DM164

DM164 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 DM164 Version : A.002 Issue Date : 2008/08/14 File Name : SP-DM164-A.002.doc Total Pages : 30 8x3-CHANNEL CONSTANT CURRENT LED DRIVER

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 1 DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS General Description The DM164 is a LED current si nk driver incorporating i ndependent shift registers and data latches for grayscale PWM data (GD mode *1) and current adjustment data (D&G mode*1), 8x3-channels constant current circuitr y with current value set by 3 external resistors, 65,536 grayscale PWM function uni t, 128 levels current adjustment for each channel and 256 levels global brightness contro l (White balance). Each channel provides maximum current of 90mA. The DM164 also supports the LED open detection capability, thermal alarm and shutdown function. There are two methods to communicate error signals to the system. One is through serial output data to indicate which channel has failure. The other is by means of dedicated Alarm pin.

Features

◆ Constant current outputs with current value set by 3 external resistors. ◆ Max PWM clock frequency Cascade: 36MHz@VDD=3.3V(Refresh rate ≒550Hz), 40MHz@VDD=5V (610Hz) ◆ Max data clock frequency Cascade: 30MHz@VDD=3.3V, 35MHz@VDD=5V ◆ Maximum output current: 90mA ◆ Maximum output voltage: 17V ◆ 16-bit grayscale for each LED ◆ 8-bit current adjustment for global brightness control (White Balance) ◆ 7-bit current adjustment for each LED (Dot Correction) ◆ Supply Voltage: 3V to 5.5V ◆ LED Open Detection ◆ Thermal Alarm and Shutdown Alarm (junction temperature >130 oC) Shutdown (junction temperature > 170 oC) ◆ One-Shot Option ◆ Built-in Buffer for Data, PWM Clock, Latch signal and Data Clock ◆ Average Separate IOUT PWM Waveform Option Package z LQFP48 (7mmX7mm), QFN48 (7mmX7mm) *1: See Page 10

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 2 Block Diagram PWM Data Shift Register DCK Shift Register DCKO DIN DOUT Dot Correction Latch Data Latch ‧‧‧ Dot Correction Latch Data Latch Dot Correction Latch Data Latch Global R Latch Global G Latch Global B Latch 0 15 16 31 365 38324 30 31 37 185 19107 8 1 5 1 6 2 3 3830 384 MSEL LTH DCKPH LTHO 16-bit PWM Generator 16-bit PWM Generator 16-bit PWM Generator 16-bit counter GCK ‧‧‧ Global B 8-bit DA Global G 8-bit DA Global R 8-bit DA Dot Correction 7-bit DA Dot Correction 7-bit DA Dot Correction 7-bit DA Constant Current Driver Delay00 Delay01 Constant Current Driver Delay23 Constant Current Driver‧‧‧ ‧‧‧ Constant Current Reference REXT_R REXT_G REXT_B Open Detection Open Detection Open Detection Thermal Alarm / Shutdown T130 ALARM IOUT0 IOUT1 IOUT23 ‧‧‧ ‧‧‧ GCKOGCK DOUTPH ONEST EN_B 192 01 9 1 EN_B EN_B DISSIPATION RATINGS PACKAGE POWER DISSIPATION (Tj_max=150 oC) THERMAL RESISTANCE (Rja, Ta=25oC) QFN48 4.00 W 31.22 oC/W LQFP48 2.16 W 57.86 o C/W

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 3 Pin Description LQFP48 (Top View) DIN DCK LTH VDD2 GCK VSS4 VSS3 GCKO MSEL LTHO DCKO DOUT IOUT0 IOUT1 IOUT2 IOUT3 IOUT4 IOUT5 IOUT6 IOUT7 IOUT8 IOUT9 IOUT10 IOUT11 EN_B DCKPH DOUTPH VDD1 IWAVE VSS1 VSS2 ONEST REXT_R REXT_G REXT_B ALARM IOUT23 IOUT22 IOUT21 IOUT20 IOUT19 IOUT18 IOUT17 IOUT16 IOUT15 IOUT14 IOUT13 IOUT12 QFN48 (Top View) DIN DCK LTH VDD2 GCK VSS4 VSS3 GCKO MSEL LTHO DCKO DOUT IOUT0 IOUT1 IOUT2 IOUT3 IOUT4 IOUT5 IOUT6 IOUT7 IOUT8 IOUT9 IOUT10 IOUT11 EN_B DCKPH DOUTPH VDD1 IWAVE VSS1 VSS2 ONEST REXT_R REXT_G REXT_B ALARM IOUT23 IOUT22 IOUT21 IOUT20 IOUT19 IOUT18 IOUT17 IOUT16 IOUT15 IOUT14 IOUT13 IOUT12

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 4 PIN NAME FUNCTION QFN48 / LQFP48 pin number VDD1,VDD2 Power supply terminal. 16,45 VSS1~4 Ground terminal. 18,19,42,43 REXT_R R EXT_G REXT_B External resistor connected between REXT and GND for driver current setting. REXT_R controls outputs: REXT_G controls outputs: IOUT1, 4, 7, 10, 13, 16, 19, 22. R EXT_B controls outputs: IOUT2, 5, 8, 11, 14, 17, 20, 23. IOUT0~11 LED driver outputs. 12,11,10,9,8,7, 6,5,4,3,2,1 IOUT12~23 LED driver outputs. 36,35,34,33,32,31 30,29,28,27,26,25 DIN Serial input for grayscale PWM data and current adjustment data. 48 DOUT Serial output for grayscale PWM data and current adjustment data. 37 DCK Synchronous clock input for serial data transfer. The input data of DIN can be transferred at either the rising edges of DCK or the falling edges of DCK depending on the signal DCKPH. DCKO Synchronous clock output for serial data transfer. DCKO=DCK . 38 DCKPH When DCKPH = L, input data is shifted in by rising edge of DCK, When DCKPH = H, input data is shifted in by falling edge of DCK DOUTPH When DOUTPH = H, DOUT is shifted out with half DCK cycle delay When DOUTPH = L, DOUT is shifted out without delay LTH Data latch input pin. When DCKPH=L & LTH=H or DCKPH=H & LTH=L, internal latches become transparent and PWM counter value will be set to FFFF(h). When DCKPH=L & LTH=L or DCKPH=H & LTH=H, internal latches hold data. LTHO Data latch output pin. LTHO=LTH 39 GCK Clock input for PWM operation. When DCKPH=L (DCKPH=H), the internal PWM counter will count up with rising (falling) edge of GCK.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 5 GCKO Clock output. GCKO=GCK 41 EN_B Blank all outputs. When EN_B = H, all outputs are forced OFF. When EN_B = L, all outputs are controlled by grayscale PWM control. MSEL When MSEL = H, the device is operated in Dot Correction Data & Global Brightness Control Data Input Mode (D&G mode). When MSEL = L, the device is operated in Grayscale PWM Data Input Mode (GD mode). ALARM Output open drain terminal for an alarm function. when EN_B = L, It will go low as LED open when EN_B = H, It will go low as chip overheated. IWAVE When IWAVE = H, traditional Iout waveform. When IWAVE = L, average separate Iout waveform. 17 ONEST When ONEST = H, one-shot function is enabled. When ONEST = L, one-shot function is disabled. 20 Maximum Ratings (Ta=25°C, Tj(max) = 150°C) CHARACTERISTIC SYMBOL RATING UNIT Supply Voltage V DD -0.3 ~ 7.0 V Input Voltage V IN -0.3 ~ V DD+0.3 V Output Current I OUT 90 mA Output Voltage V OUT -0.3 ~ 17 V DCK Frequency F DCK Cascade Vdd=5V 35 Vdd=3.3V 30 MHz GCK Frequency F GCK Cascade Vdd=5V 40 Vdd=3.3V 36 MHz GND Terminal Current I GND 2200 mA Power Dissipation P D 4.00 ( QFN48); 2.16 (LQFP48) (Ta=25 °C) W Thermal Resistance R th(j-a) 31.22 ( QFN48 ); 57.86 (LQFP48) ℃/W Operating Temperature T op -40 ~ 85 ℃ Storage Temperature T stg -55 ~ 150 ℃ Recommended Operating Condition DC Characteristics (Ta = 25°C) CHARACTERISTIC SYMBOL CONDITI ON MIN. TYP . MAX. UNIT Supply Voltage VDD ⎯ 3 ⎯ 5.5 V Output Voltage VOUT ⎯ ⎯ ⎯ 17 V IO OUTn ⎯ ⎯ 90 IOH SERIAL-OUT ⎯ ⎯ ⎯ Output Current IOL SERIAL-OUT ⎯ ⎯ ⎯ mA VIH ⎯ 0.7 VDD ⎯ V DD+0.2Input Voltage VIL ⎯ -0.2 ⎯ 0.3 V DD V

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 6 AC Characteristics (VDD = 5.0 V, Ta = 25°C, REXT = 3.9kΩ) CHARACTERISTIC SYMBOL CONDITI ON MIN. TYP. MAX. UNIT DCK Frequency F DCK Cascade operation ⎯ ⎯ 35 MHz DCK pulse duration Twhdk / Twldk High or low level ⎯ 13 ⎯ ns DCK rise/fall time Trdk/ Tfdk Single, CLoad=13pF ⎯ 5 ⎯ ns GCK Frequency F GCK Cascade operation ⎯ ⎯ 40 MHz GCK pulse duration Twhgk / Twlgk High or low level ⎯ 12 ⎯ ns GCK rise/fall time Trgk/ Tfgk Single, CLoad=13pF ⎯ 5 ⎯ ns Set-up Time for DIN Tsu0 Before DCK rising edge ⎯ 10 ⎯ ns Hold Time for DIN Th0 After DCK rising edge ⎯ 10 ⎯ ns Set-up Time for DCK Tsu1 Before LTH falling edge ⎯ 30 ⎯ ns LTH Pulse Width TwLTH ⎯ ⎯ 15 ⎯ ns Set-up Time for LTH Tsu2 Before GCK rising edge ⎯ 10 ⎯ ns Set-up Time for MSEL Tsu3 Before DCK rising edge ⎯ 10 ⎯ ns Hold Time for MSEL Th3 After DCK rising edge ⎯ 30 ⎯ ns AC Characteristics (VDD = 3.3 V, Ta = 25°C, REXT = 3.9kΩ) CHARACTERISTIC SYMBOL CONDITI ON MIN. TYP. MAX. UNIT DCK Frequency F DCK Cascade operation ⎯ ⎯ 30 MHz DCK pulse duration Twhdk / Twldk High or low level ⎯ 15 ⎯ ns DCK rise/fall time Trdk/ Tfdk Single, CLoad=13pF ⎯ 4 ⎯ ns GCK Frequency F GCK Cascade operation ⎯ ⎯ 36 MHz GCK pulse duration Twhgk / Twlgk High or low level ⎯ 13 ⎯ ns GCK rise/fall time Trgk/ Tfgk Single, CLoad=13pF ⎯ 4 ⎯ ns Set-up Time for DIN Tsu0 Before DCK rising edge ⎯ 10 ⎯ ns Hold Time for DIN Th0 After DCK rising edge ⎯ 10 ⎯ ns Set-up Time for DCK Tsu1 Before LTH falling edge ⎯ 30 ⎯ ns LTH Pulse Width TwLTH ⎯ ⎯ 15 ⎯ ns Set-up Time for LTH Tsu2 Before GCK rising edge ⎯ 10 ⎯ ns Set-up Time for MSEL Tsu3 Before DCK rising edge ⎯ 10 ⎯ ns Hold Time for MSEL Th3 After DCK rising edge ⎯ 30 ⎯ ns See Page 9: Timing Diagram

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 7 Electrical Characteristics (VDD = 5.0 V, Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITI ON MIN. TYP . MAX. UNIT Input Voltage “H” Level V IH ⎯ 0.7 V DD ⎯ V DD Input Voltage “L” Level V IL ⎯ GND ⎯ 0.3 V DD V Output Leakage Current I leak V OUT = 17 V ⎯ ⎯ ±0.1 uA VOL I OL = 2 mA ⎯ ⎯ Output Voltage ( DOUT) VOH I OH = -2 mA ⎯ ⎯ V Output Current (Channel-Channel) IOL1 VOUT = 1.0V REXT = 3.9kΩ ⎯ ±1 ±3 % Output Current (Chip-Chip) IOL3 VOUT = 1.0V REXT = 3.9kΩ ⎯ ⎯ ±6 % Output Voltage Regulation % / Vout REXT = 3.9kΩ ⎯ 13 ⎯ VDD=5.0V, REXT = 3.9kΩ , R EXT = 1.4kΩ ⎯ 34 ⎯ ⎯ 12 ⎯ IDD, analog VDD=3.3V, REXT = 3.9kΩ , REXT = 1.4kΩ ⎯ 33 ⎯ VDD=5.0V ⎯ 2.4 ⎯ Supply Current1 IDD, digital Cload=2pF, DCK=GCK=10MHz VDD=3.3V ⎯ 1.8 ⎯ mA Switching Characteristics (VDD = 5.0V, Ta = 25°C) CHARACTERISTIC SYMBOL CONDITI ON MIN. TYP . MAX. UNIT DOUT Rise time tr ⎯ 5 10 ns DOUT Fall time tf VIH=VDD VIL=GND REXT=3.9kΩ CL=13pF ⎯ 5 10 ns IOUT Rise time tr ⎯ 8 30 ns IOUT Fall time tf VIH=VDD, VIL=GND REXT=3.9kΩ VLED=5.0V RL=100Ω, CL=33pF 10% to 80% ⎯ 8 30 ns DOUT Tplh0 After DCK rising edge ⎯ 28 ⎯ ns DOUT Tphl0 After DCK rising edge ⎯ 28 ⎯ ns DCKO Tplh1 After DCK falling edge ⎯ 14 ⎯ ns DCKO Tphl1 After DCK rising edge ⎯ 17 ⎯ ns LTHO Tplh2 After LTH falling edge ⎯ 14 ⎯ ns LTHO Tphl2 After LTH rising edge ⎯ 17 ⎯ ns GCKO Tplh3 After GCK falling edge ⎯ 16 ⎯ ns GCKO Tphl3 After GCK rising edge ⎯ 16 ⎯ ns IOUT0 (turn on) Tplh4 After GCK rising edge ⎯ 30 ⎯ ns IOUT0 (turn off) Tphl4 After GCK rising edge ⎯ 31 ⎯ ns IOUT0 (turn on) Tplh5 After EN_B falling edge ⎯ 27 ⎯ ns IOUT0 (turn off) Tphl5 After EN_B rising edge ⎯ 25 ⎯ ns

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 8 Switching Characteristics (VDD = 3.3V, Ta = 25°C) CHARACTERISTIC SYMBOL CONDITI ON MIN. TYP . MAX. UNIT DOUT Rise time tr ⎯ 4 10 ns DOUT Fall time tf VIH=VDD VIL=GND REXT=3.9kΩ CL=13pF ⎯ 4 10 ns IOUT Rise time tr ⎯ 12 30 ns IOUT Fall time tf VIH=VDD, VIL=GND REXT=3.9kΩ VLED=5.0V RL=100Ω, CL=33pF 10% to 80% ⎯ 12 30 ns DOUT Tplh0 After DCK rising edge ⎯ 35 ⎯ ns DOUT Tphl0 After DCK rising edge ⎯ 35 ⎯ ns DCKO Tplh1 After DCK falling edge ⎯ 21 ⎯ ns DCKO Tphl1 After DCK rising edge ⎯ 19 ⎯ ns LTHO Tplh2 After LTH falling edge ⎯ 20 ⎯ ns LTHO Tphl2 After LTH rising edge ⎯ 20 ⎯ ns GCKO Tplh3 After GCK falling edge ⎯ 23 ⎯ ns GCKO Tphl3 After GCK rising edge ⎯ 23 ⎯ ns IOUT0 (turn on) Tplh4 After GCK rising edge ⎯ 42 ⎯ ns IOUT0 (turn off) Tphl4 After GCK rising edge ⎯ 41 ⎯ ns IOUT0 (turn on) Tplh5 After EN_B falling edge ⎯ 39 ⎯ ns IOUT0 (turn off) Tphl5 After EN_B rising edge ⎯ 33 ⎯ ns

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 9 Timing Diagram Tsu0 Th0 Twhdk Th3 Tsu3 MODE DCK DIN LTH Tsu1 TwLTH Tplh0 Tphl0 DOUT Tphl1 Tplh1 DCKO Tphl2 Tplh2 LTHO Tphl3 Tplh3 GCKO GCK IOUT0 (current) EN_B Tphl4 Tplh4 Tphl5 Tplh5 Tsu2

192-bit or 384-bit wide, depending on the operating mode of the device. grayscale PWM data after D&G mode. Table 1. Two Operating Modes is clocked in with MSB first. Figure 1 shows the D&G mode data format. Figure 1. D&G Mode Data Format (D&G[191:0])

10 GCK Latencies

Figure 4. GD Mode Data Input Timing Chart

130 C 170 C

Figure 5. Thermal Alarm and Shutdown

1. IOUTn is on (IOUTn > 200ns and EN_B=”L”).
2. When the output voltage at IOUTn is less than 0.2 V

=> IOUTn is open). The other is by means of dedicated Alarm pin when EN_B=L. transferred out from DOUT pin. Figure 6 shows the status information format. Figure 6. Status Information Data Format (ER[383:0])

after the LTH signal latches the input data. Figure 7 shows the timing chart. Figure 7. Open Error Signals Timing Chart high but GCK stops going, then the IOUTs will not turn off normally.

1 GCK Latency

Figure 8. IOUT Delay Timing Chart

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 1 5 DIN GD[383]a DCK LTH GD[0]a 1 384 GCK Internal counter IOUT 0, 1, 2 0 1 2 3 4 5 6 7 8 65534 65535 01334 IOUT 3, 4, 5 IOUT 6, 7, 8 IOUT 9,10,11 IOUT12,13,14 IOUT15,16,17 IOUT18,19,20 IOUT21,22,23 65535 EN_B GD[383]b

1 GCK

1.5 GCK

2 GCK

2.5 GCK

3 GCK

3.5 GCK

4 GCK

4.5 GCK

GD[0]b Iout Delay & EN_B Delay Waveform

L, one-shot function is disabled. The output will repeat at every PWM cycle. Figure 9. One-Shot Operation

65536 GCK cycle 65536 GCK cycle

1 GCK cycle 1 GCK cycle

Figure 10. Grayscale PWM Operation Imax = the maximum output current. GB = the global brightness control value for different colors.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 1 9 Output Current vs. External Resistor Output Current Performance vs. Output Voltage

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 2 1 c) Less Than 16-bit PWM Grayscale Application c.1 IWAVE=”H” and less than 16-bit PWM application When the DM164 operates at n- bit PWM grayscale application and IWAVE is set to ”H” (where n is less than 16). User s must add k-bit dummy data into the 16-bit GD mode data of each channel (where k = 16-n). The 16-bit GD mode data format of each channel is showed below: Data [n-1] PWM MSB [1] Data [0] Data [n-2] PWM MSB-1 PWM LSB PWM LSB+1 n-bitk-bit 16-bit n-bit PWM Data k-bit Dummy Data The k-bit MSB of 16-bit GD mode data of each channel must be filled with all “0” ( k=16-n ). For example: When the DM164 operates at 14- bit PWM grayscale application and IWAVE=”H”, the 2-bit MSB of the 16-bit GD mode data must be filled with “0”. The 16-bit data format is showed below: Data [13] PWM MSB 00 ‧‧‧ Data [1] Data [0] Data [12] PWM MSB-1 PWM LSB PWM LSB+1 14-bit2-bit 16-bit 14-bit PWM Data2-bit Dummy Data Figure 14 shows the timing diagram when t he DM164 operates at n-bit PWM grayscale application. The frame cycle of n-bit PWM grayscale application can be controlled by GCK and LTH signals.

2 GCK cyclesn

Figure 14. Operating at n-bit PWM Grayscale Application Timing Diagram

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 2 3 c.3 IWAVE=”L” and Less than 11-bit PWM application When the DM164 operates at n- bit PWM grayscale application and IWAVE is set to ”L” (where n is less than 11). User s must add k-bit dummy data into the 16-bit GD mode data of each channel (where k = 16-n). The 16-bit GD mode data format of each channel is showed below: Data [n-1] PWM MSB [1] Data [0] Data [n-2] PWM MSB-1 PWM LSB PWM LSB+1 n-bit 5-bit 16-bit n-bit PWM Data 5 bits Dummy Data ‧‧‧ 00 (k-5)-bit (k-5) bits Dummy Data The 5 bits LSB and (k-5) bits MSB of 16-bit GD mode data of each channel must be filled with all “0” ( k=16-n & k > 5). For example: When the DM164 operates at 10 -bit PWM grayscale applicati on and IWAVE=”L”, the 5-bit LSB and 1-bit MSB of the 16-bit GD mode dat a must be filled with “0”. The 16-bit data format is showed below: Data [9] PWM MSB ‧‧‧ Data [1] Data [0] Data [8] PWM MSB-1 PWM LSB PWM LSB+1 10-bit 16-bit 10-bit PWM Data ‧‧‧ 00 5-bit 5 bits Dummy Data 1 bit 1-bit

before normal operation, like Figure 15 shows.

10 GCK

Figure 15. Power-on Reset Suggestion Timing Diagram

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 2 5 MSEL DIN GD[383]N_A DCK (DCKPH=L) DOUT (DOUTPH=L) DOUT (DOUTPH=H) LTH GD[0]1_A 1192N D&G Mode of Frame A GD Mode of Frame A D&G[0]1_A 384N 1 192N DCK (DCKPH=H) 1192N 384N 1 192N D&G[191]N_A GD Mode of Frame B 384N 13 8 4 N ER[383]N_A D&G Mode of Frame B D&G[191]N_A GD[383]N_A GD[383]N_A D&G[191]N_A D&G[191]N_A D&G[190]N_A D&G[190]N_A D&G[189]N_A D&G[191]N_BD&G[0]1_A D&G[0]1_A D&G[191]N_B D&G[191]N_B D&G[190]N_B D&G[0]1_B GD[383]N_B GD[382]N_B GD[0]1_B ER[383]N_A ER[382]N_A ER[382]N_A ER[381]N_A ER[0]1_A ER[0]1_A GD[383]N_B GD[383]N_B MSEL DIN GD[383]N_A DCK (DCKPH=L) D&G[191]N_A DOUT (DOUTPH=L) DOUT (DOUTPH=H) LTH GD Mode of Frame A 384N 1 192N DCK (DCKPH=H) 1 384N 1 192N GD Mode of Frame B 384N 13 8 4 N ER[383]N_A D&G Mode of Frame A 1 192N 1 192N D&G Mode of Frame B GD[0]1_A GD[383]N_A GD[383]N_A D&G[190]N_A D&G[0]1_A D&G[191]N_A D&G[191]N_A GD[383]N_A GD[383]N_A GD[383]N_B GD[382]N_B GD[0]1_B ER[382]N_A ER[383]N_A ER[382]N_A ER[381]N_A ER[0]1_A ER[0]1_A GD[383]N_B GD[383]N_B D&G[191]N_A D&G[191]N_A D&G[190]N_A D&G[190]N_AD&G[189]N_A D&G[0]1_A D&G[0]1_A D&G[191]N_B D&G[190]N_B D&G[0]1_B D&G[191]N_B D&G[191]N_B GD[383]N_B GD[383]N_B DM164 1[23]1[0] ... DIN DM164 2[23]2[0] ... DM164 n-1[23]n-1[0] ... DM164 n[23]n[0] ... 12 N - 1 N ... DOUTN Mode Transfer Operation Timing Diagram (N Chip Cascade) 1. D&G Mode First 2. GD Mode First

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 2 6 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 power 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 operating temperature can be refer to the figure below: 0 2 04 06 08 0 1 0 0 0.0 1.0 2.0 3.0 4.0 120 140 QFN48 LQFP48 Ambient Temperature Ta ( oC ) Power Dissipation Pd ( W ) Tj(max)=150 oC Rja(QFN48)=31.22 oC/W Rja(LQFP48)=57.86 oC/W Based on the Pd(max), the maximum allo wable voltage of output terminal can be determined by the following equation: Vout0 x Iout0 x Duty0 + . . . + Vout23 x Iout23 x Duty23 < Pd(max) – VDD x IDD

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 2 7 Package Outline Dimension LQFP48 LQFP48 - DIMENSION (mm) A - - 1.600 E 9.000 BSC A1 0.050 - 0.150 E1 7.000 BSC A2 1.350 - 1.450 e 0.500 BSC c1 0.090 - 0.160 b 0.170 - 0.270 D 9.000 BSC L 0.450 - 0.750 D1 7.000 BSC L1 1.000 REF

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 2 8 QFN48 QFN48 - DIMENSION (mm) A 0.700 0.750 0.800 E 7.000 BSC A3 0.203 REF e 0.500 BSC. b 0.180 0.250 0.300 k 0.200 - - D 7.000 BSC L 0.300 0.400 0.500 D2 5.100 5.200 5.300 y 0.080

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. DM164 8x3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.002 P a g e 2 9 The products listed herein are designed for ordinary electronic applications, 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, aerospa ce machinery, nuclear power control systems, disaster/crime-prevention equi pment and the like. Misusing those products may directly or indirectly endan ger 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 fu ll responsibility and indemnify. Silicon Touch Technology, Inc. and its distribut ors and all their officers and employees shall defend jointly and severally against any and all claims and litigation and all damages, cost and expenses associated with such intention and manipulation.