TLC x8 BIT LED DRIVER/CONTROLLER

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1 Drive Capability: Segment... ma 16 Bits Common... 6 ma Constant Current Output...3 ma to ma (Current Value Setting for All Channels Using External Resistor) Constant Current Accuracy ±6% (Maximum Error Between Bits) Data Input: Clock Synchronized Serial Input LED Type Applied Cathode Common Logic Power Supply Voltage 4.5 V to 5.5 V LED Power Supply Voltage 4.5 V to 5.5 V Operating Frequency MHz Operating Free-Air Temperature Range 20 C to 85 C 48-Pin SSOL Package description The TLC5920 is an LED driver incorporating a 16-channel shift register, data latch, and constant current circuitry with current value control and 8-channel common driver into a single chip. The constant output current is capable of ma for 16 bits simultaneously, and the current value can be set by one external register. This device also includes a 16-bit segment driver and 8-bit common driver; therefore, the monocolor LED array with 16 8 dots can be driven by only one TLC5920, and a two-color LED array with 16 x 16 dots can be driven by two TLC5920s. COM3 COM2 COM1 COM0 GNDLED NC NC VLED S0 S1 S2 S3 S4 S5 S6 S7 IREF VLED VANA NC GNDANA S8 S9 S DL PACKAGE (TOP VIEW) GNDLED COM4 COM5 COM6 COM7 GNDLED SIN SCLK BLANK CSEL0 GNDLOG CSEL1 CSEL2 VLOG VLED S15 S14 S13 S12 S11 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 2000, Texas Instruments Incorporated POST OFFICE BOX 6553 DALLAS, TEXAS

2 functional block diagram BLANK COM0 CSEL0 CSEL1 CSEL2 3 TO 8 Decoder Common Driver COM7 SIN SCLK 16 bits Shift Register 16 bits Data Latch IREF Segment Driver and Current Control S0 S15 2 POST OFFICE BOX 6553 DALLAS, TEXAS 75265

3 TERMINAL NAME NO. I/O Terminal Functions DESCRIPTION Á Blank(light off). By turning all the output for the common driver off, the LED is turned off. When BLANK Á 39 IÁÁ BLANK is high, the LED is turned off. COM0 COM7 Á 4, 3, 2, 1, 47, 46, Á 45, 44 OÁÁ LED common driver output ÁÁ Common driver select. One terminal out of COM0 through COM7 is selected Common Driver L L L 0 L L H 1 L H L 2 CSEL0 2 38, 36, 35 I L H H 3 H L L 4 H L H 5 H H L 6 H H H 7 Á 33 I Display select. When is high, the LED is turned off. Note that, when BLANK is high, ÁÁ the LED is turned off with no regard to the input. Á OÁÁ Display select output. The inverted data of is clocked out. GNDANA Á 21 Á Analog ground GNDLED Á 5, 43, 48 Á LED driver ground GNDLOG 37 Logic ground Constant current control setting. The LED current is set to the desired value by connecting IREF Á 17 IÁÁ an external resistor between IREF and GND. ÁÁ 41 ÁÁ IÁÁ Latch. When is high, data on the shift register goes through latch. When is ÁÁ low, data is latched. SIN 42 I Serial input for display 32 O Serial output for display SCLK Á I Synchronous clock input for serial data transfer. The input data of SIN is synchronized to ÁÁ the rising edge of SCLK, and transferred to. 9, 10, 11, 12, 13, 14, Á S0 S15 15, 16, 22, 23, 24, ÁÁ O LED segment driver output ÁÁ 25, 26, 27, 28, 29 VANA Á 19 Á Analog power supply voltage VLOG Á 34 Á Logic power supply voltage VLED Á 8, 18, 31 Á LED driver power supply voltage POST OFFICE BOX 6553 DALLAS, TEXAS

4 absolute maximum ratings (see Note 1) Logic supply voltage, V (LOG) V to 7 V LED supply voltage, V (LED) V to 7 V Analog supply voltage, V (ANA) V to 7 V Output current, I OH(S) ma Output current, I OL(C) ma Input voltage range, V I V to V (LOG) V Output voltage range, V O V to V (LOG) V Continuous total power dissipation mw Thermal resistance C/W Operating free-air temperature range (see Note 2), T A to 85 C Storage temperature range, T stg C to 125 C Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values are with respect to GND terminal. 2. TJ 150 C (refer to appendix thermal condition). recommended operating conditions dc characteristics (see Note 3) PARAMETER TEST CONDITIONS Á MIN NOMÁ MAX UNIT Logic supply voltage, V(LOG) 4.55Á 5.5 V LED supply voltage, V(LED) 4.5 Á V Analog power supply, V(ANA) V Á Voltage between GND and V(DEF), G(DEF) G(DEF) = GND(LOG) GND(LED) V ÁÁ High-level input voltage, VIH 2.0 V(LOG) V Low-level input voltage, VIL GND(LOG) 0.8 V High-level output current, IOH V(LOG) = 4.5V,, Á 1 High-level output current, IOH(S) S0 to S15 Á ma Low-level output current, IOL V(LOG) = 4.5V,, Á 1.6 Low-level output current, IOL(C) DUTY = 1/16, COM0 to COM7 Á 6 ma Operating free-air temperature range, TA (see Note 2) 20 Á 85 C NOTES: 2 TJ 150 C (refer to appendix thermal condition). 3. VANA must be same as VLED. ac characteristics (T A = 20 C to 85 C) PARAMETER TEST CONDITIONS MINÁ NOM Á MAX UNIT f(sclk) Á Shift clock frequency 10 MHz tw(h)/tw(l) SCLK pulse duration (high- or low-level) ns Á tr/tf Rise/fall time 100 ns Á SIN SCLK 10 Á tsu Á Setup time ÁÁ SCLK 10 Á ns Á SCLK 10 Á th Hold time Á SIN SCLK 10 Á ns 4 POST OFFICE BOX 6553 DALLAS, TEXAS 75265

5 electrical characteristics (unless otherwise noted), MIN/MAX: V (LOG) = V (ANA) = V (LED) = 4.5 V to 5.5 V, T A = 20 C to 85 C TYP: V (LOG) = V (ANA) = V (LED) = 5 V, T A = 25 C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOH High-level output voltage IOH = 1 ma,, 3.6 V Á IOL = 1.6 ma,, 0.6 Á VOL Low-level output voltage IOL = 6 ma, COM0 to COM V Á II Input current VI = V(LOG) or ÁÁ GND(LOG) ±1 µa Á I(LOG) ÁÁ Data transfer, SCLK = 10 MHz ÁÁ 0.1 Á I(LED) Supply current LED is turned off ma Á I(ANA) ÁÁ LED is turned off IOH(S03) V(Sn) = 2.5 V, R(IREF) = 4200 Ω IOH(S10) V(Sn) = 2.5 V, R(IREF) = 1260 Ω Á Segment current IOH(S20) V(Sn) = 2.5 V, R(IREF) = 6 Ω Á ma IOH(S) V(Sn) = 2.5 V, R(IREF) = 420 Ω IOH(S) Segment current error between bits V(LED) = 5 V, R(IREF) = 6 Ω, V(Sn) = 2.5 V ±3% ±6% Á VREF Voltage reference Á V switching characteristics, C L = 15 pf Á Á PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Á Á tr Rise time Á COMn Á 80 ns Sn Á 80 Á tf Á Fall time ns COMn Á Sn Á Sn SCLK Sn Á td Propagation delay time Á SCLK Á ns Á CSELn COMn Á 120 t(dlh) Propagation delay time COMn 120 ns ( Á Á BLANK COMn 120 Á CSELn COMn Á Á t(dhl) Propagation delay time COMn ns BLANK COMn Á POST OFFICE BOX 6553 DALLAS, TEXAS

6 PARAMETER MEASUREMENT INFORMATION POWER RATING vs FREE-AIR TEMPERATURE IPower Rating TA Free-Air Temperature C VCC = 5 V, V(Sn) = 2.5 V, TA = 25 C SEGMENT CURRENT I OHS I OH(S) ma Segment Current I OH(S) V REF R (IREF) R(IREF) kω 6 POST OFFICE BOX 6553 DALLAS, TEXAS 75265

7 td COMMON timing diagram (common driver) CSEL0 CSEL1 CSEL2 tsu BLK CSEL th BLK CSEL BLANK td BLK COMMON COM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7 Segment Data Write Timing td BLK COMMON td POST OFFICE BOX 6553 DALLAS, TEXAS

8 8 POST OFFICE BOX 6553 DALLAS, TEXAS timing diagram (segment driver) SCLK SIN S0 S1 S14 tsu D CLK ÏÏÏÏ ÏÏÏ ÏÏÏ th D CLK ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ tclk twl D0A D1A D2A D14A D15A D0B D1B D2B D14B D15B D0C D1C D2C th(lat SCLK) twh D15A D14A D1A tsu(lat SCLK) tw LAT td LAT SO tf tr D15A D14A D1A D14B D13B D0B td SCLK SO D15B D0C D1C D14B D15B D0C D1B D2B D3B TLC5920 Template Release Date: S15 D0A D0A D15A D0B D1B D2B ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ td SCLK D0A D1A D2A D14A D15A D0B D01B D2B ÏÏÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏÏ ÏÏÏ ÏÏÏ ÏÏÏ

9 APPLICATION INFORMATION example 1 The other remaining terminals used for dot matrix LED drive can be utilized for LED lamp drive and other displays. LEDs driven by TLC5920 cathode common type Á LED TLC5920 DRIVE CURRENT TYPE NO. OF COLOR QUANTITY QUANTITY Á DUTY ÁÁ (ma) Mono Á 16 1 Á Static ÁÁ LAMP Two Á 8 1 Á Static ÁÁ Á Mono Á 16 1 Á 1/8 ÁÁ 7 SEGMENT Two Á 8 1 Á 1/8 ÁÁ Mono 3 1 1/8 5x7 ÁÁ Two 1 1 1/8 Á Mono 2 1 1/8 8x8 8 ÁÁ Two 1 1 1/8 Mono Á 2 2 Á 1/16 ÁÁ x 16 Á Two Á 1 2 Á 1/16 ÁÁ 20 Three Á 1 3 Á 1/16 ÁÁ 13 Mono Á 2 3 Á 1/24 ÁÁ 13 24x24 Two 1 3 1/24 13 TLC5920 COM7 COM6 COM0 S15 S14 S10 S9 S5 S4 S0 = LED POST OFFICE BOX 6553 DALLAS, TEXAS

10 example 2 APPLICATION INFORMATION Using two TLC5920s, an LED with two colors and 16 x 16 dots can be driven. The number of LED arrays can also be increased by making a cascade connection in the application circuit. CSEL0 CSEL1 CSEL2 BLANK SCLK 1IREF 1 1 Green 2SIN Red 2 Red 2 2IREF IREF CSEL0 CSEL1 CSEL2 BLANK IC2 TLC5920 SIN SCLK COM7 IREF CSEL0 CSEL1 CSEL2 BLANK IC1 TLC5920 SIN SCLK COM7 1SIN Green S15 COM0 S0 S15 COM0 S0 16 x 16 Dots Two Colors LED Array = LED 10 POST OFFICE BOX 6553 DALLAS, TEXAS 75265

11 DL (R-PDSO-G**) 48 PINS SHOWN MECHANICAL DATA PLASTIC SMALL-OUTLINE PACKAGE (0,635) (0,5) (0,203) (0,13) M (0,15) NOM (7,59) (7,39) (10,67) (10,03) Gage Plane (0,25) 1 A (1,02) (0,51) (2,79) MAX (0,20) MIN Seating Plane (0,10) DIM PINS ** A MAX (9,65) 0.6 (16,00) 0.7 (18,54) A MIN (9,) (15,75) (18,29) 048/ D 08/97 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion not to exceed (0,15). D. Falls within JEDEC MO-118 POST OFFICE BOX 6553 DALLAS, TEXAS

12 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ( CRITICAL APPLICATIONS ). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER S RISK. In order to minimize risks associated with the customer s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI s publication of information regarding any third party s products or services does not constitute TI s approval, warranty or endorsement thereof. Copyright 2000, Texas Instruments Incorporated

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