DM135B

DM134B ETC

Document overview

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Technical content

DM134B、、、、DM135B Version : A.001 Issue Date : 2004/4/29 File Name : SP-DM134B,135B-A.001.doc Total Pages: 18 1 6 - B i t C o n s t a n t C u r r e n t L E D D r i v e r s w i t h 3.3v ~ 5v Supply Voltage 新竹市科學園區展業一路新竹市科學園區展業一路新竹市科學園區展業一路新竹市科學園區展業一路 9999 號號號號 7777 樓之樓之樓之樓之 1111 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

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-1- Version：：：：A.001 Preliminary DM134B、、、、DM135B 1 6 - B i t C o n s t a n t C u r r e n t L E D D r i v e r sw i t h 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

/circle6 3.3V~5V CMOS Compatible Input /circle6 Maximum Clock Frequency: 25MHz (Cascade Operation) /circle6 Maximum Output V oltage: 17V /circle6 Package: DIP24, SOP24, SSOP24, QFN32 /circle6 Package and Pin Layout: Pin layout and functionality are similar to those of the ST2221C. (Each characteristic value is different.) /circle6 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

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-2- Version：：：：A.001 Preliminary Pin Connection (Top view) DIP24、SOP24、SSOP24 Pin Connection (Bottom view) QFN32 GND SERIAL-IN SERIAL-OUT CLOCK OUT0 OUT1 OUT2 OUT3 OUT12 OUT13 OUT14 OUT15 R-EXT VDD 12 13 ENABLELATCH OUT4 OUT5 OUT6 OUT7 OUT11 OUT10 OUT9 OUT8 GND GND VDD REXT GND ENABLE GND OUT14 OUT13 OUT5 OUT12 OUT11 OUT9 OUT8 SERIAL_IN OUT10 GND GND GND LATCH GND OUT1 OUT2 OUT3 OUT4 OUT6 OUT7 VDD OUT0 OUT15 CLOCK SERIAL_OUT Thermal PAD 16 15 14 13 12 11 1 0 9 3231302928272625

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-3- Version：：：：A.001 Preliminary Block Diagram Timing Diagram (Note) Latches are level sensitive (not edge triggered). LA TCH-terminal = H level, latches become transparent; LA TCH-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. CLOCK SERIAL_IN LATCH ENABLE OUT0 OUT1 OUT2 OUT3 OUT13 OUT14 OUT15 ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF 0VSERIAL_OUT Previous Data

16 Clocks

Q CLOCK I-REG . SERIAL-IN LATCH R-EXT SERIAL-OUT OUT15OUT1 OUT0 DSTST QQ D ENABLE

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-4- Version：：：：A.001 Preliminary Pin Description PIN No. PIN NAME FUNCTION

1 GND Ground terminal

2 SERIAL-IN Input terminal of a data shift register

3 CLOCK Input terminal of a clock for shift register

4 LATCH Input terminal of data strobe

5~20 OUT0~15 Output terminals

21 ENABLE Input terminal of output enable (active low)

22 SERIAL-OUT Output terminal of a data shift register

23 R-EXT Input terminal of an external resistor

24 V DD 5V Supply voltage terminal

Equivalent Circuit of Inputs and Outputs 1. ENABLE terminal 2. LATCH terminal 3. CLOCK, SERIAL-IN terminal 4. SERIAL-OUT terminal CLOCK, SERIAL-IN GND VDD GND VDD RIN (up) ENABLE SERIAL-OUT GND VDD LATCH GND VDD RIN

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-5- Version：：：：A.001 Preliminary Maximum Ratings (Ta = 25°°°°C, Tj(max) = 150°°°°C) CHARACTERISTIC SYMBOL RA TING UNIT Supply V oltage V DD 0 ~ 7.0 V Input V oltage V IN -0.4 ~ VDD+0.4 V 90 ( DM134B ) Output Current I OUT 60 ( DM135B ) mA Output V oltage V OUT -0.3 ~ 17 V Clock Frequency f CLK 25 MHz 1440 ( DM134B ) GND Terminal Current I GND 960 ( DM135B ) mA 2.5 (DIP-24 : Ta=25°C) 1.58 (SOP-24 : Ta=25°C) 1.39 (SSOP-24 : Ta=25°C) Power Dissipation (On 4-layer PCB) PD 3.08 (QFN-32 : Ta=25°C) W 50.0 (DIP-24) 79.2 (SOP-24) 90.2 (SSOP-24) Thermal Resistance (On 4-layer PCB) Rth(j-a) 40.6 (QFN-32) °C/W Operating Temperature Topr -40 ~ 85 °C Storage Temperature T stg -55 ~ 150 °C Recommended Operating Condition CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT Supply V oltage VDD  3.0 5.0 5.5 V Output V oltage VOUT    17 V Operating temperature T OPR  -40  85 ℃ IOH SERIAL-OUT   1.0 Output Current IOL SERIAL-OUT   -1.0 mA VIH  0.7VDD  VDD+0.3 Input V oltage VIL  -0.3  0.3VDD V LA TCH Pulse Width tw LAT 15   ns CLOCK Pulse Width tw CLK 15   ns Set-up Time for DA TA tsetup (D) 20   ns Hold Time for DA TA thold (D) 20   ns Set-up Time for LA TCH tsetup (L) VDD = 3.0 ~ 5.5 V 15   ns Clock Frequency fCLK Cascade operation   25 MHz

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-6- Version：：：：A.001 Preliminary Electrical Characteristics (VDD = 5.0 V, Ta = 25°°°°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT Input V oltage “H” Level VIH  0.7VDD  VDD Input V oltage “L” Level VIL  GND  0.3VDD V Output Leakage Current IOH VOH = 17 V   1.0 uA VOL IOL = 1.0 mA   0.4 Output V oltage ( S - OUT) VOH IOH = -1.0 mA 4.6   V DM134B REXT = 377Ω Output Current (Bit-Bit) ΔIout DM135B VOUT = 1.2V (1 channel on) REXT = 900Ω  ±1.5 ±4 % DM134B REXT = 377Ω 36.0 40.0 44.0 Output Current (Chip-Chip) Iout DM135B VOUT = 1.2V (1 channel on) REXT = 900Ω 18.0 20.0 22.0 mA IDM134B REXT = 377 Ω Output V oltage Regulation IDM135B V out = 1.2V ~ 5.0V (% / V out) REXT =900Ω  0.1 0.5 % / V Supply V oltage Regulation % / VDD Vdd = 3.0V ~ 5.5V  1 3 % / V Pull-Up Resistor RIN(up)  150 300 600 K Ω Pull-Down Resistor RIN(down)  100 200 400 K Ω REXT = OPEN, all outputs off  2 4 DM134B REXT = 210Ω , all outputs off  14 28 REXT = OPEN, all outputs off  2 4 Supply Current “OFF” Idd (off) DM135B REXT = 300Ω , all outputs off  14 28 DM134B REXT = 210Ω , all outputs on  14 28 Supply Current “ON” Idd (on) DM135B REXT = 300Ω , all outputs on  14 28 mA

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-7- Version：：：：A.001 Preliminary Switching Characteristics (Ta = 25 °°°°C unless otherwise noted) DM134B CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT ENABLE-OUTn  20 40 Propagation Delay Time (“L” to “H”) CLK-SOUT tpLH  20 25 ns ENABLE-OUTn  50 100 Propagation Delay Time (“H” to “L”) CLK-SOUT tpHL  20 25 ns Output Current Rise Time tor  550 800 ns Output Current Fall Time tof VDD=5.0V VIH=VDD VIL=GND REXT=210Ω VL=5.0V RL=47Ω CL=15pF  20 40 ns DM135B CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT ENABLE-OUTn  20 40 Propagation Delay Time (“L” to “H”) CLK-SOUT tpLH  20 25 ns ENABLE-OUTn  30 60 Propagation Delay Time (“H” to “L”) CLK-SOUT tpHL  20 25 ns Output Current Rise Time tor 25 50 100 ns Output Current Fall Time tof VDD=5.0V VIH=VDD VIL=GND REXT=630Ω VL=5.0V RL=150Ω CL=13pF 15 30 60 ns

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-8- Version：：：：A.001 Preliminary Test Circuit DC characteristic AC characteristic IDD IIL ,IIH VIL ,VIH I ref IOL SERIAL-OUT OUT15 OUT0VDD GNDR-EXT LATCH SERIAL-IN CLOCK ENABLE VIL ,VIH VL CL CL CL RL RL SERIAL-OUT OUT15 OUT0VDD GNDR-EXT LATCH SW- MATRIX SERIAL-IN CLOCK ENABLE

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-9- Version：：：：A.001 Preliminary Timing Diagram 1. CLOCK-SERIAL-IN, SERIAL-OUT, OUTn (current) 2. CLOCK-LATCH 3. ENABLE-OUTn (current) 50%50% 50%50% tpHLtpLH OUTn(current) ENABLE thold tsetup 50%50% 90% 50%50% 10%10% 50% 90% SERIAL-IN OUTn (current) CLOCK twCLK tftr 90% 50% 10%10% 50% 90% tof tpHLtpLH tor twCLK SERIAL-OUT 50% 50% tpLH tpHL 50% “L” level = DATA HOLD SERIAL-IN LATCH CLOCK tsetup(L) 50% thold(L) 50%

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-10- Version：：：：A.001 Preliminary Output Current vs. External Resistor DM134B DM135B Note: The resistor should be placed as close to the Rext terminal as possible to avoid the noise influence. Conditions: Vref=1.30V DM134B:Iout ≈ Vref / Rext * 13.1, DM135B:Iout ≈ Vref / Rext * 13.9. 100 0 200 400 600 800 Rext (Ohm) Iout (mA) 0 500 1000 1500 2000 Rext (Ohm) Iout (mA)

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-11- Version：：：：A.001 Preliminary Output Current Performance vs. Output Voltage DM134B DM135B 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. Iout - V out 100 Vo u t ( V) Iout(mA) Iout - V out Vo u t ( V) Iout (mA)

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-12- Version：：：：A.001 Preliminary 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: )/(Rth ))( )emperature(ambient t Ta- (max) e)temperatur(junction (Tj)(max)( WattC CWattPd ° Based on the Pd (max), the maximum allowable current can be calculated as follows: Iout = ( Pd – VDD‧IDD) / ( # outputs‧Vo‧Duty ) Imax - Ta ( DM135 ) 0.00 10.00 20.00 30.00 40.00 50.00 60.00 0 2 04 06 08 0 100 120 140 160 Ta Imax (mA) Imax - Ta ( DM134 ) 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00 02 04 0 6 0 8 0 100 120 140 160 Ta Imax (mA) Pd - Ta 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 02 04 0 6 08 0 100 120 140 160 Ta Pd (W) Vdd = 5V V out = 1.5V 16bit Active Vdd = 5V V out = 1.5V 16bit Active DIP QFN SSOP DIP QFN SSOP SSOP QFN DIP SOP SOP SOP

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-13- Version：：：：A.001 Preliminary 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 (V LED) setup VLED = VCE ( Tr Vsat ) + Vf ( LED forward voltage ) + VO ( IC output voltage) To prevent too much power from dissipating by the higher V LED of the device, an additional R can be used to reduce the V out when the outputs consume current is as follows: R = (max)*(max) (min) BitI VVVV O OfCELED −−− 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. SERIAL-OUT VLED = 3~4 (V) OUT15 OUT0 GNDR-EXT LATCH CPU SERIAL-IN SCAN CLOCK SERIAL-OUT OUT15 OUT0 GNDR-EXT LATCH SERIAL-IN CLOCK R VCE —Vf Vo ENABLE ENABLE

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-14- Version：：：：A.001 Preliminary Package Outline P-DIP 24 UNIT：INCH 0.100typ 0.018typ 0.060typ 0.130 ± 0.02 SEA TING PLANE 0.130 ± 0.05 0.210 1.250 ± 0.03 0.258 ± 0.005 0.300 0.355 ± 0.02 θ=7 ~15

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-15- Version：：：：A.001 Preliminary Package Outline SOP24 0.295 ± 0.004 0.020*45° 0.406 ± 0.013 0.050typ 0.016typ 0.600 ± 0.014 0.099± 0.006 0.012max 0.004max θ=0~8 0.010 0.035±0.015 UNIT：INCH

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-16- Version：：：：A.001 Preliminary Package Outline SSOP24 0.154 ± 0.004 0.020*45° 0.236 ± 0.008 0.025typ 0.012typ 0.341 ± 0.004 0.064± 0.011 0.01max 0.004max θ=0~8 0.010 0.025±0.025 UNIT：INCH

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-17- Version：：：：A.001 Preliminary Package Outline QFN32 DIMENSION (mm) DIMENSION (MIL) SYMBOL A1 0 0.02 0.05 0 0.79 1.97 A3 0.25 REF 9.84 REF D 5.00 BSC 196.85 BSC E 5.00 BSC 196.85 BSC e 0.50 BSC 19.69 BSC y 0.10 3.94 Note: 1.DIMENSIONING AND TOLERANCING CONFORM TO ASME Y145.5M-1994. 2. REFER TO JEDEC STD. MO-220 WHHD-2 ISSUE A 161616169 999 17171717 24242424 25252525 32 323232 1111 8888 BOTTOM VIEW D2D e b eL E SEATING PLANE A yyyy CCCC

0.100.100.100.10 CCCC

0.100.100.100.10 M CCCCAAAABBBB

0.250.250.250.25 CCCC

DM134B、、、、DM135B 點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 16-Bit Constant Current LED Drivers-18- Version：：：：A.001 Preliminary 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.