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LDS8680 Datasheet(PDF) 4 Page - IXYS Corporation |
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LDS8680 Datasheet(HTML) 4 Page - IXYS Corporation |
4 / 12 page ![]() LDS8680 © 2009 IXYS Corp. 4 Doc. No. 8680_DS, Rev. N1.0 Characteristics subject to change without notice LED CURRENT SETTING COMMANDS Command Value Binary Hex Command Description 0000 0000 0000 0001 00 01 Turn LEDA “ON” with LED current at factory preset maximum value, Safety Timer is “ON” 0000 0000 0000 0010 00 02 Turn LEDB “ON” with LED current at factory preset maximum value, Safety Timer is “ON” 0000 0000 0000 0011 00 03 Turn LEDA and LEDB “ON” with LED current at factory preset maximum value, Safety Timer is “ON” 0000 0100 000Y YYYY 04 ZZ Turn LEDA “ON” with LED current other than factiry programmed value. Binary code Y YYYY is determined as desired LED current value in mA divided by 25.6 mA minus 1. Safety Timer is “ON” Example: Binary Code to set 540 mA current is equal (540/25.6 – 1) = 20 (dec) = 1 0100 (bin) = 14 (hex) Because LSB value is 25.6 mA, LED current can be set with this resolution only. 0000 0110 000Y YYYY 0000 0010 0000 0001 06 ZZ 02 01 Set of two commands to program LEDA current as above, but Safety Timer is “OFF” 0000 1000 0000 YYYY 08 0Z Turn LEDB “ON” with LED current other than factiry programmed value. Binary code YYYY is determined as desired LED current value in mA divided by 25.6 mA minus 1. Safety Timer is “ON” Example: Binary Code to set 307 mA current is equal (307/25.6 – 1) = 11 (dec) = 1011 (bin) = B (hex) Because LSB value is 25.6 mA, LED current can be set with this resolution only. 0000 1010 0000 YYYY 0000 0010 0000 0010 0A 0Z 02 02 Set of two commands to program LEDB current as above, but Safety Timer is “OFF” |
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