CAT4016

CAT4016 16-Channel Constant Current LED Driver FEATURES 16 Constant current-sink channels 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 Available in RoHS-compliant 24-lead SOIC, TSSOP, QSOP, and 4 x 4mm TQFN packages 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 0.4V (for 2 to 100mA LED current) allows for more power efficient designs. 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. 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 4mm packages. APPLICATION Billboard Display Marquee Display Instrument Display General Purpose Display For Ordering Information details, see page 14. TYPICAL APPLICATION CIRCUIT VIN 3V to 5.5V 1µF VDD LED1 LED2 LED16 20mA CONTROLLER BLANK LATCH SIN RSET CLK GND 3kΩ CAT4016 SOUT to next device © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 1 Doc. No. MD-5028 Rev. C CAT4016 ORDERING INFORMATION Part Number CAT4016W-T1 CAT4016Y-T2 CAT4016VS-T2 CAT4016VSR-T2 CAT4016HV6-T2 CAT4016HV6-GT2 Package SOIC24 (1) (1) Quantity per Reel 1,000 2,000 2,000 2,000 2,000 2,000 Package Marking CAT4016W CAT4016Y 4016VS 4016VSR LAAA LAAD TSSOP24 QSOP24 QSOP24 TQFN24 TQFN24 (1) (1) (1) (2) Notes: (1) Matte-Tin Plated Finish (RoHS-compliant) (2) NiPdAu Plated Finish (RoHS-compliant) PIN CONFIGURATION 24-Lead SOIC (W), TSSOP (Y), QSOP (VS) GND SIN CLK LATCH LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 24-Lead QSOP (VSR) LED15 LED16 BLANK SOUT RSET VDD GND SIN CLK LATCH LED1 LED2 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VDD RSET SOUT BLANK LED16 LED15 LED14 LED13 LED12 LED11 LED10 LED9 LED14 LED13 LED12 LED11 LED10 LED9 LED8 LED7 LED6 LED5 LED4 LED3 24-Lead TQFN (HV6) BLANK LED16 LED15 SOUT RSET 23 24 GND SIN CLK LATCH LED1 LED2 1 2 3 4 5 6 7 VDD LED3 22 21 20 19 18 LED14 17 LED13 16 LED12 15 LED11 14 LED10 13 LED9 8 9 10 11 12 LED7 LED8 LED4 LED5 LED6 Doc. No. MD-5028 Rev. C 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) LEDn voltage DC output current on LED1 to LED16 Storage Temperature Range Junction Temperature Range Lead Soldering Temperature (10sec.) Rating 6 -0.3V to VDD+0.3V 6 150 -55 to +160 -40 to +150 300 Units V V V mA °C °C °C RECOMMENDED OPERATING CONDITIONS Parameter VDD Voltage applied to LED1 to LED16 LED current RSET control range Ambient Temperature Range Range 3.0 to 5.5 0.4 to 5.5 up to 100 -40 to +85 Units V V mA °C ELECTRICAL OPERATING CHARACTERISTICS DC Characteristics VDD = 5.0V, TAMB = 25 ºC, over recommended operating conditions unless specified otherwise. Symbol ILED-ACC Name LED Current (any channel) 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 RSET = 3kΩ RSET = 750Ω VLED = 5V, outputs off Min 18 36 Typ 20 40 80 ±1.5 ±1.5 ±2.0 ±0.1 ±0.05 3 8.5 4 10 Max 22 44 Units mA ILED-MAT ΔIVDD ΔIVLED IDDOFF IDDON ILKG RLATCH RBLANK VIH VIL VHYS IIL VOH VOL VRSET TSD THYST LED Current Matching (ILED - ILEDAVR) / ILEDAVR LED current regulation vs. VDD LED current regulation vs. VLED Supply Current (all outputs off) Supply Current (all outputs on) LEDn output Leakage LATCH Pull-down Resistance BLANK Pull-up Resistance Logic high input voltage Logic low input voltage Logic input hysteresis voltage Logic Input leakage current (CLK, SIN) SOUT logic high output voltage SOUT logic low output voltage RSET Regulated Voltage Thermal Shutdown Thermal Hysteresis -6.0 +6.0 % %/V %/V 8 9 1 300 300 0.3xVDD mA mA mA mA µA kΩ kΩ V V V 5 µA V V ºC ºC -1 100 100 0.7xVDD 180 180 0.1xVDD VI = VDD or GND IOH = -1mA IOL = 1mA -5 VCC-0.3V 0.3 1.17 1.20 160 20 1.23 0 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 3 Doc. No. MD-5028 Rev. C CAT4016 Timing Characteristics For 3.0V ≤ VDD ≤ 5.5V, TAMB = 25 ºC, unless specified otherwise. Symbol CLK fclk tcwh tcwl SIN tssu tsh LATCH tlwh Tlh Tlsu LEDn tld tls tlst tbd tlr tlf SOUT tor tof tod SOUT rise time (10% to 90%) SOUT fall time (90% to 10%) Propagation delay time SOUT CL = 15pF CL = 15pF CLK to SOUT 8 5 5 15 25 ns ns ns LED1 Propagation delay LED Propagation delay stagger LED Propagation delay stagger total BLANK Propagation delay LED rise time (10% to 90%) LED fall time (90% to 10%) LATCH to LED1 off/on LED(n) to LED(n+1) LED1 to LED16 BLANK to LED(n) off/on Pull-up resistor = 50Ω to 3.0V Pull-up resistor = 50Ω to 3.0V 40 17 250 60 40 30 300 200 250 300 40 ns ns ns ns ns ns LATCH Pulse width Hold time LATCH to CLK Setup time LATCH to CLK Channel Stagger Delay 20 4 800 ns ns ns Setup time SIN to CLK Hold time SIN to CLK 4 4 ns ns CLK Clock Frequency CLK Pulse Width High CLK Pulse Width Low 20 20 25 MHz ns ns Name Conditions Min(1) Typ(2) Max(1) Units Test Circuit for AC Characteristics VDD 1µF VDD LED1 Rp 50Ω CONTROLLER BLANK LATCH SIN CLK RSET GND SOUT Cl 15pF RSET V1 3V CAT4016 LED16 Rp 50Ω 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 LATCH tlwh tlsu 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. LED Current vs. LED Pin Voltage 70 LED CURRENT [mA] 60 50 40 30 20 10 0 0.0 0.3 0.6 0.9 LED PIN [V] 1.2 1.5 SUPPLY CURRENT [mA] Supply Current vs. VDD Pin Voltage 6.0 All LED's ON 5.5 5.0 4.5 4.0 3.5 All LED's OFF 3.0 3.0 3.5 4.0 4.5 VDD [V] 5.0 5.5 LED Current vs. VDD Pin Voltage 31.5 Supply Current vs. RSET Current 12 SUPPLY CURRENT [mA] All LED's ON 31.0 LED CURRENT [mA] 30.5 30.0 29.5 29.0 28.5 3.0 3.5 4.0 4.5 VDD [V] 5.0 5.5 10 8 6 4 All LED's OFF 2 0 0.0 0.5 1.0 1.5 RSET CURRENT [mA] 2.0 RSET Voltage vs. VDD Pin Voltage 1.30 LED Current vs. RSET Resistor 100 LED CURRENT [mA] 80 60 40 20 0 RSET PIN [V] 1.25 1.20 1.15 1.10 3.0 3.5 4.0 4.5 VDD [V] 5.0 5.5 0.1 1.0 10.0 RSET [kΩ] 100.0 Doc. No. MD-5028 Rev. C 6 © 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. RSET Voltage vs. Temperature 1.30 LED Current vs. Temperature 31.5 31.0 1.25 RSET PIN [V] LED CURRENT [mA] 30.5 30.0 29.5 29.0 28.5 1.20 1.15 1.10 -50 0 50 100 TEMPERATURE [°C] 150 -50 0 50 100 TEMPERATURE [°C] 150 Internal Pull-Down Current (LATCH pin) 30 PULL-DOWN CURRENT [ μ A] . Internal Pull-Up Current (BLANK pin) 30 PULL-UP CURRENT [μ A] . 25 20 15 10 5 0 25 20 15 10 5 0 0 1 2 3 4 LATCH VOLTAGE [V] 5 0 1 2 3 4 BLANK VOLTAGE [V] 5 PWM Dimming on BLANK pin (f = 10kHz) 100 80 DUTY CYCLE [%] 60 40 20 0 0 5 10 15 20 25 LED CURRENT [mA] 30 BLANK Transient Response © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 7 Doc. No. MD-5028 Rev. C CAT4016 PIN DESCRIPTION Name GND SIN CLK LATCH LED1-LED16 BLANK SOUT RSET VDD TAB (TQFN package only) Function Ground Serial data input pin Serial clock input pin Latch serial data to output registers LED channel 1 to 16 cathode terminals Enable / disable all channels Serial data output pin. LED current set pin Positive supply Voltage 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 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. 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. 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 1.2V. VDD is the positive supply pin voltage for the entire device. A small 1µF ceramic is recommended close to pin. Doc. No. MD-5028 Rev. C 8 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT4016 BLOCK DIAGRAM LED1 LED2 LED3 VDD VIN + LED16 CURRENT SINKS + Current Setting 1.2V Ref GND RSET BLANK LATCHES LATCH L1 L2 L3 L16 SHIFT REGISTER SIN CLK S1 S2 S3 S16 SOUT 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. 1.2 LED current = 50 × R SET 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 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. 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 0.4V 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. 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 9 Doc. No. MD-5028 Rev. C CAT4016 PACKAGE OUTLINE DRAWINGS SOIC 24-Lead 300mils (W)(1) SYMBOL MIN NOM MAX A A1 A2 b E1 E 2.35 0.10 2.05 0.31 0.20 15.20 10.11 7.34 1.27 BSC 0.25 0.40 0° 5° 2.65 0.30 2.55 0.51 0.33 15.40 10.51 7.60 0.75 1.27 8° 15° c D E E1 e h b PIN#1 IDENTIFICATION e L θ θ1 TOP VIEW D h h θ1 A A2 θ θ1 A1 SIDE VIEW L END VIEW c 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 A2 b E1 E 1.20 0.05 0.80 0.19 0.09 7.70 6.25 4.30 7.80 6.40 4.40 0.65 BSC 1.00 REF 0.50 0° 0.60 0.70 8° 0.15 1.05 0.30 0.20 7.90 6.55 4.50 c D E E1 e L L1 θ1 e TOP VIEW D c A2 A θ1 L1 L SIDE VIEW END VIEW A1 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 SYMBOL MIN NOM MAX A A1 b c D E1 E 1.37 0.10 0.20 0.19 8.56 5.82 3.81 0.635 BSC 0.28 0.41 0.254 BSC 0º 7º BSC 1.73 0.25 0.31 0.25 8.74 6.19 3.98 0.48 0.86 8º E E1 e h L L2 ө1 ө2 e TOP VIEW b θ2 h A θ1 L L2 END VIEW A1 SIDE VIEW c 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 D A DETAIL A E E2 PIN#1 ID PIN#1 INDEX AREA TOP VIEW D2 A1 SIDE VIEW BOTTOM VIEW b SYMBOL MIN NOM MAX e L A A1 A3 b D D2 E E2 e L 0.70 0.00 0.18 3.90 2.40 3.90 2.40 0.30 0.75 0.02 0.20 REF 0.25 4.00 – 4.00 – 0.50 BSC 0.40 0.80 0.05 DETAIL A 0.30 4.10 2.90 4.10 2.90 0.50 A3 A FRONT 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-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 # 4016 Suffix HV6 –G T2 Product Number 4016 Optional Company ID Package W: SOIC Y: TSSOP VS: QSOP VSR: QSOP(4) HV6: TQFN 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 09/26/2008 10/17/2008 04/09/2008 Rev. A B C Reason Initial Issue 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