LDS8160-002-T2 IXYS, LDS8160-002-T2 Datasheet
LDS8160-002-T2
Specifications of LDS8160-002-T2
Related parts for LDS8160-002-T2
LDS8160-002-T2 Summary of contents
Page 1
... The EN logic input functions as a chip enable. A logic temperature HIGH applied at EN allows the LDS8160 to respond communication. A serial address pin, SADD, supports use in multi-target applications. The device operates from 2.3V to 5.5V. The LDS8160 is available in a 0.4mm pitch 12-ball WCSP 0.8 mm 16-lead TQFN packages. 1 12-bit PWM generators with 2 C serial interface ...
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... LDS8160 TYPICAL APPLICATION CIRCUIT © 2009 IXYS Corp. Characteristics subject to change without notice 2 Doc. No. 8160_DS, Rev. N1.0 ...
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... LDS8160 ABSOLUTE MAXIMUM RATINGS Parameter V , LEDx IN EN, SDAT, SCLK voltage Storage Temperature Range Junction Temperature Range Soldering Temperature HBM ESD Protection Level MM RECOMMENDED OPERATING CONDITIONS Parameter per LED pin LED Total Output Current I LOAD Junction Temperature Range EN pin Input Voltage @ LP Standby Mode Typical application circuit with external components is shown on page 1 ...
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... LDS8160 Name Thermal Hysteresis Wake-up Delay Time (EN Raising Edge) Shutdown Delay Time (EN Falling Edge) LED Driver PWM Ramp-Up time (from PWM write command via I 3 Output short circuit Threshold Note: 1. Vdx = Vin – Vdx = Vin – which I decreases by 10% from set value ...
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... LDS8160 Option 3: Random access with combined (extended) protocol: S Slave Address W A WRITE OPERATION: Option 1: Standard protocol sequencial write: S Slave Address data are send to register m and cycle repeats Option 2: Combined (extended) protocol: S Slave Address Start Condition Sr Start Repeat Condition R, W: Read bit (1), Write bit (0) ...
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... LDS8160 WRITE INSTRUCTION SEQUENCE Standard protocol: Write Instruction Example - Setting 20mA Current in LEDB1 and LEDB2 REGISTER CONFIGURATION AND PROGRAMMING ADDRESS DESCRIPTION 00h Bank A Current setting 01h Bank B Current setting 02h Bank C Current setting 03h Channel Enable 04h Global PWM Dimming 05h ...
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... LDS8160 ADDRESS DESCRIPTION 19h Digital Test Mode 1Ch LED shorted to GND LED Fault Detected ` 1Dh (LED shorted open) 1Eh Configuration register 1Fh Software reset, Standby Ta-Tj Temperature 49h Offset LED shutdown 4Ah Temperature 2-x Table enable and 4Bh breakpoint (T-code) LUT-B Δ ...
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... Accounts for LED package thermal characteristics. See Appendix 3 for details. Silicon diode Tj offset from Ta – correction from ambient temperature to Silicon diode junction temperature. Accounts 5 for LDS8160 package thermal characteristics. Factory default = 02h Silicon diode series resistance offset Factory recommended loaded value = 04h (4 decimal Ω ...
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... LDS8160 Table 2 Register Address Bit 7 Bit 6 Bit 5 Factory Diagnostics Only Request 19h Note: *) Value by default Table 3 Register Address Bit 7 Bit 6 RGB mode PWMs in with 3 LUTs Linear (3 PWM) =1* mode = 1 1Eh WLED mode PWMs in with 1 LUT Logarithmic (1 PWM mode = 0* Note: *) Value by default Table 4 ...
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... LDS8160 Table 6: Offset Codes for Tj-Ta Temperature Gradient Offset (both LED and Si per Table 5). Temperature Temperature Bit3 – 0 Offset C Offset Bit 0 (Ta-Tj) (Ta-Tj) -40 1000 -35 1001 -30 1010 -25 1011 Table 7: T-code values vs. Temperature (for registers 4Ah and 4Bh) Temperature, Temperature, Bit4 – Bit 0 ...
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... C customer-selected slave address followed by binary 0 for write command, i. 001 0001 (see Table 10 0010 0010 (bin) = 22h 2 YY – The LDS8160 I C customer-selected slave address followed by binary 1 for read command, i. 001 0001 (see Table 10 0010 0011 (bin) = 23h © 2009 IXYS Corp. ...
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... C interface after a 500 µsec wakeup (initialization) period. 2 SDAT is the I C serial data line. This is a bidirectional line allowing data to be written into and read from the registers of the LDS8160 2 SCLK is the I C serial clock input. © 2009 IXYS Corp. Characteristics subject to change without notice ...
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... This sequence determines the user- selected programmed settings, and conducts initial diagnostics for open/shorted LEDs. At this point, the I communication and the LDS8160 may be user- programmed. Upon programming completion for all required initial parameters and features’ settings, a calibration command is given by setting bit 4 of the 13 ...
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... The LDS8160 allows two ways for LED current setting. One of them is using registers 00h – 02h (static mode) and other one by using the PWM signal to decrease average LED current value set by these registers (dynamic mode) ...
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... Figure 6: Global Dimming in Logarithmic Mode in percent vs. register 04h data (0% dimming = full LED brightness) In normal operation mode, the LDS8160 senses the LED temperatures from all 3 available channels when in the default RGB (3 channel) mode, or only from the LEDA1 channel when used in the WLED (single channel) mode ...
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... Figure 8: Luminosity vs. LED Forward Current for Nichia NSSM038AT-E RGB LED Figure 9: Total power (combined R, G, and B (NSSM038AT-E RGB LED from Nichia) Figure 10 shows the final plot of typical LDS8160 PWM programmed by the user to adjust for this RGB LED. This accumulated correction takes into account both ...
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... LEDs, unused LED banks can be disabled via the I interface by addressing register 03h with data that represent desired combination of LEDs turned ON/OFF (see Table 1). The LDS8160 unused LED outputs can be left open. LED short/open protection TM Temperature The LDS8160 runs a LED short/open diagnostic routine upon the power up sequence ...
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... High = 1 and the corresponding bit in 1Ch is Low = 0, than the fault is either a short to Vin or open. An open LED pin fault causes no harm in the LDS8160 or LED as the high side driver has no current path from V or GND. Therefore, the fault IN detection status indicates only in the 1Dh diagnostic register, and no further action is required ...
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... Table 2) before addressing to register 1Fh. SHUTDOWN MODE To set LDS8160 in shutdown mode, EN pin should be logic low more than 10 ms. The LDS8160 shutdown current is less than 1 µA. The LDS8160 wakes up from shutdown mode with factory-preset data. To preserve customer-programmed data, use either Normal or LP standby modes. 19 ...
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... LDS8160 PROGRAMMING MODES The LDS8160 is factory preprogrammed with specific defaults for the Nichia NSSM038AT_E RGB LEDs; however, application specific LEDs and other user system conditions may require user programming of the temperature compensation LUTs and other LED specific parameters. © 2009 IXYS Corp. ...
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... LDS8160 TYPICAL CHARACTERISTICS (Over recommended operating conditions unless specified otherwise) Vin = 3.6V, Cin = 1 µ High, T Figure 12 Soft Start POR Delay Time (µs) Figure 14 LED Driver @ 50% PWM Duty Cycle Time (ms) Figure 16 PWM Minimum Pulse Time (µs) © 2009 IXYS Corp. Characteristics subject to change without notice = 25° ...
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... LDS8160 PACKAGE DRAWING AND DIMENSIONS 16-PIN TQFN (HV3), 3mm x 3mm, 0.5mm PITCH SYMBOL MIN NOM A 0.70 0.75 A1 0.00 0.02 A2 0.178 0.203 b 0.20 0.25 D 2.95 3.00 D1 1.65 1.70 E 2.95 3.00 E1 1.65 1.70 e 0.50 typ L 0.325 0.375 m 0.150 typ n 0.225 typ Note: 1. All dimensions are in millimeters 2. Complies with JEDEC Standard MO-220 © ...
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... All packages are RoHS-compliant (Lead-free, Halogen-free). 2) The standard lead finish is Matte-Tin. 3) The device used in the above example is a LDS8160A 002–T2 (3x3 TQFN, Tape & Reel). 4) For additional package and temperature options, please contact your nearest IXYS Corp. Sales office. © 2009 IXYS Corp. ...
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... However, changing the static forward current also shifts the chromaticity of the LED, where each white or color LED has a different dependency with temperature. The LDS8160 uses Dynamic Dimming control to change average LED current while maintaining the peak current thereby causing no color shift. The TM ...
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... Figure A1.5: LED Current Correction Curves with 0 de-rating start and shutdown at 85 The LED Current vs. Temperature curves are then mapped to LDS8160 Δ PWM duty cycle codes that are loaded into each of the three LUTs as 32 4-bit words. Each word can represent from + Δ PWM steps for every 5 C temperature The Δ ...
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... The decided approach is user/application dependent Table A1.1 shows the completed table used as LDS8160 default for Nichia NSSM038AT-E RGB LED with the assumptions overviewed in this example. To aide users in building and loading their specific correction development tool to map LED vendor information and user defined operating points to final calculated LUT data values ...
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... Luminosity vs. LEDs required and/or reduce the total LED system level power over systems that do not employ LED temperature compensation. Figure A1.7 depicts this. Figure A1.7: 27 LDS8160 temperature compensation Allowable LED Forward Current vs. Temperature (WLED NSSW020BT-P1 from Nichia) Doc. No. 8160_DS, Rev. N1.0 ...
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... Register 4Bh should be loaded with bit and bits from Bit 4 to Bit 0 with T-code at 55 register 4Bh should be addressed with data 11 0011 (bin) = 33h (see Table 7 of LDS8160 datasheet). **) Register 4Ah should be loaded with bits from Bit 4 to Bit 0 with T-code addressed with data 11000 (bin) = 18h (see Table 7 of LDS8160 datasheet). © ...
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... LDS8160 Appendix 2 ADJUSTMENTS FOR RGB WHITE BALANCE The LDS8160 allows two ways for LED current setting. One of them is using registers 00h – 02h (static mode) and other one by using PWM signal to decrease average LED current value set by these registers (dynamic mode). For dynamic mode, the LDS8160 integrates 3 digital PWM generators that operate at a frequency of ~ 285 Hz ...
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... LDS8160 nominal current setting for Green Green Dynamic Dimming PWM level for 15 100% = 96% duty cycle. This insures sufficient range for temperature correction. Then the PWM Duty Cycle would 82.7% for Red LED and 9 15 62.8% for Blue LED. Note: maximum Red LED current at 5º ...
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... This method requires that the V temperature coefficient be pre-characterized. -23 (Joules)/deg K , The LDS8160 utilizes both techniques for improved -19 coulombs temperature estimation accuracy. A proprietary digital arbitration algorithm resolves the final temperature estimation every 2.5 seconds from both techniques and a combination of on-chip silicon diode and LED device measurements ...
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... If the calibration starts prior to setting currents to the LEDs, (i.e. after the power-on initialization sequence for the LDS8160), then during the calibration period, we assume that the ambient temperature, Ta, is the same for both the on-chip diode and the LEDs (since no DC current flow in LEDs, there is no appreciable temperature offset incurred) ...
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... LDS8160 LDS8160 Dynamic PWM Dimming Codes (1/Duty Cycle) Appendix 4 Table A4.1 Dynamic Mode Dimming in Logarithmic Mode vs. registers 05h – 07h data 0 00 100 1 01 -72.3 99. -66.3 99. -62.8 99. -60.3 99. -58.3 99. -56.7 99. 55.4 99. -54.3 99. -53.2 99. -52.3 99. -51.5 99. -50.7 99. -50 99. -49.4 99. -48.8 99. -48.2 99.61 ...
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... LDS8160 Table A4.1 Dynamic Mode Dimming in Logarithmic Mode vs. registers 05h – 07h data 96 60 -28.1 96.02 128 97 61 -27.9 95.92 129 98 62 -27.7 95.83 130 99 63 -27.5 95.73 131 100 64 -27.3 95.63 132 101 65 -27.1 95.53 133 102 66 -26.9 95.43 134 ...
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... LDS8160 Table A4.1 Dynamic Mode Dimming in Logarithmic Mode vs. registers 05h – 07h data 192 C0 -11.6 73.46 224 193 C1 -11.3 72.68 225 194 C2 -11.1 71.90 226 195 C3 -10.9 71.12 227 196 C4 -10.6 70.34 228 197 C5 -10.4 69.56 229 198 C6 -10.2 68.77 230 ...
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... LDS8160 LDS8160 Global PWM Dimming Codes Appendix 5 Table A5.1 Global Dimming in Logarithmic Mode vs. register 04h data 0. -0.1 0. -0.3 2. -0.4 3. -0.6 5. -0.7 7. -0.8 8. 10. -1.2 11. -1.3 13. -1.5 14. -1.6 16. -1.8 17. 19. -2.1 21. -2.3 22. -2.5 24. -2.7 25. -2.8 27. 28. -3.2 30. -3.4 32. -3.6 33. -3.8 35. 36. -4.3 38 ...
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... LDS8160 Table A5.1 Global Dimming in Logarithmic Mode vs. register 04h data 96 60 -17.6 86.74 128 97 61 -17.7 86.94 129 98 62 -17.9 87.13 130 99 63 -18 87.33 131 100 64 -18.1 87.52 132 101 65 -18.3 87.72 133 102 66 -18.4 87.92 134 103 67 -18.6 88.11 135 ...
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... LDS8160 Table Global Dimming in Logarithmic Mode vs. register 04h data 192 C0 -32.8 97.68 224 193 C1 -32.9 97.73 225 194 C2 -33.1 97.78 226 195 C3 -33.3 97.83 227 196 C4 -33.5 97.88 228 197 C5 -33.7 97.92 229 198 C6 -33.9 97.97 230 199 C7 -34.1 98.02 231 ...
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... LDS8160 Warranty and Use IXYS CORP. MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITAB ILITY 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 ...