DM134B、DM135B Version : A.006 Issue Date : 2007/08/27 File Name : SP-DM134B,135B-A.006.doc Total Pages: 20 16-Bit Constant Current LED Drivers with 3.3v ~ 5v Supply Voltage 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 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. DM134B、DM135B 16-Bit Constant Current LED Drivers with 3.3v ~ 5v Supply Voltage General Description The DM134B、DM135B are constant current drivers specifically designed for LED display applications. The value of constant current can be varied using an external resistor. The devices include a 16-bit shift register, latches, and constant current drivers on a single Silicon CMOS chip. Features z z z z z z 3.3V~5V CMOS Compatible Input Maximum Clock Frequency: 25MHz (Cascade Operation) Maximum Output Voltage: 17V Package: DIP24, SOP24, SSOP24, QFN32 Package and Pin Layout: Pin layout and functionality are similar to those of the ST2221C. (Each characteristic value is different.) Constant Current Matching: (Ta = 25°C、VDD = 5.0V) Chip-to-Chip: ± 10.0% Bit-to-Bit: DM134B:± 4.0% @ IOUT = 30 ~ 90mA ± 6.0% @ IOUT = 20 ~ 30mA DM135B:± 4.0% @ IOUT = 20 ~ 60mA ± 6.0% @ IOUT = 5 ~ 20mA 16-Bit Constant Current LED Drivers -1- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Pin Connection (Top view) DIP24、SOP24、SSOP24 GND SERIAL-IN 1 2 24 VDD 23 R-EXT CLOCK LATCH OUT0 3 4 22 21 SERIAL-OUT 5 OUT1 6 OUT2 OUT3 7 8 20 19 18 OUT4 9 OUT5 OUT6 10 11 12 OUT7 ENABLE OUT15 OUT14 OUT13 17 16 OUT12 OUT11 15 14 OUT10 13 OUT8 OUT9 Pin Connection (Bottom view) OUT15 GND ENABLE SERIAL_OUT REXT 25 26 27 28 29 30 31 32 1 GND 23 2 GND OUT9 22 3 VDD OUT8 21 4 VDD OUT7 20 5 GND OUT6 19 6 GND OUT5 18 7 GND OUT4 17 8 GND Thermal PAD OUT10 OUT14 24 OUT13 OUT11 OUT12 QFN32 16 15 14 13 12 11 10 9 OUT3 OUT2 OUT1 OUT0 GND LATCH CLOCK SERIAL_IN 16-Bit Constant Current LED Drivers -2- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Block Diagram R-EXT OUT15 OUT1 OUT0 I-REG. ENABLE Q Q ST D ST D Q ST D LATCH SERIAL-IN D CK Q D D Q CK Q SERIAL-OUT CK CLOCK Timing Diagram 16 Clocks CLOCK 5V 0V SERIAL_IN 5V 0V LATCH 5V 0V ENABLE 5V 0V SERIAL_OUT 5V 0V Previous Data OUT0 ON OFF OUT1 ON OFF OUT2 ON OFF OUT3 ON OFF OUT13 ON OFF OUT14 ON OFF OUT15 ON OFF (Note) Latches are level sensitive (not edge triggered). LATCH-terminal = H level, latches become transparent; LATCH-terminal = L level, latches hold data. ENABLE-terminal = H level, all outputs (OUT0~15) are off. An external resistor is connected between R-EXT and GND for setting up the value of constant current. SERIAL-OUT changes state on the rising edges of clock. 16-Bit Constant Current LED Drivers -3- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Pin Description PIN No. 1 2 3 4 5~20 21 22 23 24 PIN NAME GND SERIAL-IN CLOCK LATCH OUT0~15 ENABLE SERIAL-OUT R-EXT VDD FUNCTION Ground terminal Input terminal of a data shift register Input terminal of a clock for shift register Input terminal of data strobe Output terminals Input terminal of output enable (active low) Output terminal of a data shift register Input terminal of an external resistor 5V Supply voltage terminal Equivalent Circuit of Inputs and Outputs 1. ENABLE terminal VDD 2. LATCH terminal VDD RIN (up) ENABLE LATCH RIN GND 3. CLOCK, SERIAL-IN terminal VDD GND 4. SERIAL-OUT terminal VDD CLOCK, SERIAL-OUT SERIAL-IN GND 16-Bit Constant Current LED Drivers GND -4- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Maximum Ratings (Ta = 25°C, Tj(max) = 150°C) CHARACTERISTIC SYMBOL RATING UNIT Supply Voltage Input Voltage VDD VIN V V Output Current IOUT Output Voltage Clock Frequency VOUT fCLK GND Terminal Current IGND 0 ~ 7.0 -0.4 ~ VDD+0.4 90 ( DM134B ) 60 ( DM135B ) -0.3 ~ 17 25 1440 ( DM134B ) 960 ( DM135B ) 2.5 (DIP-24 : Ta=25°C) 1.58 (SOP-24 : Ta=25°C) 1.39 (SSOP-24 : Ta=25°C) 3.08 (QFN-32 : Ta=25°C) 50.0 (DIP-24) 79.2 (SOP-24) Power Dissipation (On 4-layer PCB) PD Thermal Resistance (On 4-layer PCB) Rth(j-a) 90.2 (SSOP-24) mA V MHz mA W °C/W 40.6 (QFN-32) Operating Temperature Storage Temperature Topr Tstg °C °C -40 ~ 85 -55 ~ 150 Recommended Operating Condition CHARACTERISTIC Supply Voltage Output Voltage Operating temperature Output Current Input Voltage LATCH Pulse Width CLOCK Pulse Width Set-up Time for DATA Hold Time for DATA Set-up Time for LATCH Clock Frequency SYMBOL VDD VOUT TOPR IOH IOL VIH VIL tw LAT tw CLK tsetup(D) thold(D) tsetup(L) fCLK CONDITION ⎯ ⎯ ⎯ MIN. 3.0 TYP. 5.0 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ -40 SERIAL-OUT SERIAL-OUT ⎯ ⎯ ⎯ ⎯ 0.7VDD -0.3 VDD = 3.0 ~ 5.5 V 15 15 10 5 15 Cascade operation ⎯ 16-Bit Constant Current LED Drivers -5- MAX. 5.5 17 85 1.0 -1.0 VDD+0.3 0.3VDD UNIT V V ℃ ⎯ ⎯ ⎯ ⎯ ⎯ ns ns ns ns ns MHz 25 mA V Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Electrical Characteristics (VDD = 5.0 V, Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. Input Voltage “H” Level VIH ⎯ 0.7VDD ⎯ VDD Input Voltage “L” Level VIL ⎯ GND ⎯ 0.3VDD Output Leakage Current IOH VOH = 17 V ⎯ ⎯ 1.0 VOL IOL = 1.0 mA ⎯ ⎯ 0.4 VOH IOH = -1.0 mA 4.6 ⎯ ⎯ ⎯ ±1.5 ±4 REXT = 377Ω 36.0 40.0 44.0 REXT = 900Ω 18.0 20.0 22.0 ⎯ 0.1 0.5 %/V ⎯ 1 3 %/V Output Voltage ( S - OUT) DM134B Output Current (Bit-Bit) ΔIout DM135B DM134B Output Current (Chip-Chip) Iout DM135B IDM134B Output Voltage Regulation IDM135B Supply Voltage Regulation Reference Voltage Regulation Pull-Up Resistor Pull-Down Resistor (1 channel on) uA V % REXT = 900Ω VOUT = 1.2V mA (1 channel on) Vout = 1.2V ~ 5.0V REXT = 377Ω (% / Vout) REXT =900Ω Vdd = 3.0V ~ 5.5V ΔVrext Rext = 300Ω ~ 3KΩ ⎯ ⎯ ±1 % / KΩ RIN(up) ⎯ 150 300 600 KΩ RIN(down) ⎯ 100 200 400 KΩ Idd (off) DM135B DM134B Supply Current “ON” V REXT = 377Ω VOUT = 1.2V % / VDD DM134B Supply Current “OFF” UNIT Idd (on) DM135B REXT = OPEN, all outputs off ⎯ 2 4 REXT = 210Ω, all outputs off ⎯ 14 28 REXT = OPEN, all outputs off ⎯ 2 4 REXT = 300Ω, all outputs off ⎯ 14 28 REXT = 630Ω, all outputs off ⎯ 5.5 11 REXT = 210Ω, all outputs on ⎯ 14 28 REXT = 300Ω, all outputs on ⎯ 14 28 REXT = 630Ω, all outputs on ⎯ 5.5 11 16-Bit Constant Current LED Drivers -6- mA Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Switching Characteristics (Ta = 25 °C unless otherwise noted) DM134B CHARACTERISTIC Propagation ENABLE-OUTn Delay Time (“L” to “H”) CLK-SOUT Propagation ENABLE-OUTn Delay Time (“H” to “L”) CLK-SOUT Output Current Rise Time Output Current Fall Time SYMBOL tpLH tpHL tor tof CONDITION VDD=5.0V VIH=VDD VIL=GND REXT=420Ω VL=5.0V RL=107.5Ω CL=15pF MIN. TYP. MAX. ⎯ 110 150 UNIT ⎯ 20 25 ⎯ 95 170 ⎯ 20 25 ⎯ 600 800 ns ⎯ 45 60 ns MIN. TYP. MAX. UNIT ⎯ 20 40 ⎯ 20 25 ⎯ 30 60 ⎯ 20 25 25 50 100 ns 15 30 60 ns ns ns DM135B CHARACTERISTIC Propagation ENABLE-OUTn Delay Time (“L” to “H”) CLK-SOUT Propagation ENABLE-OUTn Delay Time (“H” to “L”) CLK-SOUT Output Current Rise Time Output Current Fall Time SYMBOL tpLH tpHL tor tof CONDITION VDD=5.0V VIH=VDD VIL=GND REXT=630Ω VL=5.0V RL=150Ω CL=13pF 16-Bit Constant Current LED Drivers -7- ns ns Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Test Circuit DC characteristic IDD VDD OUT0 ENABLE IOL CLOCK IIL ,IIH LATCH VIL ,VIH OUT15 SERIAL-IN R-EXT GND SERIAL-OUT I ref AC characteristic RL VDD VIL ,VIH OUT0 ENABLE SW- CLOCK MATRIX LATCH CL RL OUT15 SERIAL-IN R-EXT GND SERIAL-OUT CL CL 16-Bit Constant Current LED Drivers -8- VL Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Timing Diagram 1. CLOCK-SERIAL-IN, SERIAL-OUT, OUTn (current) tr tf twCLK CLOCK SERIAL-IN 90% 50% 10% tsetup 90% 50% 10% twCLK 50% thold 50% 50% tof tor 90% 50% 10% OUTn (current) 90% 50% 10% tpLH tpHL 50% 50% SERIAL-OUT tpHL tpLH 2. CLOCK-LATCH 50% CLOCK SERIAL-IN “L” level = DATA HOLD thold(L) LATCH 50% 50% tsetup(L) 3. ENABLE-OUTn (current) ENABLE 50% 50% tpHL tpLH OUTn(current) 16-Bit Constant Current LED Drivers 50% 50% -9- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Output Current vs. External Resistor DM134B 100 90 Iout (mA) 80 70 60 50 40 30 20 0 200 400 Rext 600 800 (Ohm) DM135B 70.00 60.00 Iout (mA) 50.00 40.00 30.00 20.00 10.00 0.00 0 500 1000 1500 2000 2500 3000 3500 Rext (Ohm) Note: Conditions: Vref=1.28V DM134B:Iout ≈ Vref / Rext * 13.1, DM135B:Iout ≈ Vref / Rext * 13.7. The resistor should be placed as close to the Rext terminal as possible to avoid the noise influence. 16-Bit Constant Current LED Drivers -10- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Output Current Performance vs. Output Voltage DM134B Io u t - V o u t 100 90 80 Iout(mA) 70 60 50 40 30 20 10 0 0 0 .2 0 .4 0 .6 0 .8 1 1 .2 1 .4 1 .6 1 .8 2 V o u t(V ) DM135B Io u t - V o u t 70 60 Iout (mA) 50 40 30 20 10 0 0 0 .2 0 .4 0 .6 0 .8 1 1 .2 1 .4 1 .6 1 .8 2 V o u t (V ) Note: In order to obtain a good constant current output, a suitable output voltage is necessary. Users can get related information about the minimum output voltage from the above graphs. Even under the same output current condition, the minimum output voltage required for each part is different. 16-Bit Constant Current LED Drivers -11- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Pd - Ta 3.50 Imax - Ta ( DM134 ) 100.00 QFN 90.00 3.00 70.00 2.00 Imax (mA) Pd (W) 2.50 QFN DIP 80.00 DIP SOP 1.50 SSOP 1.00 SOP 60.00 50.00 SSOP 40.00 30.00 20.00 0.50 Vdd = 5V Vout = 1.5V 16bit Active 10.00 0.00 0.00 0 20 40 60 80 100 120 140 160 0 Ta 20 40 60 80 100 120 140 160 Ta Imax - Ta ( DM135 ) 60.00 50.00 DIP Imax (mA) 40.00 QFN SOP SSOP 30.00 20.00 10.00 Vdd = 5V Vout = 1.5V 16bit Active 0.00 0 20 40 60 80 100 120 140 160 Ta Note As the power dissipation of a semiconductor chip is limited by its package and ambient temperature, this device requires a maximum output current given by an operating condition. The maximum allowable power consumption (Pd (max)) of this device is calculated as follows: (Tj (junction temperature) (max) - Ta (ambient temperature) )(°C ) Pd (max)(Watt ) = Rth (°C / Watt ) Based on the Pd (max), the maximum allowable current can be calculated as follows: Iout = ( Pd – VDD‧IDD) / ( # outputs‧Vo‧Duty ) 16-Bit Constant Current LED Drivers -12- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. System Configuration Example [1] Output current (IOUT) Sink current is set by the external resistor as shown in the figure of Iout vs. Rext. [2] LED supply voltage (VLED) setup VLED = VCE ( Tr Vsat ) + Vf ( LED forward voltage ) + VO ( IC output voltage) To prevent too much power from dissipating by the higher VLED of the device, an additional R can be used to reduce the Vout when the outputs consume current is as follows: R= VLED − VCE − V f − VO (min) I O (max) * Bit (max) VLED = 3~4 (V) ＋ Vf — SCAN OUT0 ＋ VCE — Vo ENABLE CLOCK LATCH SERIAL-IN R-EXT GND OUT15 R SERIAL-OUT CPU OUT0 ENABLE CLOCK LATCH SERIAL-IN R-EXT GND OUT15 SERIAL-OUT Note This device has only one ground pin shared by signal, output sink current, and power ground. It is advisable to pattern the ground layout with minimized inductance so that the switching noise induced by the input signals and the output sink current would not cause chip malfunction. To prevent drivers’ outputs from damaging by overshoot stresses, it is also advisable not to turn off the drivers and scan transistors simultaneously. For the QFN package, the IC’s thermal pad, which is internally connected to the bottom side of chip, should be connected to GND. In addition, a good PCB layout pattern of the thermal pad is required in order to have a better performance in thermal effect. 16-Bit Constant Current LED Drivers -13- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Package Outline P-DIP 24 UNIT：INCH 1.250 ± 0.03 0.355 ± 0.02 0.300 0.258 ± 0.005 θ=7 ~15 0.130 ± 0.05 0.130 ± 0.02 SEATING PLANE 0.210 0.100typ 0.018typ 0.060typ 16-Bit Constant Current LED Drivers -14- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Package Outline DIP(Shr) 13 1 12 A A2 E E1 24 E2 D L A1 SEATING PLANE e b1 b DIMENSIONS IN INCH SYMBOLS MIN. MAX. DIMENSIONS IN MM MIN. MAX. A - 0.210 - 5.334 A1 0.015 - 0.381 - A2 0.125 0.135 3.175 3.429 b 0.040TYP. 1.016TYP. b1 0.018TYP. 0.457TYP. D 0.880 E 0.920 22.352 0.300TYP. 23.368 7.620TYP. E1 0.245 0.255 6.223 6.477 E2 0.335 0.375- 8.509 9.525 e 0.070TYP. 1.778TYP. L 0.115 0.150 2.921 3.810 Θ 0° 15° 0° 15° 16-Bit Constant Current LED Drivers -15- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Package Outline SOP24 0.020*45° 0.406 ± 0.013 0.295 ± 0.004 UNIT：INCH 0.016typ 0.050typ 0.600 ± 0.014 16-Bit Constant Current LED Drivers -16- 0.010 0.099± 0.006 0.012max 0.004max 0.035±0.015 θ=0~8 Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Package Outline SSOP24 0.020*45° 0.236 ± 0.008 0.154 ± 0.004 UNIT：INCH 0.012typ 0.025typ 0.064± 0.011 16-Bit Constant Current LED Drivers 0.01max 0.004max -17- 0.010 0.025+0.025 -0.009 0.341 ± 0.004 θ=0~8 Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. Package Outline QFN32 TOP VIEW BOTTOM VIEW 0.25 C D2 D 25 32 25 24 8 17 24 1 17 8 L E E2 e 1 32 0.25 C 9 16 16 9 e b 0.10 M C AB A 0.10 C A3 A1 SEATING PLANE SYMBOL A A1 A3 b D D2 E E2 e L y MIN. 0.70 0 0.18 1.25 1.25 0.30 DIMENSION (mm) NOM. 0.75 0.02 0.25 REF 0.23 5.00 BSC 2.70 5.00 BSC 2.70 0.50 BSC 0.40 0.10 yC MAX. 0.80 0.05 MIN. 27.6 0 0.30 7.09 3.25 49.21 3.25 49.21 0.50 11.81 DIMENSION (MIL) NOM. 29.5 0.79 9.84 REF 9.06 196.85 BSC 106.30 196.85 BSC 106.30 19.69 BSC 15.75 3.94 MAX. 31.5 1.97 11.81 127.95 127.95 19.69 Note: 1.DIMENSIONING AND TOLERANCING CONFORM TO ASME Y145.5M-1994. 2. REFER TO JEDEC STD. MO-220 WHHD-2 ISSUE A 16-Bit Constant Current LED Drivers -18- Version：A.006 點晶科技股份有限公司 DM134B、DM135B SILICON TOUCH TECHNOLOGY INC. 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, aerospace machinery, nuclear power control systems, disaster/crime-prevention equipment and the like. Misusing 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 responsibility and indemnify. Silicon Touch Technology, Inc. and its distributors 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. 16-Bit Constant Current LED Drivers -19- Version：A.006