CAT4016 16-Channel Constant Current LED Driver FEATURES DESCRIPTION 16 Constant current-sink channels 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 0.4V (for 2 to 100mA LED current) allows for more power efficient designs. Serial interface up to 25MHz clock frequency 3V to 5.5V logic supply LED current range from 2mA to 100mA LED current set by external RSET resistor 300mV LED dropout at 30mA Thermal shutdown protection A high-speed 4-wire serial interface of up to 25MHz 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. Available in RoHS-compliant 24-lead SOIC, TSSOP, QSOP, and 4 x 4mm TQFN packages APPLICATION Billboard Display Marquee Display Instrument Display General Purpose Display Thermal shutdown protection is incorporated in the device to disable the LED outputs if the die temperature exceeds a set limit. For Ordering Information details, see page 14. The device is available in the 24-lead SOIC, TSSOP, QSOP and the compact TQFN 4 x 4mm packages. TYPICAL APPLICATION CIRCUIT VIN 3V to 5.5V VDD CONTROLLER 20mA 1µF LED1 LED2 LED16 BLANK LATCH CAT4016 SOUT to next device SIN RSET CLK GND © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 3kΩ 1 Doc. No. MD-5028 Rev. C CAT4016 ORDERING INFORMATION Part Number Package Quantity per Reel Package Marking 1,000 CAT4016W (1) CAT4016W-T1 SOIC24 (1) CAT4016Y-T2 TSSOP24 CAT4016VS-T2 2,000 CAT4016Y (1) 2,000 4016VS (1) 2,000 4016VSR (1) 2,000 LAAA (2) 2,000 LAAD QSOP24 CAT4016VSR-T2 QSOP24 CAT4016HV6-T2 TQFN24 CAT4016HV6-GT2 TQFN24 Notes: (1) Matte-Tin Plated Finish (RoHS-compliant) (2) NiPdAu Plated Finish (RoHS-compliant) PIN CONFIGURATION 24-Lead SOIC (W), TSSOP (Y), QSOP (VS) 24-Lead QSOP (VSR) GND 1 24 VDD LED15 1 24 LED14 SIN 2 23 RSET LED16 2 23 LED13 CLK 3 22 SOUT BLANK 3 22 LED12 LATCH 4 21 BLANK SOUT 4 21 LED11 LED1 5 20 LED16 RSET 5 20 LED10 LED2 6 19 LED15 VDD 6 19 LED9 LED3 7 18 LED14 GND 7 18 LED8 LED4 8 17 LED13 SIN 8 17 LED7 LED5 9 16 LED12 CLK 9 16 LED6 LED6 10 15 LED11 LATCH 10 15 LED5 LED7 11 14 LED10 LED1 11 14 LED4 LED8 12 13 LED9 LED2 12 13 LED3 24-Lead TQFN (HV6) VDD RSET SOUT BLANK LED16 LED15 23 22 21 20 19 GND 1 18 LED14 SIN 2 17 LED13 CLK 3 16 LED12 LATCH 4 15 LED11 LED1 5 14 LED10 LED2 6 13 LED9 9 10 LED4 LED5 LED6 11 12 LED8 8 LED7 7 LED3 Doc. No. MD-5028 Rev. C 24 2 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT4016 ABSOLUTE MAXIMUM RATINGS Parameter VDD Supply Voltage Logic input/output voltage (SIN, SOUT, CLK, BLANK, LATCH) Rating Units 6 -0.3V to VDD+0.3V V V 6 150 -55 to +160 -40 to +150 300 V mA °C °C °C Range Units 3.0 to 5.5 0.4 to 5.5 up to 100 -40 to +85 V V mA °C LEDn voltage DC output current on LED1 to LED16 Storage Temperature Range Junction Temperature Range Lead Soldering Temperature (10sec.) RECOMMENDED OPERATING CONDITIONS Parameter VDD Voltage applied to LED1 to LED16 LED current RSET control range Ambient Temperature Range ELECTRICAL OPERATING CHARACTERISTICS DC Characteristics VDD = 5.0V, TAMB = 25 ºC, over recommended operating conditions unless specified otherwise. Symbol Name ILED-ACC LED Current (any channel) ILED-MAT LED Current Matching (ILED - ILEDAVR) / ILEDAVR ΔIVDD LED current regulation vs. VDD ΔIVLED LED current regulation vs. VLED IDDOFF Supply Current (all outputs off) IDDON Supply Current (all outputs on) ILKG RLATCH RBLANK LEDn output Leakage LATCH Pull-down Resistance BLANK Pull-up Resistance VIH VIL VHYS IIL VOH VOL VRSET TSD THYST Conditions VLED = 1V, RSET = 3kΩ VLED = 1V, RSET = 1.5kΩ VLED = 1V, RSET = 750Ω VLED = 1V, RSET = 3kΩ VLED = 1V, RSET = 1.5kΩ VLED = 1V, RSET = 750Ω VDD within 4.5V and 5.5V LED current 30mA VLED within 1V and 3V LED current 30mA RSET = 3kΩ RSET = 750Ω Min Typ Max Units 18 36 20 40 80 ±1.5 ±1.5 ±2.0 22 44 mA +6.0 % -6.0 RSET = 3kΩ RSET = 750Ω VLED = 5V, outputs off Logic high input voltage Logic low input voltage %/V ±0.05 %/V 3 8.5 8 mA mA 4 9 mA 10 -1 100 100 180 180 mA 1 300 300 µA kΩ kΩ 0.3xVDD V V 0.7xVDD Logic input hysteresis voltage 0.1xVDD Logic Input leakage current (CLK, SIN) VI = VDD or GND SOUT logic high output voltage SOUT logic low output voltage IOH = -1mA IOL = 1mA RSET Regulated Voltage Thermal Shutdown Thermal Hysteresis © Catalyst Semiconductor, Inc. Characteristics subject to change without notice ±0.1 -5 5 VCC-0.3V 0.3 1.17 3 0 V 1.20 160 20 1.23 µA V V ºC ºC Doc. No. MD-5028 Rev. C CAT4016 Timing Characteristics For 3.0V ≤ VDD ≤ 5.5V, TAMB = 25 ºC, unless specified otherwise. Symbol Name Min(1) Conditions Typ(2) Max(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 = 50Ω to 3.0V 40 200 ns tlf LED fall time (90% to 10%) Pull-up resistor = 50Ω to 3.0V 30 250 ns SIN LATCH LEDn ns SOUT tor SOUT rise time (10% to 90%) CL = 15pF 5 ns tof SOUT fall time (90% to 10%) CL = 15pF 5 ns tod Propagation delay time SOUT CLK to SOUT 8 15 25 ns Test Circuit for AC Characteristics 1µF VDD VDD CONTROLLER LED1 Rp 50Ω Rp 50Ω BLANK LATCH CAT4016 LED16 SIN V1 SOUT CLK RSET GND Cl 3V 15pF RSET Notes: (1) All min and max values are guaranteed by design. (2) VDD = 5V, LED current 30mA. Doc. No. MD-5028 Rev. C 4 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT4016 1/fclk CLK tssu tsh tcwl tcwh SIN tod SOUT tlh tlsu LATCH tlwh Figure 1. Serial Input Timing Diagram tld LATCH tbd BLANK tls LED1 LED2 tlst = 15 tls LED16 Figure 2. LED Output Timing Diagram © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 5 Doc. No. MD-5028 Rev. C CAT4016 TYPICAL PERFORMANCE CHARACTERISTICS VDD = 5.0V, LED current 30mA, all LEDs On, TAMB = 25°C unless otherwise specified. Supply Current vs. VDD Pin Voltage LED Current vs. LED Pin Voltage 6.0 SUPPLY CURRENT [mA] LED CURRENT [mA] 70 60 50 40 30 20 10 0 0.3 0.6 0.9 LED PIN [V] 1.2 4.5 4.0 3.5 All LED's OFF 1.5 3.0 3.5 4.0 4.5 VDD [V] 5.0 5.5 Supply Current vs. RSET Current LED Current vs. VDD Pin Voltage 12 SUPPLY CURRENT [mA] 31.5 31.0 LED CURRENT [mA] 5.0 3.0 0.0 30.5 30.0 29.5 29.0 28.5 All LED's ON 10 8 6 4 All LED's OFF 2 0 3.0 3.5 4.0 4.5 VDD [V] 5.0 5.5 0.0 RSET Voltage vs. VDD Pin Voltage 0.5 1.0 1.5 RSET CURRENT [mA] 2.0 LED Current vs. RSET Resistor 1.30 100 LED CURRENT [mA] RSET PIN [V] All LED's ON 5.5 1.25 1.20 1.15 1.10 80 60 40 20 0 3.0 Doc. No. MD-5028 Rev. C 3.5 4.0 4.5 VDD [V] 5.0 5.5 0.1 6 1.0 10.0 RSET [kΩ] 100.0 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT4016 TYPICAL PERFORMANCE CHARACTERISTICS VDD = 5.0V, LED current 30mA, all LEDs On, TAMB = 25°C unless otherwise specified. LED Current vs. Temperature RSET Voltage vs. Temperature 1.30 31.5 LED CURRENT [mA] 31.0 RSET PIN [V] 1.25 1.20 1.15 30.5 30.0 29.5 29.0 1.10 28.5 -50 0 50 100 TEMPERATURE [°C] 150 -50 150 Internal Pull-Up Current (BLANK pin) Internal Pull-Down Current (LATCH pin) 30 PULL-UP CURRENT [μA] . 30 PULL-DOWN CURRENT [μA] . 0 50 100 TEMPERATURE [°C] 25 20 15 10 5 25 20 15 10 5 0 0 0 1 2 3 4 LATCH VOLTAGE [V] 0 5 1 2 3 4 BLANK VOLTAGE [V] 5 BLANK Transient Response PWM Dimming on BLANK pin (f = 10kHz) 100 DUTY CYCLE [%] 80 60 40 20 0 0 5 10 15 20 25 LED CURRENT [mA] © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 30 7 Doc. No. MD-5028 Rev. C CAT4016 PIN DESCRIPTION Name Function GND Ground SIN Serial data input pin CLK Serial clock input pin LATCH Latch serial data to output registers LED1-LED16 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 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. 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. 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. CLK is the serial clock input. On each rising CLK edge, data is transferred from SIN to the internal 16bit 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. 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 1.2V. 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 0.4V. Doc. No. MD-5028 Rev. C VDD is the positive supply pin voltage for the entire device. A small 1µF ceramic is recommended close to pin. 8 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT4016 BLOCK DIAGRAM LED1 LED2 LED3 LED16 VDD + VIN + CURRENT SINKS Current Setting BLANK RSET 1.2V Ref GND LATCHES LATCH L1 L2 L3 L16 SHIFT REGISTER SIN S1 S2 S3 S16 SOUT CLK Figure 2. 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. 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. 1.2 LED current = 50 × 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 then one device on the same interface. SERIAL INTERFACE 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 0.4V 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. 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. The driver delays the activation of each consecutive LED output channel by 17ns (typical). Relative to LED1, LED2 is delayed by 17ns, LED3 by 34ns and LED16 by 250ns 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. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 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). 9 Doc. No. MD-5028 Rev. C CAT4016 PACKAGE OUTLINE DRAWINGS SOIC 24-Lead 300mils (W)(1) SYMBOL E1 E MIN e PIN#1 IDENTIFICATION MAX A 2.35 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 e b NOM 7.60 1.27 BSC h 0.25 0.75 L 0.40 1.27 θ 0° 8° θ1 5° 15° TOP VIEW h D A2 A A1 SIDE VIEW h θ1 θ θ1 L c END VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MS-013. Doc. No. MD-5028 Rev. C 10 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT4016 TSSOP 24-Lead 4.4mm (Y)(1) b SYMBOL MIN NOM MAX A A1 E1 E 1.20 0.05 0.15 A2 0.80 1.05 b 0.19 0.30 c 0.09 0.20 D 7.70 7.80 7.90 E 6.25 6.40 6.55 E1 4.30 4.40 4.50 e 0.65 BSC L 1.00 REF L1 0.50 θ1 0° 0.60 0.70 8° e TOP VIEW D c A2 A θ1 L1 A1 L SIDE VIEW END VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 11 Doc. No. MD-5028 Rev. C CAT4016 QSOP 24-Lead (VS, VSR)(1) D E1 E SYMBOL MIN A 1.37 A1 0.10 0.25 b 0.20 0.31 c 0.19 0.25 D 8.56 8.74 E 5.82 6.19 E1 3.81 e MAX 1.73 3.98 0.635 BSC h 0.28 L 0.41 L2 ө1 0.48 0.86 0.254 BSC 0º ө2 e NOM 8º 7º BSC b TOP VIEW θ2 h A A1 θ1 c L L2 END VIEW SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-137. Doc. No. MD-5028 Rev. C 12 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT4016 TQFN 24-Pad 4 x 4mm (HV6)(1 A D DETAIL A E E2 PIN#1 ID PIN#1 INDEX AREA D2 A1 TOP VIEW SIDE VIEW BOTTOM VIEW b SYMBOL MIN NOM MAX A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 b DETAIL A 0.18 0.25 D 3.90 4.00 4.10 D2 2.40 – 2.90 E 3.90 4.00 4.10 E2 2.40 – 2.90 L L 0.20 REF e e 0.30 A 0.50 BSC 0.30 0.40 0.50 FRONT VIEW A3 ) For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-220. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 13 Doc. No. MD-5028 Rev. C CAT4016 EXAMPLE OF ORDERING INFORMATION (1) Prefix CAT Device # Suffix 4016 HV6 Product Number 4016 Optional Company ID Package W: SOIC Y: TSSOP VS: QSOP VSR: QSOP(4) HV6: TQFN –G T2 Tape & Reel T: Tape & Reel 1: 1,000/Reel (5) 2: 2,000/Reel Lead Finish Blank: Matte-Tin G: NiPdAu For Product Top Mark Codes, click here: http://www.catsemi.com/techsupport/producttopmark.asp Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The device used in the above example is a CAT4016HV6–GT2 (TQFN, NiPdAu, Tape & Reel, 2,000/Reel). (3) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office. (4) Different pin outs, see page 2. (5) SOIC package availability in 1,000/Reel. All other packages are 2,000/Reel. Doc. No. MD-5028 Rev. C 14 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice REVISION HISTORY Date Rev. Reason 09/26/2008 A Initial Issue 10/17/2008 B 04/09/2008 C Update Absolute Maximum Ratings Update Ordering Information table, added TQFN in NiPdAu plated finish. Update Package Outline Drawings Update Example of Ordering Information Add Top Mark Codes link Copyrights, Trademarks and Patents © Catalyst Semiconductor, Inc. Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: Adaptive Analog™, Beyond Memory™, DPP™, EZDim™, LDD™, MiniPot™, Quad-Mode™ and Quantum Charge Programmable™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete. Catalyst Semiconductor, Inc. Corporate Headquarters 2975 Stender Way Santa Clara, CA 95054 Phone: 408.542.1000 Fax: 408.542.1200 www.catsemi.com Document No: MD-5028 Revision: C Issue date: 04/09/08