DD311

DD311 SITI | Alldatasheet

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新竹市展業一路新竹市展業一路新竹市展業一路新竹市展業一路 9999 號號號號 7777 樓之樓之樓之樓之 1111 SILICON TOUCH TECHNOLOGY INC. 9-7F-1, Prosperity Rd I, Science-Based Industrial Park Hsinchu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 DD311 Version : PRE.001 Issue Date : 2004/12/7 File Name : SP-DD311-PRE.001.doc Total Pages : 15 HIGH CONSTANT CURRENT LED DRIVER

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 1 DD311 DD311 HIGH CONSTANT CURRENT LED DRIVER General Description DD311 is a single-channel constant current LED driver, which incorporates current mirror and current switch, designed to drive power LEDs. It can provide a maximum sink current of 1A, adjustable by reference current input. The output current is 100 times the input current value set by an external resistor or bias voltage. The Maximum output voltage of 33V can provide more series power LEDs in a string. The output enable allows dimming control or switching power applications.

Features

/circle6 Maximum output current: 1A (determined by input reference current) /circle6 Minimum output voltage: 1V (Iout = 1A) /circle6 Maximum output voltage: 33V (output leakage current < 0.1uA) /circle6 Maximum output enable frequency: 1MHz /circle6 Excellent output current accuracy

Applications

/circle6 LED architectural or entertainment lighting /circle6 LED general or specialty illumination /circle6 LED backlighting applications Package Types /circle6 TO-252

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 2 DD311 Block Diagram 1 : 100 EN VLEDVbias ILEDIREF OUTREXT GNDVSS Pin Connection 1 2 VSS REXT OUT 3 4 GND EN Pin Description PIN No. PIN NAME FUNCTION 1 REXT Reference current input terminal. 2 OUT Sink constant current outputs (open-drain). 3 GND Ground terminal. 4 VSS Ground terminal. 5 EN Output current enable terminal: VEN = 0V, output current is turned OFF. VEN > 3.3V, output current is turned ON.

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 3 DD311 Maximum Ratings (Ta=25°C, Tj(max) = 125°C) CHARACTERISTIC SYMBOL RATING UNIT Input Reference Current I REF 10 mA Output Current Iout 1.0 A Output Voltage Vout -0.3 ~ 33 Enable Voltage V EN -0.3 ~ 18 V Output Enable Frequency F EN 1 MHz GND Terminal Current I GND 1.01 A Power Dissipation Pd 4.2 (Ta=25°C) W Thermal Resistance (Junction to Air) Rth(j-a) 23.38 Thermal Resistance (Junction to Case) Rth(j-c) 1.77 °C/W Operating Temperature Top -40 ~ 85 Storage Temperature Tstg -55 ~ 150 Recommended Operating Condition CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT force REXT terminal directly   2.7 Bias Voltage Vbias with an external resistor 5  36 V Output Voltage Vout Driver On *1 1   Output Voltage Vout Driver Off *2   33 V Output Current Iout Ven > 3.3V   1 A VEN(IH) 3.3  18 Input Enable Voltage VEN(IL) IREF = 1mA ~ 10mA -0.3  0.0 V Input Enable Frequency F EN Ven > 3.3V DC  1 MHz *1 Notice that the power dissipation is limited to its package and ambient temperature. *2 The driver output voltage including any overshoot stress has to be compliant with the maximum voltage (33V).

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 4 DD311 Electrical Characteristics (Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT Input Enable Voltage “H” Level V EN(IH) 3.3  18 Input Enable Voltage “L” Level V EN(IL) IREF = 1mA ~ 10mA -0.3  0.0 V Output Leakage Current I OL1 Vout = 33 V Ven = 0V   0.1 uA Output Current Skew (Chip-to-Chip)*1 IOL2  TBD TBD % Ambient Temperature Regulation η1  0.01  % / °C Ambient Temperature Regulation η2 IREF = 1mA ~ 10mA Vout = 1.0 V  0.05  mA / °C Output Voltage Regulation % / Vout IREF = 1mA ~ 10mA Vout = 1V ~ 3V  1.5 10 % / V Switching Characteristics (Ta = 25°C unless otherwise noted) CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT Propagation Delay (‘L to ‘H’) EN-to-OUT (Driver On) tpLH  10  Propagation Delay (‘H’ to ‘L’) EN-to-OUT (Driver Off) tpHL  50  Output Current Rise Time tor  25  Output Current Fall Time tof IREF = 10mA (Iout = 1A) VEN(IH) = 5V VEN(IL) = 0V VL = 12V RL = 10 Ω CL = 13 pF  50  ns *1 Chip-to-Chip skew is defined as the range into which any output current of any IC falls.

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 5 DD311 OUT GNDVSS REXT IREF CL RL VL EN CLED Optional C R Optional Switching Characteristics Test Circuit Transient Characteristics In order to reduce the overshoot or undershoot(V out) during switching large current, it is recommended adding a large enough capacitor between V LED and GND to keep LED supply voltage(VLED) stable. The longer rise time and fall time of the EN dimming signal, adjustable by RC filter, produce the smooth transient response of output current. The two output waveforms illustrating the EN dimming signal with and without RC filter are given below: without RC filter with RC filter

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 6 DD311 Constant-Current Output Constant-current value is set by the reference current input. The output current will be 100 times the input current value produced by an external resistor between the REXT pin and the bias voltage or, alternatively, force the low bias voltage to REXT pin. Varying the resistor or the bias voltage value can adjust the current scale ranging up to 1A. Notice that the output current is a little increasing or decreasing until the device temperature and ambient temperature are balance. The output current value is calculated roughly by the following equation: 1 2 3 4 DD311 EN REXTILED VLED Vbias IREF VREXT Output Current as a Function of REXT value 100 200 300 400 500 600 700 800 900 1000 1100 100 1000 10000 100000 REXT (ohm) ILED (mA) Vbias=36V Vbias=24V Vbias=18V Vbias=12V Vbias=5V

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 7 DD311 1 2 3 4 DD311 EN ILED VLED Vbias Output Current as a Function of Vbias 100 200 300 400 500 600 700 800 900 1000 1100 Vbias (volt) ILED (mA) Output Current as a Function of Output Voltage 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Vout (volt) Iout (A) VEN = 5V Vout = 1V Iout = 1A Iout=750m Iout=500m Iout=350m Iout=100m

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 8 DD311 Ambient Temperature vs. Output Current 100 200 300 400 500 600 700 800 900 1000 1100 -60 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (°C) Iout (mA) 1003.5 1004.0 1004.5 1005.0 1005.5 1006.0 1006.5 1007.0 -60 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (°C) Iout (mA) 755 756 757 758 759 760 761 762 -60 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (°C) Iout (mA) 497 498 499 500 501 502 503 504 505 -60 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (°C) Iout (mA) 351 352 353 354 355 356 357 -60 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (°C) Iout (mA) 99.8 100.0 100.2 100.4 100.6 100.8 101.0 101.2 101.4 101.6 101.8 102.0 -60 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (°C) Iout (mA) Iout=1A Iout=750mA Iout=500mA Iout=350mA Iout=100mA Vout = 1V VEN = 12V Vout = 1V VEN = 12V Vout = 1V VEN = 12V Vout = 1V VEN = 12V Vout = 1V VEN = 12V Vout = 1V, VEN = 12V

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 9 DD311 Enable Voltage vs. Output Current 100 200 300 400 500 600 700 800 900 1000 1100 0 2 4 6 8 10 12 14 16 18 20 VEN (volt) Iout (mA) 970 980 990 1000 1010 1020 02468 1 0 1 2 1 4 1 6 1 8 2 0 VEN (volt) Iout (mA) 750 752 754 756 758 760 762 764 02468 1 0 1 2 1 4 1 6 1 8 2 0 VEN (volt) Iout (mA) 505 506 507 508 509 0 2 4 6 8 10 12 14 16 18 20 VEN (volt) Iout (mA) 351.5 352.0 352.5 353.0 353.5 0 2 4 6 8 10 12 14 16 18 20 VEN (volt) Iout (mA) 100.60 100.65 100.70 100.75 100.80 02468 1 0 1 2 1 4 1 6 1 8 2 0 VEN (volt) Iout (mA) Iout=1A Iout=750mA Iout=500mA Iout=350mA Iout=100mA Vout = 1V Ta = 25°C Vout = 1V Ta = 25°C Vout = 1V Ta = 25°C Vout = 1V Ta = 25°C Vout = 1V Ta = 25°C Vout = 1V, Ta = 25°C

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 1 0 DD311 Power Dissipation Notice that 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: 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 20 40 60 80 100 120 140 Ambient Temperature Ta(°C) Power Dissipation Pd(W) Based on the Pd(max), the maximum allowable voltage of output terminal can be calculated as follows: Vout(max)(Volt) = Pd(max)(Watt)–––– VREXT(Volt) × IREF(A) Iout(A) × Dimming Duty Tj(max)=125 °C Rth=23.38 °C/Watt

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 1 1 DD311 Typical Application 1 2 3 4 DD311 EN REXTILED VLED Series String (Suggested) 1 2 3 4 DD311 EN REXT ILED = I1+ I2+ ………… + In VLED Paralleled Strings Optional I1I2In Cross Connected Paralleled Strings 1 2 3 4 DD311 EN Optional REXT VLED Optional I1I2In ILED = I1+ I2+ ………… + In

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 1 2 DD311 Typical Application 1 2 3 4 DD311 REXTILED VLED GND VCC DM413 VCC 1 2 3 4 DD311 REXTILED VCC 1 2 3 4 DD311 REXTILED VCC Pull-High ResistanceDD311 is specifically designed to withstand high frequency switching signal (1Mhz max) while providing high current driving capability. By connecting ENABLE pin to a PWM signal output, system will adapt to precise dimming control. In this display of a typical application, a PWM enabled RGB driver DM413 is configured to act as PWM signal generator. Through serial data input, DM413 can generate maximum of 14 bits RGB PWM grayscale signal to control a set of three DD311. The combination of DD311 and DM413 offers an ideal solution for high end grayscale control and color manipulation.

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 1 3 DD311 Package Outline Dimension TO-252 Unit: inch

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. 新竹市科學園區展業一路 9 號 7 樓之 1 9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 HIGH CONSTANT CURRENT LED DRIVER Version:PRE.001 P a g e 1 4 DD311 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.