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 Contents Date -. First Version 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 16SSOP • Maximum serial input frequency : 10MHz • Built in internal RC oscillator is 10MHz • RoHS-compliant package 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 1 16 DO CKI 2 15 CKO STSEL 3 14 VCC MODE0 4 13 VDD MODE1 5 12 GND REXTA 6 11 OUTA REXTB 7 10 OUTB REXTC 8 9 OUTC PIN DESCRIPTION PIN NO. PIN NAME 1 DI Input terminal for serial data input. 2 CKI Input terminal for serial clock input. 3 FUNCTION Waiting time selection pin for strobe signal. STSEL 4,5 L 20us H 5ms Input data transfer mode selection. MODE1 MODE0 descriptions L L 8 bit luminance data transfer L H 12 bit luminance data transfer H L Reserved H H 16 bit luminance data transfer MODE0, MODE1 6,7,8 REXTA, REXTB, REXTC External resistors are connected between those pins and GND for driver current setting. 9,10,11 OUTC, OUTB, OUTA Output terminal for constant current output. 12 GND GND 13 VDD Regulator output voltage. 14 VCC High supply voltage. 15 CKO Output terminal for serial clock output. 16 DO Output terminal for serial data output when CKI is ‘L”. * This specifications are subject to be changed without notice Aug. 25. 2011 4/21 http://www.ad-tech.co.kr ADT6610 BLOCK DIAGRAM OUTA OUTC OUTB REXTA REXTB Reference Current REXTC Comparator A Comparator B Comparator C 16bit Control Data Register 16 bit Display Data Register 16 bit Display Data Register PWM Counter Oscillator Strobe Generator 16 16 VDD Regulator VCC 16 24/36/48 bit Data Register 16 16 16 DI DO 48 bit Shifter Register CKI CKO 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 DO, CKO,OUTA,OUTB,OUTC terminal VCC VCC CKI DI Internal Signal DO CKO OUTA OUTB OUTC GND REXTA, REXTB, REXTC terminal MODE0, MODE1, STSEL terminal VDD VDD Reference Current REXTA REXTB REXTC Internal Signal 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 SYMBOL RATING UNIT Supply Voltage VCC 0 ~ 20 V Supply Voltage VDD 0~7 V Output Voltage VOUT -0.5 ~ 20 V Output Current per Output Channel IOUT 150 mA VIN -0.4 ~ VDD+0.4 V GND Terminal Current IGND 320 mA Max Power Dissipation PDMAX (SOP) 1.53 W PDMAX (SSOP) 1.22 W ΘJA (SOP) 81.6 ℃/W ΘJA (SSOP) 102.3 ℃/W Operating Temperature Topr -40 ~ 85 ℃ Storage Temperature Tstg -65 ~ 150 ℃ Junction Temperature TJMAX 150 ℃ Logic Input Voltage Thermal resistance 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 TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT VCC Supply Voltage VCC 10 15 18 V LED Driver Output Voltage VOUT 18 V 5.5 V 1.0 uA 1.0 uA Voltage Regulator Output Voltage VCC=10~18V Input Leakage Current Output Leakage Current VDS=18V, All turn off VDD 4.5 5.0 Iz -1.0 Ioz “H” Level VIH 0.8VDD - VDD V “L” Level VIL GND - 0.2VDD V IOL=5mA VOL - - 0.2VDD V IOH=-5mA VOH 0.8VDD - - V VDS=1.5V IOUT 60 100 mA Pin to Pin Deviation IOUT=60mA IPP ±1.5 ±3 % Chip to Chip Deviation IOUT=60mA ICC ±3 ±6 % IOUT=60mA, VCC=10~18V %/VCC ±0.2 ±0.5 % IOUT=60mA, VCC=18V ICC 4 8 mA Input Voltage Output Voltage DO, CKO LED Driver Output Current Supply Voltage Regulation Supply Current * 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 IIH, VIH DI OUTB IIL, VIL STSEL ADT6610 IOUT OUTC MODE0 CKO MODE1 DO IOL/IOH REXTA REXTB REXTC R R VDD GND C R * 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 SYMBOL MIN. TYP. MAX. UNIT tP - 8 20 ns fCKMAX 0.5 8 10 MHz CKI Pulse Width tWH / tWL 15 - - ns Data Setup Time tsetup 20 - - ns Data Hold Time thold 30 - - ns twsh 50 - - ns twsl 50 - - ns tCKD - 8 15 ns tW 10 30 - ns tCY 100 - - ns tr - - 10 ns tf - - 10 ns tor - - 10 ns tof - - 10 ns Propagation Delay Time TEST CONDITION CKI-DO CKI Frequency DI Width VCC = 15V VDD = 5.0V VIH = VDD - 0.5 VIL = 0.5V R = 39㏀ ( IOUT = 60㎃ ) CL = 10pF RL = 200Ω VDS = 1.5V Clock Delay Clock Width CKO 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 tst0 6 us CKI Waiting Time for No Strobe STSEL=High tst0 1.5 ms CKI Waiting Time for Strobe STSEL=Low tst1 20 us CKI Waiting Time for Strobe STSEL=High tst1 5 ms TEST CIRCUIT for AC CHARACTERISTICS VCC VCC = 15V VCC OUTA CKI CL RL CL RL DI Function Generation RL VDS OUTB ADT6610 STSEL OUTC MODE0 CKO MODE1 DO CL VDS VDS CL 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 H CKI tWH 90% 50% 10% L 10% tr tf H DI tsetup L thold tp 90% H DO 90% 50% 10% 90% 50% 90% 50% 10% L 10% tof tor CKI, CKO , Internal Strobe tst1 ͌ tst0 CKI H 50% L CKO tCKD ͌ tw 50% L Internal Strobe Signal tw H 90% 50% 90% 50% 10% 10% tof tCY 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 MODE1 pin MODE 0 0 8bit interface mode 0 1 12bit interface mode 1 0 Inhibit 1 1 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 The CKI wait time for internal strobe signal 0 20us 1 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 Margin period Strobe occurs STSEL=0 : 6us STSEL =1 : 1.5ms 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 1 1 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 1 1 1 0 0 0 0 DO 1 1 0 0 ST (Internal) 20us at STSEL = 0 5ms at STSEL = 1 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 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 DO 1 1 1 1 0 0 ST (Internal) 20us at STSEL = 0 5ms at STSEL = 1 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 1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 0 DO 1 1 1 1 1 0 0 0 ST (Internal) 20us at STSEL = 0 5ms at STSEL = 1 * 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 IOUT [mA] 22k 80 27k 70 30k 33k 60 39k 50 47k 56k 40 75k 120k 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] * 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 IOUT [mA] 80 60 40 20 0 20 40 60 80 100 120 140 160 REXT [kohm] * 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) Power Dissipation [W] 1.2 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 • • VR Vf RA RB VDSA IOUTA RC VDSB VDSC 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 DO CKO STSEL VCC MODE0 VDD MODE1 GND REXTA OUTA REXTB OUTB REXTC OUTC 16 1 15 2 14 3 STSEL VCC 13 4 MODE0 VDD 12 5 MODE1 GND 11 6 REXTA OUTA 10 7 REXTB OUTB 9 8 REXTC OUTC DI CKI DO CKO 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 DO CKI CKO STSEL VCC MODE0 VDD MODE1 GND REXTA OUTA REXTB OUTB REXTC OUTC 16 1 15 2 14 3 13 4 12 5 11 6 10 7 9 8 DI DO CKI CKO STSEL VCC MODE0 VDD MODE1 GND REXTA OUTA REXTB OUTB REXTC 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 DO CKO STSEL VCC MODE0 VDD MODE1 GND REXTA OUTA REXTB OUTB REXTC OUTC 16 1 15 2 14 3 STSEL VCC 13 4 MODE0 VDD 12 5 MODE1 GND 11 6 REXTA OUTA 10 7 REXTB OUTB 9 8 REXTC OUTC DI CKI DO CKO 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 DO CKI CKO STSEL VCC MODE0 VDD MODE1 GND REXTA OUTA REXTB OUTB REXTC OUTC 16 1 15 2 14 3 13 4 12 5 11 6 10 7 9 8 DI DO CKI CKO STSEL VCC MODE0 VDD MODE1 GND REXTA OUTA REXTB OUTB REXTC 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 DO CKO STSEL VCC MODE0 VDD MODE1 GND REXTA OUTA REXTB OUTB REXTC OUTC 16 1 15 2 14 3 STSEL VCC 13 4 MODE0 VDD 12 5 MODE1 GND 11 6 REXTA OUTA 10 7 REXTB OUTB 9 8 REXTC OUTC DI CKI DO CKO 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 DO CKI CKO STSEL VCC MODE0 VDD MODE1 GND REXTA OUTA REXTB OUTB REXTC OUTC 16 1 15 2 14 3 13 4 12 5 11 6 10 7 9 8 DI DO CKI CKO STSEL VCC MODE0 VDD MODE1 GND REXTA OUTA REXTB OUTB REXTC 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 Dimensions In Inches Min Max Min Max A 1.350 1.750 0.053 0.069 A1 0.100 0.250 0.004 0.010 A2 1.350 1.550 0.053 0.061 b 0.200 0.300 0.008 0.012 c 0.170 0.250 0.007 0.010 D 4.700 5.100 0.185 0.200 E 3.800 4.000 0.150 0.157 E1 5.800 6.200 0.228 0.244 e 0.635 (BSC) 0.025 (BSC) L 0.400 1.270 0.016 0.050 θ 0° 8° 0° 8° * 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 Dimensions In Inches Min Max Min Max A 1.350 1.750 0.053 0.069 A1 0.100 0.250 0.004 0.010 A2 1.350 1.550 0.053 0.061 b 0.330 0.510 0.013 0.020 c 0.170 0.250 0.007 0.010 D 9.800 10.200 0.386 0.402 E 3.800 4.000 0.150 0.157 E1 5.800 6.200 0.228 0.244 e 1.270 (BSC) 0.050 (BSC) L 0.400 1.270 0.016 0.050 θ 0° 8° 0° 8° * This specifications are subject to be changed without notice Aug. 25. 2011 21/21 http://www.ad-tech.co.kr