ⎯ 14.4 ⎯ GCK-to-OUT ⎯ 23.76 ⎯ DCK(rising edg)-to-DAO ⎯ 27.82 ⎯ Propagation Delay (‘H’ to ‘L’) DCK(falling edg)-to-DAO tpHL ⎯ 9.7 ⎯ Output Current Rise Time tor ⎯ 18 ⎯ Output Current Fall Time tof ⎯ 6.96 ⎯ Output to output Delay Time Unit td ⎯ 33 ⎯ ns Output Current (Propagation Delay after LAT trigger) top*1 VIH = VCC VIL = GND Rrext = 2.3 KΩ VL = 5.0 V CL = 13 pF ⎯ ⎯ 288 us Switching Characteristics (VCC = 3.3V, Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP . MAX. UNIT GCK-to-OUT ⎯ 48.8 ⎯ DCK(rising edg)-to-DAO ⎯ 21.2 ⎯ Propagation Delay (‘L’ to ‘H’) DCK(falling edg)-to-DAO tpLH ⎯ 18.3 ⎯ GCK-to-OUT ⎯ 29.6 ⎯ DCK(rising edg)-to-DAO ⎯ 17.6 ⎯ Propagation Delay (‘H’ to ‘L’) DCK(falling edg)-to-DAO tpHL ⎯ 14.4 ⎯ Output Current Rise Time tor ⎯ 20 ⎯ Output Current Fall Time tof ⎯ 8.25 ⎯ Output to output Delay Time Unit td ⎯ 34 ⎯ ns Output Current (Propagation Delay after LAT trigger) top*1 VIH = VCC VIL = GND Rrext = 2.3 KΩ VL = 3.3 V CL = 13 pF ⎯ ⎯ 288 us OUTn DAO REXT VCC CL VL Switching Characteristics Test Circuit A Rrext DAI LAT DCK SOMODE /GCK CLCLCLCL GND *1 Reload the new PWM data at the end of the last PWM frame.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 9 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Constant-Current Output Constant-current value(Iout*1) of each output channel is set by an external resistor connected between the REXT pin and GND. The current scale ra nging can be adjusted from 5mA to 90mA by varying the resistor value. The reference voltage of REXT terminal (Vrext) is approximately 1.23V . The output current value is calculated by the following equation: Iout(mA) 5 10 20 30 40 50 60 70 80 90 Output Current as a Functiono Rext val ue 100 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Rext(K Ω ) Iout(mA) Output Current as a Function of Output Voltage 100 Vout (V) Iout (mA) In order to obtain a good performance of consta nt-current output, a suitable output voltage is necessary. Users can get related information about the minimum output voltage above. *1 Iout is typical current value setting under 100% PWM duty cycle and 95 DGBC Value. Iout (mA) ~ Vrext (V) Rrext (KΩ) × M

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 10 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Serial Data Interface The serial-in data (DAI) will be clocked into 16 × 12 bit shift registers synchronized on the rising edge of the cloc k (DCK). The data will be transferred into the 16 × 12 bit latch registers when the strobe signal ( LAT ) is kept at high level (level trigge r); otherwise, the data will be held. The latch pulse should be sent after the falling edge of the last clock within a frame data. The trigger timing of the serial-out data (DAO) will be shifte d out on synchronization to the rising edge of the clock if serial out selection (SOMODE) is kept at low level. And if serial out selection (SOMODE) is kept at high level, the serial -out data (DAO) will be shifted out on synchronization to the falling edge of the clock (DCK). Input Data Format LED Open Detection DM631 provides a real time monitor of LED open detection function without extra components or circuit design. It will be id entified as a LED open failure when the output is turned on but the output voltage is below 0.3V . The test result of each channel will write to its correspondent shift register which is in LSB position (D 15[0], D14[0], …., D 0[0]) while strobe signal is active. User can refer to timing diagram on page13. Detecting report could be retrieved from serial-out (DAO) data. If the system reads ‘1’ back, that indicates LED is in normal status . But if ‘0’ was retrieved then LED open failure has occurred. In order to make sure LED open detection function is in well operating condition, it is recomme nded that all the luminance data are wrote to ‘1’ then almost turning on the outputs during detection process.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 11 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Serial-out Data Format LSB OUT 15 MSB shift out first OUT 14 OUT 0 LSBMSB LSBMSB *E[15], E[14],… ,E[0] are Error Message of LED Open Detection. ｀1＇is normal, and ｀0＇is abnormal. Selection of Internal/External PWM Frequency The default operation mode is the free-running PWM signal generated by internal oscillator after power-on. Users could switch internal to external PWM frequency source by following timing sequence. There are two alternativ e options could be selected. The option 1 shows three rising edge of latch pulses ( LAT ) when the clock (DCK) kept at high level then two rising edge of clock (DCK) pulses when the latch pulse ( LAT ) kept at high level. Then the SOMODE/GCK pin could input external frequency to operate PWM function. The option 2 shows four rising edge of latch pulses( LAT ) when clock(DCK) kept at high level then sending three rising edge of clock (DCK) signal, while latch( LAT ) signal kept high level at the sa me time. Meanwhile the GCK external mode can be set back to the free-running mode. Notice that when internal RESET at low level, all the shift registers in DM631 will be cleared (Kept at Low level) and all output current will be off immediately. DCK LAT Normal Operation t DCK LAT RESET (internal) Option 2 : Timing Combination to set up free-running mode t DCK LAT Option 1 : Timing Combination to set up external GCK mode RESET (internal) t 12 3 12 3 12 3

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 12 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Timing Diagram 1. DCK-DAI, DAO (SOMODE = ”L” at free-running mode, or external GCK mode) DCK DAI DAO 50% 50% 50% 50% 50% 50% twDCK twDCK tsetup(D) thold(D) tpLH tpHL 50% 50% 2. DCK, DAO (SOMODE = “H ” at free-running mode) DAO 50% 50% 50% 50% twDCK twDCK tpLH tpHL 50% 50% DCK 3. DCK-LAT DCK LAT 50% 50% 50% tsetup(L) twLAT 50% thold(L) 4. Output to Output Delay Time Un it (n=2,3,4,5,6,7,10,11,12,13,14,15) OUTn OUTn-2 50% 50% t d 5. GCK-OUT 0 GCK OUT0 50% 50% 50% tpLH tpHL 50%

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 13 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 5. Timing Diagram (free-running mode switch to external GCK mode) E[0]*2E[0]*2 DA[1] 191 192 DAI DAO*1 DCK LA T*3 12 191 192 12 192 SOMODE*4 /GCK*5 OUTn (current ) DA[0] DC[191] DC[190] DC[0] DA[191] DB[191] Fr ame DataAFr ame DataZ Fr ame DataC*8 on of f high lo w high lo w DB[191] DB[190] DB [1] D B [0] DA[190] DC[191] 190 DA[2] <1fr a m e*6 DZ[1] DA[1] 190 DB[2] DD[191] DD[190] DC[190] DC [189] 4096 x GCK*7 191 E[0]*2 *1 DAO is shifted out on synchronization to rising / falling edge of DCK according to SOMODE is｀L＇/｀H＇. *2 E[0] is the error message of LED open detection. *3 LAT is level trigger, not edge trigger. *4 SOMODE function work in free-running mode. *5 While switching to external GCK mode, all registers in DM631 will be reset simultaneously. *6 Starting the new PWM frame after the last PWM period finish completely. *7 While switching to external GCK mode, outputs will be active after 4096 GCK pulse. *8 When using external frequency for PWM operation, the PWM refresh rate (frame rate) can be calculated by following equation: Input GCK Frequency (Hz) R e f r e s h R a t e ( H z ) = T o t a l P W M r e s o l u t i o n ( 2 12 ) For example, if the refresh rate in display system is higher than 60Hz, the input GCK frequency must be higher than 246kHz.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 14 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Timing Diagram (external GCK mode switch to free-running mode) 192 DD[0] Fr ame DataD on of f high lo w high lo w DD[191] DG[191] DG[190] DF[190] DF [189] DAI DAO DCK LAT SOMODE / OUTn (current ) 192 DE[0] DE [1 ] 1 2 192 DF[191] D F[190] D[ 0 ]F One free-running PWM cycle Fr ame DataF DE[191] DE[190] DD[190] DD [189] DF [19 ]191 GCK Fr ame DataC DE [1 ]90 D E [1 ]89

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 15 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Global Brightness Control DM631 has no built-in global brightness control feat ure. In order to obta in a lower resolution of global brightness contro l effect, two methods could be utili zed. Here show different ways to adjust the Rrext value or voltage drop across the external resistor. Please see the reference circuit below: Output to Output Delay DM631 has build-in output to output delay with a special arrangement. This arrangement help chip avoid noise cause by large current during ch annels switching. The arrangement details are shown as following table. Channel 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Delay units 0 4 1 5 2 6 3 7 3 7 2 6 1 5 0 4

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 16 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Power Dissipation The power dissipation of a semiconductor chip is limited to its package and ambient temperature, in which the device requires the maximum output current calculated for given operating conditions. The maximum allowable pow er consumption can be calculated by the following equation: Pd(max)(Watt) = Tj(junction temperature)(max)(°C)– Ta(ambient temperature)(°C) Rth(junction-to-air thermal resistance)(°C/Watt) The relationship between power dissipation and ope rating temperature can be refer to the figure below: 0.5 1.5 2.5 3.5 4.5 0 2 04 06 08 0 1 0 0 1 2 0 1 4 0 1 6 0 Ambient Temperature Ta ( ℃ ) Power Dissipation Pd(W) The power consumption of IC can be determined by the following equation and should be less than the maximum allowable power dissipation: Tj(max)=150°C Rth(QFN32)=28.0°C/Watt Rth(TSSOP24)=30.0°C/Watt Rth(SOP24)=51.0°C/Watt Rth(SOP24B)=57.0°C/Watt Rth(SSOP24)=70.0°C/Watt SSOP24 QFN32 SOP24 TSSOP24 SOP24B

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 17 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Typical Application DM631 DM631 DM631 DM631 DM631 DM631 DM631

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 18 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 D 24 13 121 E b e 0.004 A C DETAIL A A1 A L SEATING PLANE GAUGE PLANE Package Outline Dimension DM631-SSOP DIMENSIONS IN INCH DIMENSIONS IN MM SYMBOLS MIN. MAX. MIN. MAX. A 0.053 0.069 1.346 1.753 A1 0.004 0.010 0.102 0.254 A2 - 0.059 - 1.499 b 0.008 0.012 0.203 0.305 C 0.007 0.010 0.178 0.254 D 0.337 0.344 8.560 8.738 E 0.228 0.244 5.791 6.198 E1 0.150 0.157 3.810 3.988 e 0.025 BSC. 0.635 BSC L 0.016 0.050 0.406 1.270 L1 0.041 BSC 1.041 BSC Θ 0° 8° 0° 8°

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 19 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Package Outline Dimension DM631-SOPB DIMENSIONS IN INCH DIMENSIONS IN MM SYMBOLS MIN. MAX. MIN. MAX. A - 0.075 - 1.900 A1 0.002 0.008 0.050 0.200 A2 0.051 0.067 1.300 1.700 b 0.012 0.020 0.300 0.500 c 0.004 0.010 0.100 0.250 D 0.504 0.520 12.800 13.200 E 0.303 0.327 7.700 8.300 e 0.0394 BSC 1.000 BSC E1 0.228 0.244 5.800 6.200 L 0.010 0.026 0.250 0.650 θ 0° 10° 0° 10°

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 20 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 b E H e D A 0.004MAX. L 0.01 inch GAUGE PLANE SEATING PLANE Package Outline Dimension DM631-SOP DIMENSIONS IN INCH DIMENSIONS IN MM SYMBOLS MIN. MAX. MIN. MAX. A - 0.104 - 2.642 A1 0.004 - 0.102 - b 0.016 BSC 0.406 BSC D 0.612 0.624 15.545 15.850 E 0.292 0.299 7.417 7.595 e 0.050 BSC 1.270 BSC H 0.405 0.419 10.287 10.643 L 0.021 0.041 0.533 1.041 Θ 0° 8° 0° 8°

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 21 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 S L 0.25mm GAUGE PLANE SEATING PLANE 24 13 121 be E D 0.05 A Package Outline Dimension DM631-TSSOP (exposed pad) DIMENSIONS IN INCH DIMENSIONS IN MM SYMBOLS MIN. MAX. MIN. MAX. A - 0.047 - 1.20 A1 0.000 0.006 0.00 0.15 A2 0.031 0.041 0.80 1.05 b 0.007 0.012 0.19 0.30 D 0.303 0.311 7.70 7.90 E1 0.169 0.177 4.30 4.50 E 0.252 BSC 6.400 BSC e 0.026 BSC 0.650 BSC L1 0.039 REF 1.000 REF. L 0.018 0.030 0.45 0.75 S 0.008 - 0.20 - Θ 0° 8° 0° 8° E2 0.0898 0.1122 2.280 2.850 D1 0.146 1.819 3.700 4.620

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 22 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 Package Outline Dimension DM631-QFN (exposed pad) Note: 1.DIMENSIONING AND TOLERANCING CONFORM TO ASME Y145.5M-1994. 2. REFER TO JEDEC ST D. MO-220 WHHD-2 ISSUE A DIMENSIONS IN INCH DIMENSIONS IN MM SYMBOLS MIN. MAX. MIN. MAX. A 0.028 0.031 0.70 0.80 A1 0 0.002 0 0.05 A3 0.008 REF. 0.203 REF. b 0.007 0.012 0.180 0.300 D 0.193 0.201 4.900 5.100 E 0.193 0.201 4.900 5.100 e 0.0197 BSC 0.500 BSC L 0.012 0.020 0.30 0.50 K 0.0079 - 0.2 - D2 0.049 0.128 1.25 3.25 E2 0.049 0.128 1.25 3.25 61cm D E b e A L K 916 25 32 0.08 CO.35x45°

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路9號7樓 之1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 16-channel 12-bit PWM Constant Current LED Driver Version:A.003 Page 23 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM631 The products listed herein are designed for ordinary electronic a pplications, such as electrical appliances, audio-visual equipment, communications devices and so on. Hence, it is advisable that the devices should not be used in medical instruments, surgical implants, aerospace machinery, nuclear power control systems, disaster/crime-prevention equipment and the like. Misusi ng those products may directly or indirectly endanger human life, or cause injury and property loss. Silicon Touch Technology, Inc. will not take any responsibilities regarding the misusage of the products mentioned above. Anyone who purchases any products described herein with the above-mentioned intention or with such misused applications should accept full responsi bility and indemnify. Silicon Touch Technology, Inc. and its distributors and all their officers and employees shall defend jointl y and severally against any and all claims and litigation and all damages, cost and expe nses associated with such intention and manipulation.