STP16DP05 Low voltage 16-bit constant current LED sink driver with outputs error detection Features ■ Low voltage power supply down to 3V ■ 16 constant current output channels ■ Adjustable output current through external resistor ■ Short and open output error detection ■ Serial Data IN/Parallel data OUT ■ 3.3V micro driver-able ■ Output current: 5-100mA ■ 30MHz clock frequency ■ Available in high thermal efficiency TSSOP exposed pad ■ ESD protection 2.5kV HBM, 200V MM SO-24 TSSOP24 The data detection results are loaded in the shift register and shifted out via the serial line output. Description The STP16DP05 is a monolithic, low voltage, low current power 16-bit shift register designed for LED panel displays. The device contains a 16-bit serial-in, parallel-out shift register that feeds a 16bitD-type storage register. In the output stage, sixteen regulated current sources were designed to provide 5-100mA constant current to drive the LEDs. The STP16DP05 features open and short LED detections on the outputs.The STP16DP05 is backward compatible with STP16C/L596.The detection circuit checks 3 different conditions that can occur on the output line: short to GND, short to VO or open line. Table 1. July 2007 TSSOP24 (exposed pad) The detection functionality is implemented without increasing the pin count number, through a secondary function of the output enable and latch pin (DM1 and DM2 respectively), a dedicated logic sequence allows the device to enter or leave from detection mode. Through an external resistor, users can adjust the STP16DP05 output current, controlling in this way the light intensity of LEDs, in addition, user can adjust LED’s brightness intensity from 0% to 100% via OE/DM2 pin. The STP16DP05 guarantees a 20V output driving capability, allowing users to connect more LEDs in series. The high clock frequency, 30MHz, makes the device suitable for high data rate transmission. The 3.3V voltage supply is well useful for applications that interface any 3.3V micro. Compared with a standard TSSOP package, the TSSOP exposed pad increases heat dissipation capability by a 2.5 factor. Device summary Order codes Package Packaging STP16DP05MTR SO-24 (Tape & reel) 1000 parts per reel STP16DP05TTR TSSOP24 (Tape & reel) 2500 parts per reel STP16DP05XTTR TSSOP24 Exposed pad (Tape & reel) 2500 parts per reel Rev 3 1/28 www.st.com 28 Contents STP16DP05 Contents 1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 2 Pin connection and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Equivalent circuit and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 Detection mode functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.1 Phase one: “entering in detection mode“ . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.2 Phase two: “error detection” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.3 Phase three: “resuming to normal mode” . . . . . . . . . . . . . . . . . . . . . . . . . 19 7.4 Error detection conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2/28 STP16DP05 1 Summary description Summary description Table 2. Typical current accuracy Current accuracy Output voltage ≥ 1.3V 1.1 Between ICs ±1.5% ±5% Output current VDD temp. 20 to 100 mA 3.3V to 5V 25°C Pin connection and description Figure 1. Note: Between bits Pin connection The exposed pad is electrically not connected Table 3. Pin description PIN N° Symbol Name and function 1 GND Ground terminal 2 SDI Serial data input terminal 3 CLK 4 LE-DM1 Clock input terminal 5-20 OUT 0-15 Output terminal 21 OE-DM2 Input terminal of output enable (active low) - Detect mode 1 (see operation principle) 22 SDO 23 R-EXT 24 VDD Latch input terminal - Detect mode 1 (see operation principle) Serial data out terminal Input terminal of an external resistor for constant current programing Supply voltage terminal 3/28 Electrical ratings STP16DP05 2 Electrical ratings 2.1 Absolute maximum ratings Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 4. Absolute maximum ratings Symbol 2.2 Parameter Value Unit VDD Supply voltage 0 to 7 V VO Output voltage -0.5 to 20 V IO Output current 100 mA VI Input voltage -0.4 to VDD V 1600 mA 50 MHz Value Unit IGND GND terminal current fCLK Clock frequency Thermal data Table 5. Symbol Thermal data Parameter TOPR Operating temperature range -40 to +125 °C TSTG Storage temperature range -55 to +150 °C 60 °C/W 85 °C/W TSSOP24 Exposed Pad 37.5 °C/W SO-24 75 °C/W DIP-24 TSSOP24 RthJC Thermal resistance junction-case (1) 1. The exposed pad should be soldered directly to the PCB to realize the thermal benefits. 4/28 STP16DP05 2.3 Electrical ratings Recommended operating conditions Table 6. Symbol Recommended operating conditions Parameter Test conditions Min 3.0 Typ Max Unit 5.5 V 20 V 100 mA VDD Supply voltage VO Output voltage IO Output current OUTn IOH Output current SERIAL-OUT +1 mA IOL Output current SERIAL-OUT -1 mA VIH Input voltage 0.7VDD VDD+0.3 V VIL Input voltage -0.3 0.3VDD V 5 twLAT LE\DM1 pulse width 20 ns twCLK CLK pulse width 20 ns twEN OE\DM2 pulse width 200 ns 20 ns 15 ns 15 ns tSETUP(D) Setup time for DATA VDD = 3.0V to 5.0V tHOLD(D) Hold time for DATA tSETUP(L) Setup time for LATCH fCLK Clock frequency Cascade operation (1) 30 MHz 1. If the device is connected in cascade, it may not be possible achieve the maximum data transfer. Please consider the timings carefully. 5/28 Electrical characteristics STP16DP05 3 Electrical characteristics Table 7. Electrical characteristics (VDD = 3.3V to 5V, T = 25°C, unless otherwise specified.) Symbol Parameter Test conditions Min Typ Max Unit VIH Input voltage high level 0.7VDD VDD V VIL Input voltage low level GND 0.3VDD V IOH Output leakage current VOH = 20V 10 µA VOL Output voltage (Serial-OUT) IOL = 1mA 0.4 V VOH Output voltage (Serial-OUT) IOH = -1mA IOL1 VOH -VDD = -0.4V V VO = 0.3V, Rext = 3.9kΩ 4.25 5 5.75 VO = 0.3V, Rext = 970Ω 19 20 21 VO = 1.3V, Rext = 190Ω 96 100 104 VO = 0.3VREXT = 3.9kΩ ±5 ±8 VO = 0.3VREXT = 970Ω ± 1.5 ±3 VO = 1.3VREXT =190Ω ± 1.2 ±3 150 300 600 KΩ 100 200 400 KΩ REXT = 970 OUT 0 to 15 = OFF 4 5 IDD(OFF2) REXT = 240 OUT 0 to 15 = OFF 11.2 13.5 IDD(ON1) REXT = 970 OUT 0 to 15 = ON 4.5 5 REXT = 240 OUT 0 to 15 = ON 11.7 13.5 IOL2 Output current IOL3 ∆IOL1 ∆IOL2 ∆IOL3 RSIN(up) Output current error between bit (All Output ON) Pull-up resistor RSIN(down) Pull-down resistor IDD(OFF1) mA % Supply current (OFF) mA Supply current (ON) IDD(ON2) Thermal Thermal protection (1) 1. Guaranteed by desing (not tested) The thermal protection switches OFF only the outputs current 6/28 170 °C STP16DP05 Table 8. Symbol Electrical characteristics Switching characteristics (VDD = 5V, T = 25°C, unless otherwise specified.) Parameter Test conditions Min Typ Max VDD = 3.3V 70 105 VDD = 5V 45 65 tPLH1 Propagation delay time, CLK-OUTn, LE\DM1 = H, OE\DM2 = L Propagation delay time, LE\DM1 -OUTn, OE\DM2 = L VDD = 3.3V 61 90 tPLH2 VDD = 5V 41 60 Propagation delay time, OE\DM2-OUTn, LE\DM1 = H VDD = 3.3V 69 105 tPLH3 VDD = 5V 50 70 Propagation delay time, CLK-SDO VDD = 3.3V 14 20 tPLH VDD = 5V 8 12 Propagation delay time, CLK-OUTn, LE\DM1 = H, OE\DM2 = L VDD = 3.3V 34 50 tPHL1 VDD = 5V 23 35 Propagation delay time, LE\DM1 -OUTn, OE\DM2 = L VDD = 3.3V 27 40 tPHL2 VDD = 5V 22 32 Propagation delay time, OE\DM2-OUTn, LE\DM1 = H VDD = 3.3V 23 35 tPHL3 VDD = 5V 20 30 Propagation delay time, CLK-SDO VDD = 3.3V 15 25 tPHL VDD = 5V 9 15 Output rise time 10~90% of voltage waveform VDD = 3.3V 42 65 tON VDD = 5V 35 55 Output fall time 90~10% of voltage waveform VDD = 3.3V 10 16 tOFF VDD = 5V 9 14 Unit ns ns ns VDD = 3.3 V VIL = GND IO = 20mA REXT = 1KΩ VIH = VDD CL = 10pF VL = 3.0 V RL = 60 Ω ns ns ns ns ns ns ns tr CLK rise time (1) 5000 ns tf CLK fall time (1) 5000 ns 1. In order to achieve high cascade data transfer, please consider tr/tf timings carefully. 7/28 Equivalent circuit and outputs 4 8/28 Equivalent circuit and outputs Figure 2. OE\DM2 terminal Figure 3. LE\DM1 terminal Figure 4. CLK, SDI terminal STP16DP05 STP16DP05 Equivalent circuit and outputs Figure 5. SDO terminal Figure 6. Block diagram 9/28 Timing diagrams 5 STP16DP05 Timing diagrams Table 9. CLOCK Note: Truth table LE\DM1 OE\DM2 SERIAL-IN OUT0 ............. OUT7 ................ OUT15 SDO H L Dn Dn ..... Dn - 7 ..... Dn -15 Dn - 15 L L Dn + 1 No Change Dn - 14 H L Dn + 2 Dn + 2 ..... Dn - 5 ..... Dn -13 Dn - 13 X L Dn + 3 Dn + 2 ..... Dn - 5 ..... Dn -13 Dn - 13 X H Dn + 3 OFF Dn - 13 OUTn = ON when Dn = H OUTn = OFF when Dn = L Figure 7. Timing diagram LE\DM1 OE\DM2 Note: 10/28 The latches circuit holds data when the LE\DM1 terminal is Low. 1 When LE\DM1 terminal is at High level, latch circuit hold the data it passes from the input to the output. 2 When OE\DM2 terminal is at Low level, output terminals OUT0 to OUT15 respond to the data, either ON or OFF. 3 When OE\DM2 terminal is at High level, it switches off all the data on the output terminal. STP16DP05 Timing diagrams Figure 8. Clock, serial-in, serial-out Figure 9. Clock, serial-in, latch, enable, outputs LE\DM1 OE\DM2 11/28 Timing diagrams Figure 10. Outputs 12/28 STP16DP05 STP16DP05 6 Typical characteristics Typical characteristics Figure 11. Output current-REXT resistor Table 10. Output current-REXT resistor Rext (Ohm) Output current (mA) 976 20 780 25 652 30 560 35 488 40 433 45 389 50 354 55 325 60 300 65 278 70 259 75 241 80 229 85 215 90 13/28 Typical characteristics STP16DP05 Conditions: Temperature = 25°C, VDD = 3.3V; 5.0V, ISET = 3mA; 5mA; 10mA; 20mA; 50mA; 80mA. Vdrop (mV) Figure 12. ISET vs drop out voltage (Vdrop) 800 700 600 500 400 300 200 100 0 Avg @ 3.0V Avg @ 5.0V 0 20 40 60 80 Iset mA) Table 11. 14/28 ISET vs drop out voltage (Vdrop) Iout (mA) Avg @ 3.0V Avg @ 5.0V 3 19.33 22.66 5 36.67 40.33 10 77.33 80 20 158.67 157.33 50 406 406 80 692 668 STP16DP05 Typical characteristics Figure 13. IDD ON\OFF 14 12 Idd (mA) 10 8 IddON Avg @ 5.5V IddON Avg @ 3.6V 6 IddOFF Avg @ 5.5V 4 IddOFF Avg @ 3.6V 2 0 0 10 20 30 40 50 Iset (mA) 60 70 80 90 Figure 14. Power dissipation vs temperature package Note: The Exposed-Pad should be soldered to the PBC to realize the thermal benefits. 15/28 Detection mode functionality STP16DP05 7 Detection mode functionality 7.1 Phase one: “entering in detection mode“ From the “Normal Mode” condition the device can switch to the “Error Mode“ by a logic sequence on the OE\DM2 and LE/DM1 pins as showed in the following table and diagram: Table 12. Entering in detection truth table CLK 1° 2° 3° 4° 5° OE/DM2 H L H H H LE/DM1 L L L H L Figure 15. Entering in detection timing diagram After these five CLK cycles the device goes into the “Error Detection Mode“ and at the 6th rise front of CLK the SDI data are ready for the sampling. 16/28 STP16DP05 7.2 Detection mode functionality Phase two: “error detection” The 16 data bits must be set “1“ in order to set ON all the outputs during the detection. The data are latched by LE/DM1 and after that the outputs are ready for the detection process. When the Micro controller switches the OE\DM2 to LOW, the device drives the LEDs in order to analyze if an OPEN or SHORT condition has occurred. Figure 16. Detection diagram The LEDs status will be detected at least in 1 microsecond and after this time the microcontroller sets OE\DM2 in HIGH state and the output data detection result will go to the microprocessor via SDO. Detection mode and normal mode use both the same format data. As soon as all the detection data bits are available on the serial line, the device may go back to normal mode of operation. To re-detect the status the device must go back in normal mode and reentering in error detection mode . 17/28 Detection mode functionality Figure 17. Timing example for open and/or short detection 18/28 STP16DP05 STP16DP05 7.3 Detection mode functionality Phase three: “resuming to normal mode” The sequence for re-entering in normal mode is showed in the following Table and diagram: Figure 18. Resuming to normal mode timing diagram CLK 1° 2° 3° 4° 5° OE/DM2 H L H H H LE/DM1 L L L L L Note: For proper device operation the "Entering in detection" sequence must be follow by a "Resume Mode" sequence, it is not possible to insert consecutive equal sequence. 7.4 Error detection conditions Table 13. Note: Detection conditions (VDD = 3.3 to 5 V temp. range -40 to 125°C) SW-1 or SW-3b Open line or output ==> IODEC ≤ 0.5 x IO short to GND detected No error detected ==> IODEC ≥ 0.5 x IO SW-2 or SW-3a Short on LED or short ==> VO ≥ 2.4 V to V-LED detected No error detected ==> VO ≤ 2.2 V Where: IO = the output current programmed by the REXT , IODEC = the detected output current in detection mode Figure 19. Detection circuit 16 STP16DP05 19/28 Detection mode functionality STP16DP05 Figure 20. Error detection sequence 16 CLK pulse are required to load the data setting 1 into shift register LE and OE Key Sequence necessary to Enter in EDM 20/28 The LE pulse latch the data loaded during the previous state During the error detection are necessary at least 2 CLK signal plus oneat the end Every CLK pulse shows the results of single Output results:Out15;14; 13 etc. etc After OE signal turn High the SDO pin show the results of Error Detection (Open or Short in this case) The OE Pulse put the device from EDM to Normal Mode STP16DP05 8 Package mechanical data Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com 21/28 Package mechanical data Table 14. STP16DP05 TSSOP24 mechanical data mm. inch Dim. Min Typ A A1 Max Typ 1.1 0.05 A2 0.15 Max 0.043 0.002 0.9 0.006 0.035 b 0.19 0.30 0.0075 0.0118 c 0.09 0.20 0.0035 0.0079 D 7.7 7.9 0.303 0.311 E 4.3 4.5 0.169 0.177 e 0.65 BSC 0.0256 BSC H 6.25 6.5 0.246 0.256 K 0° 8° 0° 8° L 0.50 0.70 0.020 0.028 Figure 21. TSSOP24 package dimensions 22/28 Min STP16DP05 Package mechanical data Table 15. Tape and reel TSSOP24 mm. inch Dim. Min A Typ Max Min 330 Max 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Typ 0.504 22.4 0.519 0.882 Ao 6.8 7 0.268 0.276 Bo 8.2 8.4 0.323 0.331 Ko 1.7 1.9 0.067 0.075 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.476 Figure 22. Reel dimensions 23/28 Package mechanical data Table 16. STP16DP05 SO-24 mechanical data mm. inch Dim. Min Typ A a1 Max Min 2.65 0.1 Max 0.104 0.2 a2 0.004 0.008 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.012 C 0.5 0.020 c1 45°(typ.) D 15.20 15.60 0.598 0.614 E 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 13.97 0.550 F 7.40 7.60 0.291 0.300 L 0.50 1.27 0.020 0.050 S Figure 23. SO-24 package dimensions 24/28 Typ °(max.) 8 STP16DP05 Package mechanical data Table 17. Tape and reel SO-24 mm. inch Dim. Min A Typ Max Min 330 Max 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Typ 0.504 30.4 0.519 1.197 Ao 10.8 11.0 0.425 0.433 Bo 15.7 15.9 0.618 0.626 Ko 2.9 3.1 0.114 0.122 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.476 Figure 24. Reel dimensions 25/28 Package mechanical data Table 18. STP16DP05 TSSOP24 exposed-pad mm inch Dim. Min Typ A 1.2 A1 0.15 A2 0.8 b 1 Min Typ Max 0.047 0.004 0.006 0.039 0.041 1.05 0.031 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 D 7.7 7.9 0.303 D1 7.8 2.7 0.307 0.311 0.106 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.5 0.169 0.173 0.177 E2 1.5 e 0.65 K 0° L 0.45 0.60 Figure 25. TSSOP24 dimensions 26/28 Max 0.059 0.0256 8° 0° 0.75 0.018 8° 0.024 0.030 STP16DP05 9 Revision history Revision history Table 19. Revision history Date Revision Changes 9-Jan-2007 1 First release 21-May-2007 2 Updated Table 7 on page 6 10-Jul-2007 3 Updated Table 9: Truth table on page 10 27/28 STP16DP05 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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