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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LP8551TLX/NOPB датащи(PDF) 29 Page - Texas Instruments |
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LP8551TLX/NOPB датащи(HTML) 29 Page - Texas Instruments |
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29 / 46 page  LP8551 www.ti.com SNVS673E – APRIL 2010 – REVISED SEPTEMBER 2014 8.6.2 EEPROM Bit Explanations 8.6.2.1 EEPROM Register Map ADD REGIST D7 D6 D5 D4 D3 D2 D1 D0 R ER A0H eeprom CURRENT[7:0] addr 0 A1H eeprom BOOST_FREQ[1:0] EN_LED_FAULT TEMP_LIM[1:0] SLOPE[2:0] addr 1 A2H eeprom ADAPTIVE_SPEED[1:0] ADV_SLOPE EN_ADAPT EN_BOOST BOOST_IMAX addr 2 A3H eeprom UVLO[1:0] EN_PSPWM PWM_FREQ[4:0] addr 3 A4H eeprom PWM_RESOLUTION[1:0] EN_I_RES LED_FAULT_THR DRV_HEADR[2:0] addr 4 A5H eeprom VBOOST[4:0] addr 5 A6H eeprom addr 6 A7H eeprom EN_F_RES HYSTERESIS[1:0] addr 7 8.6.2.2 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 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 Copyright © 2010–2014, Texas Instruments Incorporated Submit Documentation Feedback 29 Product Folder Links: LP8551 |
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