CAT4016 16-Channel Constant Current LED Driver Description The CAT4016 is a 16 channel constant current driver for LED billboard and other general display applications. LED channel currents are programmed together via an external RSET resistor. Low output voltage operation on the LED channels as low as 0.4 V (for 2 to 100 mA LED current) allows for more power efficient designs. A high−speed 4−wire serial interface of up to 25 MHz clock frequency controls each individual channel using a shift register and latch configuration. A serial output data pin (SOUT) allows multiple devices to be cascaded and programmed via one serial interface. The device also includes a blanking control pin (BLANK) that can be used to disable all channels independently of the interface. Thermal shutdown protection is incorporated in the device to disable the LED outputs if the die temperature exceeds a set limit. The device is available in the 24−lead SOIC, TSSOP, QSOP and the compact TQFN 4 x 4 mm packages. Features • • • • • • • • • SOIC−24 W SUFFIX CASE 751BK TSSOP−24 Y SUFFIX CASE 948AR QSOP−24 VS, VSR SUFFIX CASE 492AB TQFN−24 HV6 SUFFIX CASE 510AM MARKING DIAGRAMS (Top Views) 16 Constant Current−sink Channels Serial Interface up to 25 MHz Clock Frequency 3 V to 5.5 V Logic Supply LED Current Range from 2 mA to 100 mA LED Current set by External RSET Resistor 300 mV LED Dropout at 30 mA Thermal Shutdown Protection Available in 24−lead SOIC, TSSOP, QSOP, and 4 x 4 mm TQFN Packages These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant Applications • • • • http://onsemi.com SOIC−24 A3B CAT4016WO FYMXXXX OAB CAT4016YO 3YMXXX CAT4016W = CAT4016W−T1 4016VS 3YYWWB CAT4016Y = CAT4016Y−T2 QSOP−24 4016VS = CAT4016VS−T2 LAAA AXXX YMCC Billboard Display Marquee Display Instrument Display General Purpose Display TSSOP−24 LAAA = CAT4016HV6−T2 4016VSR 3YYWWB 4016VSR = CAT4016VSR−T2 TQFN−24 LAAD AXXX YMCC LAAD = CAT4016HV6−GT2 A = Assembly Location 3 = Lead Finish − Matte−Tin B = Product Revision (Fixed as “B”) O = Leave Blank F = Fab Code Y or YY = Production Year (Last 1 or 2 Digits) M = Production Month (1−9, A, B, C) WW = Production Week (01 − 52) CC = Country Code (Last Two Digits) XXX or XXXX = Last 3 or 4 Digits XXX or XXXX = of Assembly Lot Number ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 14 of this data sheet. © Semiconductor Components Industries, LLC, 2010 April, 2010 − Rev. 4 1 Publication Order Number: CAT4016/D CAT4016 1 VDD RSET SOUT BLANK LED16 LED15 LED14 LED13 LED12 LED11 LED10 LED9 LED15 LED16 BLANK SOUT RSET VDD GND SIN CLK LATCH LED1 LED2 24−Lead SOIC (W), TSSOP (Y), QSOP (VS) 1 LED14 LED13 LED12 LED11 LED10 LED9 LED8 LED7 LED6 LED5 LED4 LED3 1 GND SIN CLK LATCH LED1 LED2 LED14 LED13 LED12 LED11 LED10 LED9 LED3 LED4 LED5 LED6 LED7 LED8 GND SIN CLK LATCH LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 VDD RSET SOUT BLANK LED16 LED15 PIN CONNECTIONS 24−Lead QSOP (VSR) 24−Lead TQFN (HV6) (Top Views) VIN 3 V to 5.5 V 20 mA 1 mF CONTROLLER VDD LED1 LED2 LED16 BLANK LATCH CAT4016 SIN SOUT to next device RSET CLK GND 3 kW Figure 1. Typical Application Circuit Table 1. ABSOLUTE MAXIMUM RATINGS Parameter Rating Units 6 V −0.3 V to VDD+0.3 V V 6 V 150 mA Storage Temperature Range −55 to +160 _C Junction Temperature Range −40 to +150 _C 300 _C VDD Supply Voltage Logic input/output voltage (SIN, SOUT, CLK, BLANK, LATCH) LEDn voltage DC output current on LED1 to LED16 Lead Soldering Temperature (10 sec.) Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Table 2. RECOMMENDED OPERATING CONDITIONS Parameter Range Units VDD 3.0 to 5.5 V Voltage applied to LED1 to LED16 0.4 to 5.5 V LED current RSET control range up to 100 mA Ambient Temperature Range −40 to +85 _C http://onsemi.com 2 CAT4016 Table 3. ELECTRICAL OPERATING CHARACTERISTICS (VDD = 5.0 V, TAMB = 25°C, over recommended operating conditions unless specified otherwise.) Name Conditions Min Typ Max Units LED Current (any channel) VLED = 1 V, RSET = 3 kW 18 20 22 mA VLED = 1 V, RSET = 1.5 kW 36 40 44 Symbol DC CHARACTERISTICS ILED−ACC ILED−MAT LED Current Matching (ILED − ILEDAVR) / ILEDAVR VLED = 1 V, RSET = 750 W 80 VLED = 1 V, RSET = 3 kW ±1.5 VLED = 1 V, RSET = 1.5 kW −6.0 ±1.5 % +6.0 VLED = 1 V, RSET = 750 W ±2.0 ΔIVDD LED current regulation vs. VDD VDD within 4.5 V and 5.5 V LED current 30 mA ±0.1 %/V ΔIVLED LED current regulation vs. VLED VLED within 1 V and 3 V LED current 30 mA ±0.05 %/V IDDOFF Supply Current (all outputs off) RSET = 3 kW 3 RSET = 750 W 8.5 IDDON Supply Current (all outputs on) RSET = 3 kW 4 RSET = 750 W 10 VLED = 5 V, outputs off −1 8 mA 9 mA 1 mA ILKG LEDn output Leakage RLATCH LATCH Pull−down Resistance 100 180 300 kW RBLANK BLANK Pull−up Resistance 100 180 300 kW VIH VIL Logic high input voltage Logic low input voltage 0.7xVDD VHYS Logic input hysteresis voltage IIL Logic Input leakage current (CLK, SIN) VI = VDD or GND −5 VOH VOL SOUT logic high output voltage SOUT logic low output voltage IOH = −1 mA IOL = 1 mA VCC−0.3 V VRSET RSET Regulated Voltage TSD Thermal Shutdown 160 °C THYST Thermal Hysteresis 20 °C V 0.3xVDD 0.1xVDD 3 5 mA V 0.3 1.17 http://onsemi.com 0 V 1.20 1.23 V CAT4016 Table 4. TIMING CHARACTERISTICS (For 3.0 V ≤ VDD ≤ 5.5 V, TAMB = 25°C, unless specified otherwise.) Name Symbol Min (Note 1) Conditions Typ (Note 2) Max (Note 1) Units 25 MHz CLK fclk CLK Clock Frequency tcwh CLK Pulse Width High 20 ns tcwl CLK Pulse Width Low 20 ns tssu Setup time SIN to CLK 4 ns tsh Hold time SIN to CLK 4 ns tlwh LATCH Pulse width 20 ns Tlh Hold time LATCH to CLK 4 ns Tlsu Setup time LATCH to CLK Channel Stagger Delay 800 ns tld LED1 Propagation delay LATCH to LED1 off/on 40 300 ns tls LED Propagation delay stagger LED(n) to LED(n+1) 17 40 ns tlst LED Propagation delay stagger total LED1 to LED16 250 tbd BLANK Propagation delay BLANK to LED(n) off/on 60 300 ns tlr LED rise time (10% to 90%) Pull−up resistor = 50 W to 3.0 V 40 200 ns tlf LED fall time (90% to 10%) Pull−up resistor = 50 W to 3.0 V 30 250 ns tor SOUT rise time (10% to 90%) CL = 15 pF 5 ns tof SOUT fall time (90% to 10%) CL = 15 pF 5 ns tod Propagation delay time SOUT CLK to SOUT SIN LATCH LEDn ns SOUT 8 15 1. All min and max values are guaranteed by design. 2. VDD = 5 V, LED current 30 mA. 1 mF VDD VDD CONTROLLER LED1 Rp 50 W Rp 50 W BLANK LATCH CAT4016 LED16 SIN CLK SOUT RSET GND V1 Cl 15 pF RSET Figure 2. Test Circuit for AC Characteristics http://onsemi.com 4 3V 25 ns CAT4016 1/fclk CLK tssu tsh tcwl tcwh SIN tod SOUT tlh tlsu LATCH tlwh Figure 3. Serial Input Timing Diagram tld LATCH tbd BLANK tls LED1 LED2 tlst = 15 tls LED16 Figure 4. LED Output Timing Diagram http://onsemi.com 5 CAT4016 TYPICAL PERFORMANCE CHARACTERISTICS 70 6.0 60 5.5 SUPPLY CURRENT (mA) LED CURRENT (mA) (VDD = 5.0 V, LED current 30 mA, all LEDs On, TAMB = 25°C unless otherwise specified.) 50 40 30 20 10 0 0.3 0.6 0.9 1.2 3.5 4.0 4.5 5.0 5.5 Figure 6. Supply Current vs. VDD Pin Voltage 31.0 10 30.5 30.0 29.5 3.5 4.0 4.5 5.0 8 ALL LED’s ON 6 ALL LED’s OFF 4 2 0 5.5 0 0.5 1.0 1.5 VDD (V) RSET CURRENT (mA) Figure 7. LED Current vs. VDD Pin Voltage Figure 8. Supply Current vs. RSET Current 2.0 100 1.30 80 LED CURRENT (mA) 1.25 1.20 1.15 1.10 3.5 Figure 5. LED Current vs. LED Pin Voltage 12 3.0 3.0 VDD (V) 31.5 28.5 ALL LED’s OFF 4.0 LED PIN (V) 29.0 RSET PIN (V) 4.5 3.0 1.5 SUPPLY CURRENT (mA) LED CURRENT (mA) 0 ALL LED’s ON 5.0 60 40 20 3.0 3.5 4.0 4.5 5.0 0 5.5 0.1 1 10 VDD (V) RSET (kW) Figure 9. RSET Voltage vs. VDD Pin Voltage Figure 10. LED Current vs. RSET Resistor http://onsemi.com 6 100 CAT4016 TYPICAL PERFORMANCE CHARACTERISTICS (VDD = 5.0 V, LED current 30 mA, all LEDs On, TAMB = 25°C unless otherwise specified.) 1.30 31.5 31.0 LED CURRENT (mA) RSET PIN (V) 1.25 1.20 1.15 30.5 30.0 29.5 29.0 0 50 100 28.5 −50 150 50 100 150 TEMPERATURE (°C) Figure 11. RSET Voltage vs. Temperature Figure 12. LED Current vs. Temperature 30 30 25 25 20 15 10 5 0 0 TEMPERATURE (°C) PULL−UP CURRENT (mA) PULL−DOWN CURRENT (mA) 1.10 −50 0 1 2 3 4 20 15 10 5 0 5 0 1 2 3 4 LATCH VOLTAGE (V) BLANK VOLTAGE (V) Figure 13. Internal Pull−Down Current (LATCH Pin) Figure 14. Internal Pull−Up Current (BLANK Pin) 100 DUTY CYCLE (%) 80 60 40 20 0 0 5 10 15 20 25 30 LED CURRENT (mA) Figure 15. PWM Dimming on BLANK Pin (f = 10 kHz) Figure 16. BLANK Transient Response http://onsemi.com 7 5 CAT4016 Table 5. PIN DESCRIPTION Name Function GND Ground SIN Serial data input pin CLK Serial clock input pin LATCH LED1−LED16 Latch serial data to output registers LED channel 1 to 16 cathode terminals BLANK Enable / disable all channels SOUT Serial data output pin. RSET LED current set pin VDD Positive supply Voltage TAB (TQFN package only) Connect to GND on the PCB Pin Function GND is the ground reference pin for the device. This pin must be connected to the ground plane on the PCB. SIN is the serial data input. Data is loaded into the internal register on each rising edge of CLK. CLK is the serial clock input. On each rising CLK edge, data is transferred from SIN to the internal 16−bit serial shift register. LATCH is the latch data input. On the rising edge of LATCH, data is loaded from the 16−bit serial shift register into the output register latch. On the falling edge, this data is latched in the output register and isolated from the state of the serial shift register. LED1 – LED16 are the LED current sink channels. These pins are connected to the LED cathodes. The current sinks drive the LEDs with a current equal to 50 times RSET pin current. For the LED sink to operate correctly, the voltage on the LED pin must be above 0.4 V. BLANK is the LED channel enable and disable input pin. When low, LEDs are enabled according to the output latch register content. When high, all LEDs are off, while preserving the data in the output latch register. SOUT is the serial data output of the 16−bit serial shift register. This pin is used to cascade several devices on the serial bus. The SOUT pin is then connected to the SIN input of the next device on the serial bus to cascade. RSET is the LED current setting pin. A resistor is connected between this pin and ground. Each LED channel current is set to 50 times the current pulled out of the pin. The RSET pin voltage is regulated to 1.2 V. VDD is the positive supply pin voltage for the entire device. A small 1 mF ceramic is recommended close to pin. http://onsemi.com 8 CAT4016 Block Diagram LED1 LED2 LED3 VDD + VIN LED16 + CURRENT SINKS Current Setting BLANK RSET 1.2 V Ref GND LATCH SIN L1 S1 L2 S2 LATCHES L3 S3 SHIFT REGISTER L16 S16 SOUT CLK Figure 17. CAT4016 Functional Block Diagram Basic Operation The CAT4016 uses 16 tightly matched current sinks to accurately regulate the LED current in each channel. The external resistor, RSET, is used to set the LED channel current to 50 times the current in RSET. LED current + 50 Pull−up and pull−down resistors are internally provided to set the state of the BLANK and LATCH pins to the off−state when not externally driven. Serial Interface 1.2 R SET A high−speed serial 4−wire interface is provided to program the state of each LED on or off. The interface contains a 16−bit serial to parallel shift register (S1−S16) and a 16−bit latch (L1−L16). Programming the serial to parallel register is accomplished via SIN and CLK input pins. On each rising edge of the CLK signal, the data from SIN is moved through the shift register serially. Data is also moved out of SOUT which can be connected to a next device if programming more than one device on the same interface. On the rising edge of LATCH, the data contents of the serial to parallel shift register is reflected in the latches. On the falling edge of LATCH, the state of the serial to parallel register at that particular time is saved in the latches and does not change irrespective of the contents of the serial to parallel register. BLANK is used to disable all LEDs (turn off) simultaneously while maintaining the same data in the latch register. When low, the LED outputs reflect the data in the latches. When high, all outputs are high impedance (zero current). Tight current regulation for all channels is possible over a wide range of input and LED voltages due to independent current sensing circuitry on each channel. The LED channels have a maximum dropout of 0.4 V for most current and supply voltage conditions. This helps improve the heat dissipation and efficiency of the LED driver. Upon power−up, an under−voltage lockout circuit clears all latches and shift registers and sets all outputs to off. Once the under−voltage lockout threshold has been reached the device can be programmed. The driver delays the activation of each consecutive LED output channel by 17 ns (typical). Relative to LED1, LED2 is delayed by 17 ns, LED3 by 34 ns and LED16 by 250 ns typical. The delay is introduced when LATCH is activated. The delay minimizes the inrush current on the LED supply by staggering the turn on and off current spikes over a period of time and therefore allowing usage of smaller bypass capacitors. http://onsemi.com 9 CAT4016 PACKAGE DIMENSIONS SOIC−24, 300 mils CASE 751BK−01 ISSUE O E1 SYMBOL MIN A 2.35 E e PIN#1 IDENTIFICATION MAX 2.65 A1 0.10 0.30 A2 2.05 2.55 b 0.31 0.51 c 0.20 0.33 D 15.20 15.40 E 10.11 10.51 E1 7.34 7.60 1.27 BSC e b NOM h 0.25 0.75 L 0.40 1.27 θ 0º 8º θ1 5º 15º TOP VIEW h D A2 A A1 SIDE VIEW h q1 q q1 L END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MS-013. http://onsemi.com 10 c CAT4016 PACKAGE DIMENSIONS TSSOP24, 4.4x7.8 CASE 948AR−01 ISSUE A b SYMBOL MIN NOM A E1 E MAX 1.20 A1 0.05 0.15 A2 0.80 1.05 b 0.19 0.30 c 0.09 D 7.70 7.80 7.90 E 6.25 6.40 6.55 E1 4.30 4.40 4.50 e L 0.65 BSC 0.50 L1 θ 0.20 0.60 0.70 1.00 REF 0º 8º e TOP VIEW D c A2 A θ1 L A1 SIDE VIEW END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. http://onsemi.com 11 L1 CAT4016 PACKAGE DIMENSIONS QSOP−24, 150 mils CASE 492AB−01 ISSUE O D SYMBOL MIN A 1.37 1.73 A1 0.10 0.25 b 0.20 0.30 E1 E MAX c 0.19 0.25 D 8.56 8.74 E 5.82 6.19 E1 3.81 3.98 0.635 BSC e h 0.28 L 0.41 L2 θ1 θ2 e NOM b 0.48 0.86 0.254 BSC 0º 8º 7º BSC TOP VIEW q2 h A A1 q1 c L L2 END VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-137. http://onsemi.com 12 CAT4016 PACKAGE DIMENSIONS TQFN24, 4x4 AR CASE 510AM−01 ISSUE O A D DETAIL A E E2 PIN#1 ID PIN#1 INDEX AREA TOP VIEW SIDE VIEW SYMBOL MIN NOM MAX A 0.70 0.75 0.80 A1 0.00 − 0.05 A3 b 0.20 0.25 − e L 0.30 DETAIL A 2.90 4.00 BSC 2.40 e L b 4.00 BSC 2.40 E E2 BOTTOM VIEW 0.20 REF D D2 D2 A1 − 2.90 0.50 BSC 0.30 − 0.50 A Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC MO-220. (3) Minimum space between leads and flag cannot be smaller than 0.15 mm. http://onsemi.com 13 FRONT VIEW A3 CAT4016 Example of Ordering Information (Note 4) Prefix Device # Suffix CAT 4016 HV6 −G T2 Company ID (Optional) Product Number 4016 Package W: SOIC Y: TSSOP VS: QSOP VSR: QSOP (Note 6) HV6: TQFN Lead Finish G: NiPdAu Blank: Matte−Tin Tape & Reel (Note 10) T: Tape & Reel 1: 1,000 / Reel (Note 7) 2: 2,000 / Reel Table 6. ORDERING INFORMATION Part Number Package Quantity per Reel Package Marking CAT4016W-T1 SOIC24 (Note 8) 1,000 CAT4016W CAT4016Y-T2 TSSOP24 (Note 8) 2,000 CAT4016Y CAT4016VS-T2 QSOP24 (Note 8) 2,000 4016VS CAT4016VSR-T2 QSOP24 (Note 8) 2,000 4016VSR CAT4016HV6-T2 TQFN24 (Note 8) 2,000 LAAA CAT4016HV6-GT2 TQFN24 (Note 9) 2,000 LAAD 3. All packages are RoHS−compliant (Lead−free, Halogen−free). 4. The device used in the above example is a CAT4016HV6−GT2 (TQFN, NiPdAu, Tape & Reel, 2,000/Reel). 5. For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. 6. Different pin outs, see page 2. 7. SOIC package availability in 1,000/Reel. All other packages are 2,000/Reel. 8. Matte−Tin Plated Finish (RoHS−compliant). 9. NiPdAu Plated Finish (RoHS−compliant). 10. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: [email protected] N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 14 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative CAT4016/D