DM134、DM135、DM136 Version : A.013 Issue Date : 2006/8/1 File Name : SP-DM134,135,136-A.013.doc Total Pages : 20 16-Bit Constant Current LED Drivers 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. Fax：886-3-5645626 Tel：886-3-5645656 點晶科技股份有限公司 DM134、DM135、DM136 SILICON TOUCH TECHNOLOGY INC. DM134、DM135、DM136 16-Bit Constant Current LED Drivers General Description The DM134、DM135、DM136 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 5V CMOS Compatible Input Maximum Clock Frequency: 25MHz (Cascade Operation) Maximum Output Voltage: 17V Package: DIP24, SOP24, SSOP24, QFN32, TSSOP24-exposedPAD(DM135) 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: DM134: ± 4.0% @ IOUT = 30 ~ 90mA ± 6.0% @ IOUT = 20 ~ 30mA DM135: ± 4.0% @ IOUT = 10 ~ 50mA ± 6.0% @ IOUT = 5 ~ 10mA DM136: ± 4.0% @ IOUT = 3 ~ 15mA 16-Bit Constant Current LED Drivers -1- Version：A.013 點晶科技股份有限公司 DM134、DM135、DM136 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.013 點晶科技股份有限公司 DM134、DM135、DM136 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.013 點晶科技股份有限公司 DM134、DM135、DM136 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.013 點晶科技股份有限公司 DM134、DM135、DM136 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+0.4 100 ( DM134 ) 60 ( DM135 ) 20 ( DM136 ) -0.3 ~ 17 25 1600 ( DM134 ) 960 ( DM135 ) 320 ( DM136 ) 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) mA V MHz mA W °C/W 90.2 (SSOP-24) 31 (TSSOP-24, Exposed PAD) 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 IO IOH IOL VIH VIL tw LAT tw CLK tsetup(D) thold(D) tsetup(L) fCLK CONDITION ⎯ ⎯ ⎯ OUTn SERIAL-OUT SERIAL-OUT MIN. 4.5 TYP. 5.0 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ -40 5 ⎯ ⎯ ⎯ ⎯ 0.7VDD -0.3 VDD = 4.5 ~ 5.5 V 15 15 10 5 15 Cascade operation ⎯ 16-Bit Constant Current LED Drivers -5- MAX. 5.5 17 85 85 1.0 -1.0 VDD+0.3 0.3VDD UNIT V V ℃ ⎯ ⎯ ⎯ ⎯ ⎯ ns ns ns ns ns MHz 25 mA V Version：A.013 點晶科技股份有限公司 DM134、DM135、DM136 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 Output Voltage ( S - OUT) DM134 Output Current (Bit-Bit) ΔIout DM135 Output Current (Chip-Chip) Iout V uA V REXT = 377Ω VOUT = 1.2V REXT = 1260Ω (1 channel on) % DM136 REXT = 3830Ω DM134 REXT = 377Ω 36.0 40.0 44.0 REXT = 1260Ω 9.38 10.42 11.46 REXT = 3830Ω 2.7 3 3.3 ⎯ 0.1 0.5 %/V DM135 DM136 IDM134 Output Voltage Regulation UNIT IDM135 IDM136 VOUT = 1.2V (1 channel on) Vout = 1.2V ~ 5.0V (% / Vout) mA REXT = 377Ω REXT =1260Ω REXT = 3830Ω Supply Voltage Regulation % / VDD ⎯ 0.5 1.5 %/V Pull-Up Resistor RIN(up) ⎯ 150 300 600 KΩ RIN(down) ⎯ 100 200 400 KΩ REXT = OPEN, all outputs off ⎯ 7.4 10 REXT = 210Ω, all outputs off ⎯ 24 34 REXT = OPEN, all outputs off ⎯ 7.4 10 Pull-Down Resistor DM134 Supply Current “OFF” Idd (off) DM135 REXT = 630Ω, all outputs off ⎯ 16 22 REXT = OPEN, all outputs off ⎯ 7.4 10 REXT = 2100Ω, all outputs off ⎯ 12 17 DM134 REXT = 210Ω, all outputs on ⎯ 26 36 DM135 REXT = 630Ω, all outputs on ⎯ 18 25 DM136 REXT = 2100Ω, all outputs on ⎯ 14 20 DM136 Supply Current “ON” Idd (on) Vdd = 4.5V ~ 5.5V 16-Bit Constant Current LED Drivers -6- mA Version：A.013 點晶科技股份有限公司 DM134、DM135、DM136 SILICON TOUCH TECHNOLOGY INC. Switching Characteristics (Ta = 25 °C unless otherwise noted) DM134 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=210Ω VL=5.0V RL=47Ω CL=13pF MIN. TYP. MAX. ⎯ 15 30 UNIT ⎯ 20 25 ⎯ 25 30 ⎯ 20 25 30 75 150 ns 10 20 40 ns MIN. TYP. MAX. UNIT ⎯ 20 40 ⎯ 20 25 ⎯ 30 60 ⎯ 20 25 25 50 100 ns 15 30 60 ns MIN. TYP. MAX. UNIT ⎯ 20 40 ⎯ 20 25 ⎯ 60 120 ⎯ 20 25 40 95 180 ns 15 35 70 ns ns ns DM135 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 ns ns DM136 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=2100Ω VL=5.0V RL=475Ω CL=13pF 16-Bit Constant Current LED Drivers -7- ns ns Version：A.013 點晶科技股份有限公司 DM134、DM135、DM136 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 CL SW- CLOCK MATRIX LATCH RL OUT15 SERIAL-IN R-EXT GND SERIAL-OUT CL CL 16-Bit Constant Current LED Drivers -8- VL Version：A.013 點晶科技股份有限公司 DM134、DM135、DM136 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.013 點晶科技股份有限公司 DM134、DM135、DM136 SILICON TOUCH TECHNOLOGY INC. Output Current vs. External Resistor DM134 DM135 Iout - Rext ( DM135 ) 120.00 60.00 100.00 50.00 80.00 40.00 Iout (mA) Iout (mA) Iout - Rext ( DM134 ) 60.00 30.00 40.00 20.00 20.00 10.00 0.00 0.00 0 200 400 600 0 800 2000 4000 6000 8000 10000 12000 Rext (Ohm) Rext (Ohm) DM136 Iout - Rext ( DM136 ) Conditions: Vout=1.8V, Vref=1.27V DM134: Iout ≈ Vref / Rext * 12 DM135: Iout ≈ Vref / Rext * 10.3 DM136: Iout ≈ Vref / Rext * 9 20 18 16 Iout (mA) 14 12 10 8 6 4 2 0 0 2000 4000 6000 8000 Rext (Ohm) Note: 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.013 點晶科技股份有限公司 DM134、DM135、DM136 SILICON TOUCH TECHNOLOGY INC. Output Current Performance vs. Output Voltage DM134 DM135 Iout - Vout ( DM135 ) Iout - Vout ( DM134) 100.00 60 50 80.00 40 Iout (mA) Iout (mA) 60.00 30 40.00 20 20.00 10 0 0.00 0 1 2 3 4 0 5 1 2 3 4 5 Vout (V) Vout (V) DM136 Iout - Vout ( DM136 ) Iout - Vout(min) 15.00 90 80 12.00 70 DM134 60 Iout (mA) Iout (mA) 9.00 6.00 50 40 30 DM135 20 3.00 10 0.00 0 Note: DM136 0 1 2 3 4 5 0 Vout (V) 0.5 1 1.5 2 Vout (min) (V) 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.013 點晶科技股份有限公司 DM134、DM135、DM136 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 20 40 60 Ta 80 100 120 140 160 Ta Imax - Ta ( DM135 ) Imax - Ta ( DM136 ) 60.00 16.00 50.00 14.00 QFN DIP 12.00 SOP Imax (mA) Imax (mA) 40.00 QFN SSOP 30.00 20.00 SOP DIP SSOP 10.00 8.00 6.00 4.00 10.00 Vdd = 5V Vout = 1.5V 16bit Active 0.00 2.00 Vdd = 5V Vout = 1.5V 16bit Active 0.00 0 20 40 60 80 100 120 140 160 0 Ta 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.013 點晶科技股份有限公司 DM134、DM135、DM136 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 supply 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 ENABLE ＋ VCE — Vo 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.013 點晶科技股份有限公司 DM134、DM135、DM136 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.013 點晶科技股份有限公司 DM134、DM135、DM136 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 -15- 0.010 0.099± 0.006 0.012max 0.004max 0.035±0.015 θ=0~8 Version：A.013 點晶科技股份有限公司 DM134、DM135、DM136 SILICON TOUCH TECHNOLOGY INC. Package Outline SSOP24 0.020*45° 0.236 ± 0.008 0.154 ± 0.004 UNIT：INCH 0.012typ 0.025typ 0.341 ± 0.004 0.004max 16-Bit Constant Current LED Drivers 0.01max -16- 0.010 0.064± 0.011 0.025±0.025 θ=0~8 Version：A.013 點晶科技股份有限公司 DM134、DM135、DM136 SILICON TOUCH TECHNOLOGY INC. Package Outline TSSOP24 (Exposed PAD) D1 D E E1 E2 DETAIL A 0.25 MM A A2 S 0.05MM C e b A1 GAUGE PLANE SEATING PLANE DETAIL A SYMBOL A A1 A2 b D D1 E2 E1 E e L1 L S θ JEDEC DIMENSION IN MM MIN. NOM. MAX. 1.2 0.00 0.15 0.80 1.00 1.05 0.19 0.3 7.7 7.8 7.9 3.61 REF 1.95 REF 4.3 4.4 4.5 6.40 BSC 0.65 BSC 1.00 REF 0.45 0.60 0.75 0.2 0.5 0 8 MO - 153 (ADT) 16-Bit Constant Current LED Drivers L L1 NOTES: 1. DIMENSION D DOES NOT INCLUDE MODE FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.15 PER SIDE. 2. DIMENSION E1 DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 PER SIDE. 3. DIMENSION b DOES NOT INCLUDE DAMBER PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08MM TOTAL IN EXCESS OF THE b DIMENSION AT MAXIMUM MATERIAL CONDITION. DAMBAR CANNOR BE LOCATED ON THE LOWER RADIUS OF THE FOOT. MINIMUM SPACE BETWEEN PROTRUSION AND ADJACENT LEAD IS 0.07MM. 4. DIMENSIONS D AND E1 TO BE DETERMINED AT DATUM PLANE. -17- Version：A.013 θ 點晶科技股份有限公司 DM134、DM135、DM136 SILICON TOUCH TECHNOLOGY INC. Package Outline QFN32 TOP VIEW BOTTOM VIEW D D2 0.25 C 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.013 點晶科技股份有限公司 DM134、DM135、DM136 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.013