STP08DP05B1R

STP08DP05 Low voltage 8-Bit constant current Led sink with full outputs error detection Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Low voltage power supply down to 3V 8 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 The detection functionality is implemented without increasing the pin 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 STP08DP05 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 STP08DP05 guarantees a 20V output driving capability, allowing users to connect more LEDs in series. The high clock frequency, 30MHz, also satisfies the system requirement of high volume data transmission. The 3.3V of voltage supply is well useful for applications that interface any micro from 3.3V. Compared with a standard TSSOP package, the TSSOP exposed pad increases heat dissipation capability by a 2.5 factor.. TSSOP16 SO-16 Dip-16 TSSOP16 (Exposed pad) Description The STP08DP05 is a monolithic, low voltage, low current power 8-bit shift register designed for LED panel displays. The STP08DP05 contains a 8-bit serial-in, parallel-out shift register that feeds a 8bitD-type storage register. In the output stage, eight regulated current sources were designed to provide 5-100mA constant current to drive the LEDs. The STP08DP05 is backward compatible in the functionality and footprint with STP8C/L596 and extends its functionality with open and short detection on the outputs. The detection circuit checks 3 different conditions that can occur on the output line: short to GND, short to VO or open line. The data detection results are loaded in the shift register and shifted out via the serial line output. Table 1. Device summary Part Number STP08DP05B1R STP08DP05MTR STP08DP05TTR STP08DP05XTTR May 2007 Package DIP-16 Packaging 25 parts per tube 2500 parts per reel 2500 parts per reel 2500 parts per reel 1/30 www.st.com 30 SO-16 (Tape & Reel) TSSOP16 (Tape & Reel) TSSOP16 Exposed-Pad (Tape & Reel) Rev 2 Contents STP08DP05 Contents 1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Pin connection and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 3.2 3.3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 5 6 7 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Switching characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Equivalent circuit and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Truth table and timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.1 7.2 Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8 9 10 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Detection mode functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 10.1 10.2 10.3 10.4 Phase one: “entering in detection mode“ . . . . . . . . . . . . . . . . . . . . . . . . . 18 Phase two: “error detection“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Phase three: “resuming to normal mode” . . . . . . . . . . . . . . . . . . . . . . . . . 20 Error detection conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 11 12 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2/30 STP08DP05 Summary description 1 Summary description Table 2. Typical current accuracy Current accuracy Output voltage Between bits ≥1.3V ±1.5% Between ICs ±5% 20 to 100mA Output current 1.1 Pin connection and description Figure 1. Connections diagram Note: The Exposed-pad is electrically not connected Table 3. Pin description PIN N° 1 2 3 4 5-12 13 14 15 16 Symbol GND SDI CLK LE/DM1 OUT 0-7 OE/DM2 SDO R-EXT VDD Ground terminal Serial data input terminal Clock input terminal Latch input terminal Output terminal Output enable input terminal (active low) Serial data out terminal Constant current programming 5V Supply voltage terminal Name and function 3/30 Block diagram STP08DP05 2 Figure 2. Block diagram Normal mode - block diagram 4/30 STP08DP05 Maximum rating 3 Maximum rating 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. 3.1 Absolute maximum ratings Table 4. Absolute maximum ratings Symbol VDD VO IO IGND fCLK TOPR TSTG Parameter Supply voltage IGND Output voltage Output current GND terminal current Clock frequency Operating temperature range Storage temperature range Value 0 to 7 -0.5 to 20 100 800 50 -40 to +125 -55 to +150 Unit V V mA mA MHz °C °C 3.2 Thermal data Table 5. Thermal data Symbol RthJA Parameter Thermal resistance junction-ambient DIP-16 SO-16 TSSOP-16 60 75 85 TSSOP-16 (1) (exposed pad) 37.5 Unit °C/W 1. The Exposed-Pad should be soldered to the PBC to realize the thermal benefits 5/30 Maximum rating STP08DP05 3.3 Recommended operating conditions Table 6. Recommended operating conditions Symbol VDD VO IO IOH IOL VIH VIL twLAT twCLK twEN Parameter Supply voltage Output voltage Output current Output current Output current Input voltage Input voltage LE/DM1 pulse width CLK pulse width OE/DM2 pulse width VDD = 3.0 to 5.0V OUTn SERIAL-OUT SERIAL-OUT 0.7VDD -0.3 20 20 200 7 4 15 Cascade operation (1) 30 5 Test conditions Min 3.0 Typ Max 5.5 20 100 +1 -1 VDD+0.3 0.3VDD Unit V V mA mA mA V V ns ns ns ns ns ns MHz tSETUP(D) Setup time for DATA tHOLD(D) Hold time for DATA tSETUP(L) Setup time for LATCH fCLK Clock frequency 1. If the device is connected in cascade, it may not be possible achieve the maximum data transfer. Please consider the timings carefully. 6/30 STP08DP05 Electrical characteristics 4 Electrical characteristics Table 7. Electrical characteristics (VDD=3.3V to 5V, T = 25°C, unless otherwise specified.) Symbol VIH VIL IOH VOL VOH IOL1 IOL2 IOL3 ∆IOL1 ∆IOL2 ∆IOL3 RSIN(up) Output current error between bit (All Output ON) Pull-up resistor Output current Parameter Input voltage high level Input voltage low level Output leakage current Output voltage (Serial-OUT) Output voltage (Serial-OUT) VOH = 20V IOL = 1mA IOH = -1mA VO = 0.3V, Rext = 3.9kΩ VO = 0.3V, Rext = 970Ω VO = 1.3V, Rext = 190Ω VO = 0.3VREXT = 3.9kΩ VO = 0.3VREXT = 970Ω VO = 1.3VREXT =190Ω 150 100 REXT = 980 OUT 0 to 7 = OFF Supply current (OFF) IDD(OFF2) IDD(ON1) Supply current (ON) IDD(ON2) Thermal Thermal protection (1) REXT = 250 OUT 0 to 7 = ON 11.7 170 13.5 °C REXT = 250 OUT 0 to 7 = OFF REXT = 980 OUT 0 to 7 = ON 11.2 4.5 13.5 mA 5 VOH - VDD =- 0.4V 4.25 19 96 5 20 100 ±5 ± 1.5 ± 1.2 300 200 4 5.75 21 104 ±8 ±3 ±3 600 400 5 KΩ KΩ % mA Test conditions Min 0.7VDD GND 0.5 0.03 Typ Max VDD 0.3VDD 10 0.4 Unit V V µA V V RSIN(down) Pull-down resistor IDD(OFF1) 1. Guaranteed by desing (not tested) The thermal protection switches OFF only the outputs current 7/30 Switching characteristics STP08DP05 5 Table 1. Symbol tPLH1 Switching characteristics Switching characteristics (VDD = 5V, T = 25°C, unless otherwise specified.) Parameter Propagation delay time, CLK-OUTn, LE\DM1 = H, OE\DM2 = L Propagation delay time, LE\DM1 -OUTn, OE\DM2 = L Propagation delay time, OE\DM2-OUTn, LE\DM1 = H Propagation delay time, CLK-SDO Propagation delay time, CLK-OUTn, LE\DM1 = H, OE\DM2 = L Propagation delay time, LE\DM1 -OUTn, OE\DM2 = L Propagation delay time, OE\DM2-OUTn, LE\DM1 = H Propagation delay time, CLK-SDO Output rise time 10~90% of voltage waveform Output fall time 90~10% of voltage waveform CLK rise time (1) CLK fall time (1) Test conditions VDD = 3.3V VDD = 5V VDD = 3.3V VDD = 5V VDD = 3.3V VDD = 5V VDD = 3.3V VDD = 5V VDD = 3.3V VDD = 3.3 V VIL = GND IO = 20mA REXT = 1KΩ VIH = VDD CL = 10pF VL = 3.0 V RL = 60 Ω VDD = 5V VDD = 3.3V VDD = 5V VDD = 3.3V VDD = 5V VDD = 3.3V VDD = 5V VDD = 3.3V VDD = 5V VDD = 3.3V VDD = 5V Min Typ 35 18 48 30 55 36 7 4 10 7 24 20 20 17 22 18 25 10 5 4 Max 70 ns 35 90 ns 60 110 ns 75 14 ns 8 20 ns 14 50 ns 40 40 ns 35 30 ns 25 60 ns 25 15 ns 12 5000 5000 ns ns Unit tPLH2 tPLH3 tPLH tPHL1 tPHL2 tPHL3 tPHL tON tOFF tr tf 1. In order to achieve high cascade data transfer, please consider tr/tf timings carefully. 8/30 STP08DP05 Equivalent circuit and outputs 6 Equivalent circuit and outputs Figure 3. OE/DM2 terminal Figure 4. LE/DM1 terminal Figure 5. CLK, SDI terminal 9/30 Equivalent circuit and outputs Figure 6. SDO terminal STP08DP05 10/30 STP08DP05 Truth table and timing diagram 7 7.1 Truth table and timing diagram Truth table Table 8. Truth table Clock LE/DM1 H OE/DM2 L SDI Dn OUT0 ........ OUT0 ........ OUT7 Dn ..... Dn -5 ..... Dn -7 SDO Dn -7 L L Dn + 1 No Change Dn -7 H L Dn + 2 Dn +2 ..... Dn -3 ..... Dn -5 Dn -5 X L Dn + 3 Dn +2 ..... Dn -3 ..... Dn -5 Dn -5 X H Dn + 3 OFF Dn -5 Note: OUT0 to OUT7 = ON when Dn = H; OUT0 to OUT7 = OFF when Dn = L. 11/30 Truth table and timing diagram STP08DP05 7.2 Timing diagram Figure 7. Timing diagram - normal mode Figure 8. Clock, serial-in, serial-out 12/30 STP08DP05 Figure 9. Clock, serial-in, latch, enable, outputs Truth table and timing diagram Figure 10. Outputs 13/30 Typical characteristics STP08DP05 8 Typical characteristics Figure 11. Output current-REXT resistor 8000 7000 6000 Rext (Ohm) 5000 4000 3000 2000 1000 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 Ouput Current (mA) Table 9. Output current-REXT resistor Output Current (mA) Rext (Ω) 3 6740 5 3930 10 1913 20 963 50 386 80 241 130 124 14/30 STP08DP05 Figure 12. Power dissipation vs temperature package Typical characteristics Note: The Exposed-Pad should be soldered to the PBC to realize the thermal benefits. 15/30 Test circuit STP08DP05 9 Test circuit Figure 13. DC characteristics Figure 14. AC characteristics 16/30 STP08DP05 Figure 15. Timing example for open and/or short detection Test circuit 17/30 Detection mode functionality STP08DP05 10 10.1 Detection mode functionality 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 10. Entering in detection truth table CLK OE/DM2 LE/DM1 1° H L 2° L L 3° H L 4° H H 5° H L Figure 16. 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. 18/30 STP08DP05 Detection mode functionality 10.2 Phase two: “error detection“ The eight 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 17. 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 . 19/30 Detection mode functionality STP08DP05 10.3 Phase three: “resuming to normal mode” The sequence for re-entering in normal mode is showed in the following Table and diagram: Table 11. Resuming to normal mode timing diagram CLK OE/DM2 LE/DM1 1° H L 2° L L 3° H L 4° H L 5° H L Figure 18. Resuming to normal mode timing diagram Note: For proper device operation the “Entering in detection” sequence must be follow by a “Resume Mode” sequence, isn’t possible to insert consecutive equal sequence. 20/30 STP08DP05 Detection mode functionality 10.4 Error detection conditions Table 12. Detection condition (VDD = 3.3 to 5 V Temperature range 25°C) SW-1 or SW-3b Open Line or Output Short to GND detected ==> IODEC ≤ 0.5 x IO No error detected No error detected ==> IODEC ≥ 0.5 x IO ==> VO ≤ 2.2 V SW-2 or SW-3a Short on LED or Short ==> VO ≥ 2.5V to V-LED detected Note: Where: IO = the output current programmed by the REXT , IODEC = the detected output current in detection mode. Figure 19. Detection circuit 16 21/30 Package mechanical data STP08DP05 11 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. 22/30 STP08DP05 Package mechanical data Plastic DIP-16 (0.25) MECHANICAL DATA mm. DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.27 8.5 2.54 17.78 7.1 5.1 0.130 0.050 0.51 0.77 0.5 0.25 20 0.335 0.100 0.700 0.280 0.201 1.65 TYP MAX. MIN. 0.020 0.030 0.020 0.010 0.787 0.065 TYP. MAX. inch P001C 23/30 Package mechanical data STP08DP05 TSSOP16 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0˚ 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8˚ 0.75 0˚ 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8˚ 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0079 0.201 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 24/30 STP08DP05 Package mechanical data TSSOP16 EXPOSED PAD MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D D1 E E1 E2 e K L 0° 0.45 0.60 0.8 0.19 0.09 4.9 1.7 6.2 4.3 1.5 0.65 8° 0.75 0° 0.018 0.024 6.4 4.4 6.6 4.5 5 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 0.031 0.007 0.004 0.193 0.067 0.244 0.169 0.059 0.0256 8° 0.030 0.252 0.173 0.260 0.177 0.197 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0089 0.201 inch 7419276A 25/30 Package mechanical data STP08DP05 Tape & Reel TSSOP16 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.7 5.3 1.6 3.9 7.9 12.8 20.2 60 22.4 6.9 5.5 1.8 4.1 8.1 0.264 0.209 0.063 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.272 0.217 0.071 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch 26/30 STP08DP05 Package mechanical data SO-16 MECHANICAL DATA DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8° (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45° (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.25 1.64 0.46 0.25 0.013 0.007 0.019 0.004 MIN. inch TYP. MAX. 0.068 0.010 0.063 0.018 0.010 0016020D 27/30 Package mechanical data STP08DP05 Tape & Reel SO-16 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.45 10.3 2.1 3.9 7.9 12.8 20.2 60 22.4 6.65 10.5 2.3 4.1 8.1 0.254 0.406 0.082 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.262 0.414 0.090 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch 28/30 STP08DP05 Revision history 12 Revision history Table 13. Revision history Date 3-Apr-2007 21-May-2007 Revision 1 2 First release Updated Table 7 on page 7 Changes 29/30 STP08DP05 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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