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ADD5203 データシート(PDF) 2 Page - Analog Devices |
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ADD5203 データシート(HTML) 2 Page - Analog Devices |
2 / 24 page ADD5203 Rev. 0 | Page 2 of 24 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Circuit Diagram................................................................................ 3 Specifications..................................................................................... 4 Step-Up Switching Regulator Specifications............................. 4 LED Current Regulation Specifications .................................... 4 SMBus Specifications ................................................................... 5 General Specifications ................................................................. 6 Absolute Maximum Ratings............................................................ 7 Thermal Resistance ...................................................................... 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 Typical Performance Characteristics ............................................. 9 Theory of Operation ...................................................................... 11 Current-Mode, Step-Up Switching Regulator Operation..... 11 Internal 3.3 V Regulator ............................................................ 11 Boost Converter Switching Frequency.................................... 11 Dimming Frequency (fPWM) ...................................................... 11 Current Source............................................................................ 11 Dimming Control Interface ...................................................... 11 PWM Dimming Mode .............................................................. 12 Safety Features ............................................................................ 12 SMBus Interface.......................................................................... 13 SMBus Register Description ..................................................... 15 External Component Selection Guide..................................... 17 Layout Guidelines....................................................................... 18 Typical Application Circuits ......................................................... 20 Outline Dimensions ....................................................................... 23 Ordering Guide .......................................................................... 23 REVISION HISTORY 5/10—Revision 0: Initial Version |
同様の部品番号 - ADD5203 |
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同様の説明 - ADD5203 |
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