DM13A Version : A.006 Issue Date : 2014/03/25 File Name : SP-DM13A-A.006.doc Total Pages : 21 16-bit Constant Current LED Driver 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 DM13A DM13A 16-bit Constant Current LED Driver General Description DM13A is a constant-current sink driver specifically designed for LED display applications. The device incorporates shift registers, data latches, and constant current circuitry on the silicon CMOS chip. The maximum output current value of all 16 channels is adjustable by a single external resistor. Features z Constant-current outputs: 3mA to 60mA adjustable by one external resistor z Maximum output voltage: 17V z Maximum clock frequency: 25MHz z Power supply voltage: 3.3V to 5V z In-rush current control z Bit-to-bit skew : ± 3 % z Package and pin assignment compatible to conventional LED drivers (ST2221C, DM134/5/6) Chip-to-chip skew : ± 6 % Applications z Indoor/Outdoor LED Video Display z LED Variable Message Signs (VMS) System Package Types z DIP24, SOP24, SOP24B, SSOP24, QFN24 16-bit Constant Current LED Driver Version:A.006 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. Page 1 DM13A Block Diagram 16-bit Constant Current LED Driver Version:A.006 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. Page 2 DM13A Pin Connection QFN24 GND 1 24 VDD 23 REXT DAI 2 DCK 3 LAT 4 OUT0 5 OUT1 6 OUT2 7 OUT3 8 OUT4 9 OUT5 10 15 OUT10 OUT6 11 14 OUT9 OUT7 12 13 OUT8 DIP24 SOP24 SSOP24 TSSOP24 (top view) 22 DAO 21 EN 20 OUT15 19 OUT14 18 OUT13 17 OUT12 16 OUT11 Pin Description PIN No. PIN NAME FUNCTION DIP24/SOP24/SSOP24:1 QFN24:23,thermal pad GND Ground terminal. DIP24/SOP24/SSOP24: 2 QFN24:24 DAI Serial data input terminal. DIP24/SOP24/SSOP24: 3 QFN24:1 DCK Synchronous clock input terminal for serial data transfer. Data is sampled at the rising edge of DCK. DIP24/SOP24/SSOP24: 4 QFN24:2 LAT Input terminal of data strobe. Data on shift register goes through at the high level of LAT (level trigger). Otherwise, data is latched. DIP24/SOP24/SSOP24: 5~20 QFN24:3~18 OUT0~15 Sink constant-current outputs (open-drain). Output enable terminal: ‘H’ for all outputs are turned off , ‘L’ for all outputs are active. DIP24/SOP24/SSOP24: 21 QFN24:19 EN DIP24/SOP24/SSOP24: 22 QFN24:20 DAO Serial data output terminal. DIP24/SOP24/SSOP24: 23 QFN24:21 REXT External resistors connected between REXT and GND for output current value setting. DIP24/SOP24/SSOP24: 24 QFN24:22 VDD Supply voltage terminal. 16-bit Constant Current LED Driver Version:A.006 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. Page 3 DM13A Equivalent Circuit of Inputs and Outputs 1. DCK, DAI, LAT, EN terminals 2. DAO terminals Maximum Ratings*1(Ta=25°C, Tj(max) = 150°C) CHARACTERISTIC Supply Voltage Input Voltage SYMBOL RATING UNIT VDD -0.3 ~ 7.0 V VIN -0.3 ~ VDD+0.3 V Output Current IOUT 70 mA Output Voltage VOUT -0.3 ~ 17 V Input Clock Frequency FDCK 25 MHz GND Terminal Current IGND 1500 mA 1.90 ( PDIP24 : Ta=25°C) Power Dissipation (4 layer PCB) PD 1.20 ( SOP24 : Ta=25°C) TBD( SOP24B : Ta=25°C) W 1.05 ( SSOP24 : Ta=25°C) 50.0 (PDIP24 ) Thermal Resistance Rth(j-a) TBD ( SOP24B) 79.2 (SOP24 ) °C/W 90.2 (SSOP24 ) Operating Temperature Top -40 ~ 85 °C Storage Temperature Tstg -55 ~ 150 °C 16-bit Constant Current LED Driver Version:A.006 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. Page 4 DM13A Recommended Operating Condition CHARACTERISTIC Supply Voltage SYMBOL CONDITION MIN. TYP. MAX. UNIT VDD ⎯ 3.3 5.0 5.5 V 1.0 ⎯ 0.5VDD ⎯ ⎯ 17 *2 Output Voltage VOUT Driver On Output Voltage VOUT Driver Off IO OUTn 3 ⎯ 60 Output Current IOH VOH = VDD – 0.2 V ⎯ ⎯ +1.2 IOL VOL = 0.2 V Input Voltage ⎯ ⎯ -1.4 0.8VDD ⎯ VDD 0.0 ⎯ 0.2VDD ⎯ ⎯ 25 15 ⎯ ⎯ tw DCK 15 ⎯ ⎯ tsetup(D) 10 ⎯ ⎯ VIH VIL Input Clock Frequency FDCK LAT Pulse Width tw LAT DCK Pulse Width Set-up Time for DAI *3 VDD = 3.3 V ~ 5.5V Single Chip Operation VDD = 5.0V Hold Time for DAI thold(D) 10 ⎯ ⎯ Set-up Time for LAT tsetup(L) 10 ⎯ ⎯ Hold Time for LAT thold(L) 10 ⎯ ⎯ LAT Pulse Width tw LAT 15 ⎯ ⎯ DCK Pulse Width tw DCK 15 ⎯ ⎯ 12 ⎯ ⎯ 8 ⎯ ⎯ Set-up Time for DAI tsetup(D) Hold Time for DAI thold(D) Set-up Time for LAT tsetup(L) 8 ⎯ ⎯ Hold Time for LAT thold(L) 12 ⎯ ⎯ VDD = 3.3V V mA V MHz ns *1 Stress beyond those listed under “Maximum Ratings” may cause permanent damage to the device. These are stress ratings only; it’s not implied functional operation condition. Exposure to “Maximum Ratings” conditions for extended periods may affect device reliability and life time. *2 Notice that the power dissipation is limited to its package and ambient temperature. *3 The driver output voltage including any overshoot stress has to be compliant with the maximum voltage (17V). 16-bit Constant Current LED Driver Version:A.006 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. Page 5 DM13A Electrical Characteristics (VDD = 5.0 V, Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. Input Voltage “H” Level VIH CMOS logic level 0.8VDD ⎯ VDD Input Voltage “L” Level VIL CMOS logics2 level GND ⎯ 0.2VDD Output Leakage Current IOL VOH = 17 V ⎯ ⎯ ±1.0 VOL IOL = 1.5 mA ⎯ ⎯ 0.2 VOH IOH= 1.4 mA VDD-0.2 ⎯ ⎯ ⎯ ⎯ ±3 % ⎯ ⎯ ±6 % Rrext = 2.2KΩ VOUT = 1 V ~ 3 V ⎯ ±0.1 ±0.5 % / VDD Rrext = 2.2 KΩ ⎯ ±1 ±4 IDD(off) power on all pins are open unless VDD and GND ⎯ 3 4 IDD(off) input signal is static Rrext = 2.9 KΩ all outputs turn off ⎯ 5 6 IDD(on) input signal is static Rrext = 2.9 KΩ all outputs turn on ⎯ 5 6 IDD(off) input signal is static Rrext = 1.05K Ω all outputs turn off ⎯ 9 10 IDD(on) input signal is static Rrext = 1.05K Ω all outputs turn on ⎯ 9 10 Output Voltage (DAO) Output Current Skew (Channel-to-Channel) *1 Output Current Skew (Chip-to-Chip) *2 Output Voltage Regulation Supply Voltage Regulation Supply Current *3 IOL1 UNIT V uA V VOUT = 1.0 V Rrext = 2.2KΩ IOL2 % / VOUT %/V 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. 16-bit Constant Current LED Driver Version:A.006 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. Page 6 DM13A Switching Characteristics (VDD = 5.0V, Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. 32 48 58 37 49 59 9 13 17 VIH = VDD 8 20 30 VIL = GND 8 20 30 Rrext = 2.2KΩ 10 14 18 24 34 44 6 13 23 EN-to-OUT0 Propagation Delay tpLH LAT-to-OUT0 (‘L’ to ‘H’) DCK-to-DAO EN-to-OUT0 Propagation Delay LAT-to-OUT0 (‘H’ to ‘L’) tpHL DCK-to-DAO Output Current Rise Time tor VL = 5.0 V Output Current Fall Time tof CL *1 = 13 pF Data Output Rise Time tdor 14 18 22 Data Output Fall Time tdof 12 16 20 Output Delay Time (OUT(n)-to-OUT(n+1)) tod 2 5 8 UNIT ns Switching Characteristics (VDD = 3.3V, Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL MIN. TYP. MAX. 39 51 61 42 54 64 10 14 18 VIH = VDD 11 23 33 VIL = GND 11 23 33 Rrext = 2.2KΩ 12 16 20 31 41 51 10 17 27 EN-to-OUT0 Propagation Delay LAT-to-OUT0 (‘L’ to ‘H’) tpLH DCK-to-DAO EN-to-OUT0 Propagation Delay LAT-to-OUT0 (‘H’ to ‘L’) *1 CONDITION tpHL DCK-to-DAO Output Current Rise Time tor VL = 5.0 V Output Current Fall Time tof CL *1 = 13 pF Data Output Rise Time tdor 18 24 30 Data Output Fall Time tdof 13 19 25 Output Delay Time (OUT(n)-to-OUT(n+1)) tod 5 10 15 UNIT ns CL means the probe capacitance of oscilloscope. 16-bit Constant Current LED Driver Version:A.006 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. Page 7 DM13A Timing Diagram 1. DCK-DAI, DAO 2. DCK-LAT 16-bit Constant Current LED Driver Version:A.006 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. Page 8 DM13A 3. LAT-OUT0 4. EN-OUT0 5. OUTn+1-OUTn 16-bit Constant Current LED Driver Version:A.006 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. Page 9 DM13A Constant-Current Output Constant-current value of each output channel is set by an external resistor connected between the REXT pin and GND. Varying the resistor value can adjust the current scale ranging from 3mA to 60mA. The reference voltage of REXT terminal (Vrext) is approximately 1.2V. The output current value is calculated roughly by the following equation: Iout(mA) 3 5 10 20 30 40 50 M 55 54.1 50 46.6 45 43.3 41.6 Iout(mA) Output Current as a Function of Rrext value 60 55 50 45 40 35 30 25 20 15 10 5 0 Iout (mA) ~ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Vrext (V) × M Rrext (KΩ) 16 17 18 19 20 21 22 Rext (kΩ) Iout(mA) Output Current as a Function of Output Voltage 60 55 50 45 40 35 30 25 20 15 10 5 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 Vout(V) In order to obtain a good performance of constant-current output, a suitable output voltage is necessary. Users can get related information about the minimum output voltage above. 16-bit Constant Current LED Driver Version:A.006 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. Page 10 DM13A Serial Data Interface The serial-in data (DAI) will be clocked into 16 bit shift register synchronized on the rising edge of the clock (DCK). The data ‘1’ represents the corresponding current output ‘ON’, while the data ‘0’ stands for ‘OFF’. The data will be transferred into the 16 bit latch register when the strobe signal (LAT) is ‘H’ (level trigger); otherwise, the data will be held. The trigger timing of the serial-out data (DAO) will be shifted out on synchronization to the rising edge of the clock. All outputs are turned off while enable terminal (EN) is kept at high level. And they are active when EN shifts to low. 16-bit Constant Current LED Driver Version:A.006 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. Page 11 DM13A Outputs Delay Large in-rush currents will occur when the system activates all the outputs at once. To reduce this effect, DM13A is designed to have a constant unit of delay (around 5ns) between outputs. The delay sequence for every output goes like this: OUT0 (no delay) Æ OUT15 Æ OUT1 Æ OUT14 Æ OUT2 Æ OUT13 Æ OUT3 Æ OUT12 Æ OUT4 Æ OUT11 Æ OUT5 Æ OUT10 Æ OUT6 Æ OUT9 Æ OUT7 Æ OUT8 (the largest delay). Global Brightness Control DM13A has no built-in global brightness control feature. In order to obtain a lower resolution of global brightness control effect, two methods could be utilized. One is providing PWM signal synchronized on latch pulse to modulate the output enable terminal (EN pin). The other is to adjust the Rrext value or voltage drop across the external resistor. Please see the reference circuit below: 16-bit Constant Current LED Driver Version:A.006 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. Page 12 DM13A 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: Tj(junction temperature)(max)(°C)– Ta(ambient temperature)(°C) Pd(max)(Watt) = Rth(junction-to-air thermal resistance)(°C/Watt) The relationship between power dissipation and operating temperature can be refer to the figure below: 3 Tj(max)=150°C PDIP24 2.5 Rth(PDIP24)=50.0°C/Watt Power Dissipation Pd(W) Rth(SOP24)=79.2°C/Watt Rth(SSOP24)=90.2°C/Watt 2 SOP24 1.5 SSOP24 1 0.5 0 0 20 40 60 80 100 120 140 160 Ambient Temperature Ta ( ℃ ) The power consumption of IC can be determined by the following equation and should be less than the maximum allowable power dissipation: 16-bit Constant Current LED Driver Version:A.006 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. Page 13 DM13A Typical Application 16-bit Constant Current LED Driver Version:A.006 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. Page 14 DM13A Package Outline Dimension DIP24 DIMENSIONS IN MM SYMBOLS MIN. TYP. MAX. A - - 5.334 A1 0.381 - - A2 3.175 3.302 3.429 b - 1.524 - b1 - 0.480 - D 31.242 - 32.512 E 7.620 BSC E1 6.426 - 6.680 e - 2.540 - eB 8.500 - 9.525 L 2.921 - 3.810 θ° 0 - 15 16-bit Constant Current LED Driver Version:A.006 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. Page 15 DM13A Package Outline Dimension SSOP24 12 A C A2 1 SEATING PLANE b e 0.004 L1 SYMBOLS MIN. TYP. MAX. A 1.346 1.626 1.753 A1 0.102 0.152 0.254 A2 - - 1.499 b 0.203 - 0.305 C 0.178 - 0.254 D 8.560 8.661 8.738 E 5.791 5.994 6.198 e 3.810 3.912 3.988 L 0.406 0.635 1.270 L1 16-bit Constant Current LED Driver DETAIL A 0.635 BSC E1 θ° L A1 GAUGE PLANE A 13 E 24 E1 D 1.041 BSC 0 - 8 Version:A.006 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. Page 16 DM13A Package Outline Dimension E H SOP24 b e DIMENSIONS IN MM SYMBOLS MIN. TYP. MAX. A - - 2.650 A1 0.100 - 0.300 A2 2.050 - - b 0.310 c 0.200 - 0.330 D 15.240 - 15.700 0.510 E1 7.500BSC e 1.270 BSC E 10.300BSC L1 1.40REF L 0.400 - 1.270 θ° 0 - 8 16-bit Constant Current LED Driver Version:A.006 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. Page 17 DM13A Package Outline Dimension C4 C1 C2 C3 SOP24B DIMENSIONS IN MM SYMBOLS MIN. TYP. MAX. A - - 1.900 A1 0.050 0.100 0.200 A2 1.300 1.500 1.700 b 0.300 0.400 0.500 c 0.100 0.150 0.250 D 12.800 13.000 13.200 E 7.700 8.000 8.300 e 1.000 BSC E1 5.800 6.000 6.200 L 0.250 0.450 0.650 θ° 0 - 10 16-bit Constant Current LED Driver Version:A.006 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. Page 18 DM13A Package Outline Dimension QFN24 DIMENSIONS IN MM SYMBOLS MIN. TYP. MAX. A 0.700 0.750 0.800 A1 0.000 0.020 0.050 A3 0.203 REF b 0.180 0.250 0.300 D 3.900 4.000 4.100 D2 1.900 2.000 2.100 E 3.900 4.000 4.100 E2 1.900 2.000 2.100 e 0.500 BSC L 0.300 0.400 0.500 y - - 0.080 16-bit Constant Current LED Driver Version:A.006 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. Page 19 DM13A 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. Silicon Touch Technology, Inc. reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 16-bit Constant Current LED Driver Version:A.006 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. Page 20