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MP3388 Folha de dados(PDF) 8 Page - Monolithic Power Systems |
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MP3388 Folha de dados(HTML) 8 Page - Monolithic Power Systems |
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8 / 14 page ![]() MP3388- 50V, 8-STRING WHITE LED DRIVERS MP3388 Rev. 1.0 www.MonolithicPower.com 8 12/16/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. FUNCTION DIAGRAM Control Logic + - Current Sense Amplifier + - PWM Comparator Oscillator + - 1.23V OV Comparator + - + - LED1 + - DPWM Oscillator DPWM Comparator 400k? 1.2V 0.2V Current Control 1.22V Max Min Feedback Control 5.5V EA LED OV Comparator Short String Protection Regulator LED8 OVP PGND GND VIN VCC SW PWMO PWMI FSET ISET COMP OSC VFAULT EN Enable Control 600mV Figure 1—MP3388 Function Diagram |
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