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SP7614A датащи(PDF) 10 Page - Sipex Corporation |
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SP7614A датащи(HTML) 10 Page - Sipex Corporation |
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10 / 14 page ![]() Apr20-07 RevS SP7611A/7612A/7614A Low Dropout Linear LED driver 2007 Sipex Corporation Page 10 LED Brightness Control The SP761X LED Drivers feature analog and PWM controls to give designers flexible brightness control. To determine the value of RSET , use the "ISET vs. VCRTL" graph under the Typical Performance Characteristics. 1. SP761X/A - Analog using VCONTROL Set VCONTROL and RSET for LED current SETTING THE LED CURRENT – page 8 - PWM - Vcontrol -Amplitude of PWM signal sets maximum LED current -Pulse width controls current between 0 and maximum LED Set current - PWM using Enable - Set VCONTROL and RSET for LED current SETTING THE LED CURRENT – page 6 ENABLE = PWM -Amplitude has no effect on current -Pulse width controls current between 0 and maximum LED set current APPLICATION INFORMATION |
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