ADT6610

ADT6610 ADT6610 Data Sheet * This specifications are subject to be changed without notice Aug. 25. 2011 1/21 http://www.ad-tech.co.kr ADT6610 Revision History Version 0.0 -. First Version Contents Date 2011. 8. 25 * This specifications are subject to be changed without notice Aug. 25. 2011 2/21 http://www.ad-tech.co.kr ADT6610 GENERAL DESCRIPTION The ADT6610 is a 3-channel constant current LED driver that has a wide range of output currents. The ADT6610 controls LED brightness with a Pulse Width Modulation (PWM) scheme that gives the application the capability of displaying a billion colors in an RGB cluster. The maximum current is set by an external resistor. FEATURES 16SOP • Constant output current range : 5mA to 100mA with three external resistors • 3 channel constant current LED sink driver for RGB LED clusters • Two wire only transmission interface - Clock re-generation to recover the clock duty cycle • 8/12/16bit grayscale PWM control • Supply voltage range : 5 ~ 18V • Embedded voltage regulator : VDD generation • Maximum sinking output voltage : 18V • 5V CMOS compatible input • Package : SOP16, SSOP16 • Maximum serial input frequency : 10MHz • Built in internal RC oscillator is 10MHz • RoHS-compliant package 16SSOP APPLICATION • • • • Channel sign Architectural lighting LED curtain display or LED strip Neon sign replacement * This specifications are subject to be changed without notice Aug. 25. 2011 3/21 http://www.ad-tech.co.kr ADT6610 PIN CONFIGURATION DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 DO CKO VCC VDD GND OUTA OUTB OUTC PIN DESCRIPTION PIN NO. 1 2 3 STSEL PIN NAME DI CKI Input terminal for serial data input. Input terminal for serial clock input. Waiting time selection pin for strobe signal. L H 4,5 20us 5ms FUNCTION Input data transfer mode selection. MODE1 L MODE0, MODE1 L H H H L H 12 bit luminance data transfer Reserved 16 bit luminance data transfer MODE0 L descriptions 8 bit luminance data transfer 6,7,8 REXTA, REXTB, REXTC OUTC, OUTB, OUTA GND VDD VCC CKO DO External resistors are connected between those pins and GND for driver current setting. Output terminal for constant current output. GND Regulator output voltage. High supply voltage. Output terminal for serial clock output. Output terminal for serial data output when CKI is ‘L”. 9,10,11 12 13 14 15 16 * This specifications are subject to be changed without notice Aug. 25. 2011 4/21 http://www.ad-tech.co.kr ADT6610 BLOCK DIAGRAM OUTA OUTB OUTC REXTA REXTB REXTC Comparator B Comparator C Comparator A Reference Current PWM Counter Oscillator 16 bit Display Data Register 16 bit Display Data Register 16bit Control Data Register VDD Regulator VCC Strobe Generator 16 16 16 24/36/48 bit Data Register 16 DI 16 16 DO 48 bit Shifter Register CKO CKI Bit Selection GND MODE0 MODE1 * This specifications are subject to be changed without notice Aug. 25. 2011 5/21 http://www.ad-tech.co.kr ADT6610 EQUIVALENT CIRCUIT OF INPUTS AND OUTPUTS CKI, DI terminal VCC DO, CKO,OUTA,OUTB,OUTC terminal VCC CKI DI Internal Signal DO CKO OUTA OUTB OUTC GND REXTA, REXTB, REXTC terminal VDD Reference Current Internal Signal MODE0, MODE1, STSEL terminal VDD REXTA REXTB REXTC MODE0 MODE1 STSEL GND GND * This specifications are subject to be changed without notice Aug. 25. 2011 6/21 http://www.ad-tech.co.kr ADT6610 ABSOLUTE MAXIMUM RATINGS (Ta = 25oC, Note1) PARAMETER Supply Voltage Supply Voltage Output Voltage Output Current per Output Channel Logic Input Voltage GND Terminal Current Max Power Dissipation SYMBOL VCC VDD VOUT IOUT VIN IGND PDMAX (SOP) PDMAX (SSOP) Thermal resistance ΘJA (SOP) ΘJA (SSOP) Operating Temperature Storage Temperature Junction Temperature Topr Tstg TJMAX RATING 0 ~ 20 0~7 -0.5 ~ 20 150 -0.4 ~ VDD+0.4 320 1.53 1.22 81.6 102.3 -40 ~ 85 -65 ~ 150 150 UNIT V V V mA V mA W W ℃/W ℃/W ℃ ℃ ℃ Note1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. ELECTRICAL CHARACTERISTICS DC CHARACTERISTICS (VDD = 5V, R=39kΩ, Ta = 25oC) PARAMETER VCC Supply Voltage LED Driver Output Voltage Voltage Regulator Output Voltage Input Leakage Current Output Leakage Current “H” Level Input Voltage “L” Level IOL=5mA Output Voltage DO, CKO IOH=-5mA LED Driver Output Current Pin to Pin Deviation Chip to Chip Deviation Supply Voltage Regulation Supply Current VDS=1.5V IOUT=60mA IOUT=60mA IOUT=60mA, VCC=10~18V IOUT=60mA, VCC=18V VOH IOUT IPP ICC %/VCC ICC 0.8VDD 60 ±1.5 ±3 ±0.2 4 100 ±3 ±6 ±0.5 8 V mA % % % mA VIL VOL GND 0.2VDD 0.2VDD V V VDS=18V, All turn off VCC=10~18V TEST CONDITION SYMBOL VCC VOUT VDD Iz Ioz VIH 0.8VDD 4.5 -1.0 5.0 MIN. 10 TYP. 15 MAX. 18 18 5.5 1.0 1.0 VDD UNIT V V V uA uA V * This specifications are subject to be changed without notice Aug. 25. 2011 7/21 http://www.ad-tech.co.kr ADT6610 TEST CIRCUIT for DC CHARACTERISTICS ICC VCC CKI OUTA OUTB IIH, VIH IIL, VIL DI STSEL MODE0 MODE1 REXTA REXTB REXTC R R R IOUT ADT6610 OUTC CKO IOL/IOH DO VDD C GND * This specifications are subject to be changed without notice Aug. 25. 2011 8/21 http://www.ad-tech.co.kr ADT6610 ELECTRICAL CHARACTERISTICS ( Continued ) AC CHARACTERISTICS (VDD = 5V, Ta = 25oC) PARAMETER Propagation Delay Time CKI Frequency CKI Pulse Width Data Setup Time Data Hold Time DI Width Clock Delay Clock Width Clock Cycle Maximum Clock Rise Time Maximum Clock Fall Time CKO, DO Output Rise Time CKO, DO Output Fall Time CKI Waiting Time for No Strobe STSEL=Low CKI Waiting Time for No Strobe STSEL=High CKI Waiting Time for Strobe STSEL=Low CKI Waiting Time for Strobe STSEL=High CKO VCC = 15V VDD = 5.0V VIH = VDD - 0.5 VIL = 0.5V R = 39㏀ ( IOUT = 60㎃ ) CL = 10pF RL = 200Ω VDS = 1.5V CKI-DO TEST CONDITION SYMBOL tP fCKMAX tWH / tWL tsetup thold twsh twsl tCKD tW tCY tr tf tor tof tst0 tst0 tst1 tst1 20 5 MIN. 0.5 15 20 30 50 50 10 100 TYP. 8 8 8 30 MAX. 20 10 15 10 10 10 10 6 1.5 UNIT ns MHz ns ns ns ns ns ns ns ns ns ns ns ns us ms us ms TEST CIRCUIT for AC CHARACTERISTICS VCC VCC = 15V VCC CKI DI OUTA OUTB RL VDS VDS VDS CL RL CL RL CL Function Generation STSEL MODE0 MODE1 ADT6610 OUTC CKO CL DO CL REXTA REXTB REXTC R R R VDD GND 4.7uF * This specifications are subject to be changed without notice Aug. 25. 2011 9/21 http://www.ad-tech.co.kr ADT6610 TIMING WAVEFORM CKI, DI, DO (Data Transmit) tWL CKI H L 90% 50% 10% tWH 90% 50% 10% 90% 50% 10% H DI L tf tsetup tr thold H DO L 90% 10% tp 90% 50% 10% tof tor CKI, CKO , Internal Strobe tst1 tst0 CKI H 50% L H L Internal Strobe Signal tw 50% 90% 50% 10% tw 90% 50% 10% ͌ CKO tCKD tCY tof tor * This specifications are subject to be changed without notice Aug. 25. 2011 10/21 ͌ http://www.ad-tech.co.kr ADT6610 OPERATION PRINCIPLE Interface The ADT6610 is a two-wire only transmission interface. It is similar to SPI interface (CKI, DI). The display data (DI) transfers at the rising edge of the clock (CKI). And the output data (DO) is out at the falling edge of the clock ( CKI ). CKI DI Value 0 0 1 1 1 0 1 1 Embedded Voltage Regulator The ADT6610 has an embedded voltage regulator to regulate the high input supply voltage to 5V supply voltage for internal . The input voltage range is 10 ~ 18V, which is suitable for 12/16V system. The high supply voltage is connected the VCC, and the output of the regulator is connected to VDD. An external capacitor of 4.7uF should be connected between VDD and ground to stable the output voltage. When the input voltage is 5V, the VCC and VDD pins should be connecting. Setting the Gray Scale The ADT6610 provides three selectable gray scale modes: 16bit gray scale mode, 12bit gray scale mode and 8bit gray scale mode. The 16bit gray scale mode provides 65,536 gray scales for each LED. The 12bit gray scale mode provides 4,096 gray scales for each LED. In addition, the ADT6610 also embedded with an oscillator as the clock of PWM counter to turn on output ports according to the gray scale data sent from the system controller. MODE0 pin 0 0 1 1 MODE1 pin 0 1 0 1 MODE 8bit interface mode 12bit interface mode Inhibit 16bit interface mode Strobe Method The ADT6610 provides two selectable strobe time. It is selected 20us or 5ms by STSEL pin. When the CLK high period is longer than 20us at STSEL low or 5ms at STSEL high, the gray scale data are fetched register by internal strobe signal. STSEL pin 0 1 The CKI wait time for internal strobe signal 20us 5ms * This specifications are subject to be changed without notice Aug. 25. 2011 11/21 http://www.ad-tech.co.kr ADT6610 Strobe Waiting Time CKI Strobe no occurs STSEL=0 : 6us STSEL =1 : 1.5ms Margin period Strobe occurs STSEL =0 : 20us STSEL =1 : 5ms Interface Timing Diagram for 8bit Gray Scale Mode ( MODE0=0 , MODE1 = 0) A(7:0) = C3H, B(7:0) = F8H, C(7:0) = 70H CKI DI DO ST (Internal) 20us at STSEL = 0 5ms at STSEL = 1 11 0 0 0 0 1 1 1 11 1 1 0 0 0 0 1 1 1 0 0 0 0 11 0 0 Interface Timing Diagram for 12bit Gray Scale Mode ( MODE0=1 , MODE1 = 0) A(7:0) = F03H, B(7:0) = FF8H, C(7:0) = 0F8H CKI DI DO ST (Internal) 20us at STSEL = 0 5ms at STSEL = 1 1111 00 0 0 0 0111111 1 1 1 1 1 000 0 0 00 1 11 11 000 111 1 00 Interface Timing Diagram for 16bit Gray Scale Mode ( MODE0=1 , MODE1 = 1) A(7:0) = F80FH, B(7:0) = FFC0H, C(7:0) = 1F80H CKI DI DO ST (Internal) 20us at STSEL = 0 5ms at STSEL = 1 111 1 1000 0 00 011 11 11 11 11 111100 0000 00 0 11 1 11 10000000 11 1 11000 * This specifications are subject to be changed without notice Aug. 25. 2011 12/21 http://www.ad-tech.co.kr ADT6610 CONSTANT OUTPUT CURRENT ( REXT=39k ) The ADT6610 performs excellent current skew. The maximum current variation between channels is less than ±3%, and that between ICs is less than ±6%. 120 110 100 90 22k 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 2.2 2.4 2.6 2.8 3 VDS [V] 27k 30k 33k 39k 47k 56k 75k 120k * This specifications are subject to be changed without notice Aug. 25. 2011 13/21 http://www.ad-tech.co.kr ADT6610 ADJUSTING OUTPUT CURRENT The output current is determined by an external resistor. The relationship between IOUT and REXTA,REXTB, REXTC are follows; IOUT[A] = 2350 / REXT REXT = REXTA, REXTB, REXTC 120 100 80 IOUT [mA] 60 40 20 0 20 40 60 80 100 REXT [kohm] 120 140 160 * This specifications are subject to be changed without notice Aug. 25. 2011 14/21 http://www.ad-tech.co.kr ADT6610 PACKAGE POWER DISSIPATION( PD ) The maximum power dissipation, PDMAX = TJMAX − T A RθJA , decreases as the ambient temperature increases. 1.6 1.4 PDmax (SOP16) PDmax (SSOP16) 1.2 Power Dissipation [W] 1 0.8 Safe Operation Area 0.6 0.4 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature [℃] * This specifications are subject to be changed without notice Aug. 25. 2011 15/21 http://www.ad-tech.co.kr ADT6610 LOAD SUPPLY VOLTAGE( VLED ) The design of VLED should fulfill two targets 1. Less Power consumption and heat. 2. Sufficiently headroom for the LED and driver IC to operate in the constant current region. The power dissipation in the driver is calculated by the equation. PD = VDSA x IOUTA + VDSB x IOUTB + VDSC x IOUTC + VCC x ICC By the spec, the max VCC = 18V, max ICC = 8mA => 144mW. If VDSA = VDSB = VDSC = 1V, IOUTA=IOUTB=IOUTC=20mA. PD is about 204mW. If VDSA,VDSB,VDSC are over 1v then the power dissipation is more than 204mW. This means, If VDSA,VDSB,VDSC drops too much voltage on the driver, it is necessary to set external resistors( RA,RB,RC) to reduce the by VR. VLED • • RB RC VR RA Vf VDSA VDSB VDSC IOUTA IOUTB IOUTC ADT6610 * This specifications are subject to be changed without notice Aug. 25. 2011 16/21 http://www.ad-tech.co.kr ADT6610 TYPICAL APPLICATION 1) 8bit Luminance Data Strobe Time = 20us , VLED = 5V VLED System Controller 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 Memory Strobe Time = 20us , VLED = 15V VLED System Controller 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 Memory C C * This specifications are subject to be changed without notice Aug. 25. 2011 17/21 http://www.ad-tech.co.kr ADT6610 TYPICAL APPLICATION ( Continued ) 2) 12bit Luminance Data Strobe Time = 5ms , VLED = 5V VLED System Controller 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 Memory Strobe Time = 5ms , VLED = 15V VLED System Controller 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 Memory C C * This specifications are subject to be changed without notice Aug. 25. 2011 18/21 http://www.ad-tech.co.kr ADT6610 TYPICAL APPLICATION ( Continued ) 3) 16bit Luminance Data Strobe Time = 20us , VLED = 5V VLED System Controller 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 Memory Strobe Time = 5ms , VLED = 15V VLED System Controller 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 DI CKI STSEL MODE0 MODE1 REXTA REXTB REXTC DO CKO VCC VDD GND OUTA OUTB OUTC 16 15 14 13 12 11 10 9 Memory C C * This specifications are subject to be changed without notice Aug. 25. 2011 19/21 http://www.ad-tech.co.kr ADT6610 PACKAGE OUTLINE DIMENSION SSOP16 Dimenstions In Millimeters Symbol A A1 A2 b c D E E1 e L θ 0.400 0° Min 1.350 0.100 1.350 0.200 0.170 4.700 3.800 5.800 0.635 (BSC) 1.270 8° Max 1.750 0.250 1.550 0.300 0.250 5.100 4.000 6.200 Dimensions In Inches Min 0.053 0.004 0.053 0.008 0.007 0.185 0.150 0.228 0.025 (BSC) 0.016 0° 0.050 8° Max 0.069 0.010 0.061 0.012 0.010 0.200 0.157 0.244 * This specifications are subject to be changed without notice Aug. 25. 2011 20/21 http://www.ad-tech.co.kr ADT6610 SOP16 Dimenstions In Millimeters Symbol A A1 A2 b c D E E1 e L θ 0.400 0° Min 1.350 0.100 1.350 0.330 0.170 9.800 3.800 5.800 1.270 (BSC) 1.270 8° Max 1.750 0.250 1.550 0.510 0.250 10.200 4.000 6.200 Dimensions In Inches Min 0.053 0.004 0.053 0.013 0.007 0.386 0.150 0.228 0.050 (BSC) 0.016 0° 0.050 8° Max 0.069 0.010 0.061 0.020 0.010 0.402 0.157 0.244 * This specifications are subject to be changed without notice Aug. 25. 2011 21/21 http://www.ad-tech.co.kr