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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LP8545 датащи(PDF) 33 Page - Texas Instruments |
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LP8545 датащи(HTML) 33 Page - Texas Instruments |
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33 / 44 page  LP8545 www.ti.com SNVS635D – APRIL 2010 – REVISED DECEMBER 2013 EEPROM Bit Explanations EEPROM Default Values ADDR LP8545SQX A0H 0111 1111 A1H 1011 0101 A2H 1010 1111 A3H 0111 1011 A4H 0010 1000 A5H 1100 1111 A6H 0110 0100 A7H 0010 1101 EEPROM Address 0 Address A0h EEPROM ADDRESS 0 register 7 6 5 4 3 2 1 0 CURRENT[7:0] Name Bit Access Description CURRENT 7:0 R/W Backlight current adjustment. If EN_I_RES = 0 the maximum backlight current is defined only with these bits as described below. If EN_I_RES = 1, then the external resistor connected to ISET pin also scales the LED current. With 16 k Ω resistor and CURRENT set to 7FH the output current is then 23 mA. EN_I_RES = 0 EN_I_RES = 1 0000 0000 0 mA 0 mA 0000 0001 0.12 mA (1/255) x 600 x 1.23V/RISET 0000 0010 0.24 mA (2/255) x 600 x 1.23V/RISET ... ... ... 0111 1111 (default) 15.00 mA (127/255) x 600 x 1.23V/RISET ... ... ... 1111 1101 29.76 mA (253/255) x 600 x 1.23V/RISET 1111 1110 29.88 mA (254/255) x 600 x 1.23V/RISET 1111 1111 30.00 mA (255/255) x 600 x 1.23V/RISET EEPROM Address 1 Address A1h EEPROM ADDRESS 1 register 7 6 5 4 3 2 1 0 BOOST_FREQ[1:0] EN_LED_FAULT TEMP_LIM[1:0] SLOPE[2:0] Name Bit Access Description BOOST_FREQ 7:6 R/W Boost Converter Switch Frequency 00 = 156 kHz 01 = 312 kHz 10 = 625 kHz 11 = 1250 kHz EN_LED_FAULT 5 R/W Enable LED fault detection 0 = LED fault detection disabled 1 = LED fault detection enabled Copyright © 2010–2013, Texas Instruments Incorporated Submit Documentation Feedback 33 Product Folder Links: LP8545 |
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