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AS3682-EA2 Datasheet(PDF) 5 Page - ams AG |
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AS3682-EA2 Datasheet(HTML) 5 Page - ams AG |
5 / 43 page AS3682 austriamicrosystems Data Sheet www.austriamicrosystems.com Revision 2.21 5 - 43 Table of Contents 1 General Description ................................................................................................................................ 1 2 Key Features .......................................................................................................................................... 1 3 Applications ............................................................................................................................................ 1 4 Block Diagram ........................................................................................................................................ 2 5 Application Diagrams .............................................................................................................................. 2 6 Characteristics ........................................................................................................................................ 6 6.1 Absolute Maximum Ratings (Non-Operating) .................................................................................................. 6 6.2 Operating Conditions ....................................................................................................................................... 6 6.3 Electrical Characteristics ................................................................................................................................. 7 7 Typical Operation Characteristics ........................................................................................................... 9 8 Detailed Functional Descriptions .......................................................................................................... 11 8.1 Charge Pump ................................................................................................................................................ 11 8.1.1 Intelligent Adaptive Mode Switching (IAMS) ....................................................................................... 11 8.1.2 Soft Start ............................................................................................................................................. 11 8.1.3 Open LED Detection ........................................................................................................................... 11 9 Mode Settings ....................................................................................................................................... 12 10 Hard Flash Modes .............................................................................................................................. 14 10.1 Hard Flash Mode 1 ...................................................................................................................................... 15 10.2 Hard Flash Mode 2 ...................................................................................................................................... 17 11 Normal and Soft Flash Modes ............................................................................................................ 19 11.1 Current Settings in Normal Mode ................................................................................................................ 20 11.2 Current Settings in Soft Flash Mode ............................................................................................................ 23 11.3 Timing Control of CURR11, CURR12, CURR13 in Normal Mode and Soft Flash Mode ................................ 24 11.4 Control of CURR2, CURR3, CURR4 in Normal Mode and Soft Flash Mode ................................................ 29 11.5 Charge Pump Control Registers ................................................................................................................. 30 11.6 General Purpose Inputs/Outputs ................................................................................................................. 31 11.7 Power-On Reset .......................................................................................................................................... 32 11.8 Temperature Supervision ............................................................................................................................. 32 11.9 Serial Interface ............................................................................................................................................. 33 11.9.1 Features ............................................................................................................................................ 33 11.9.2 Device Address Selection ................................................................................................................. 33 11.9.3 Data Transfer Formats ...................................................................................................................... 33 11.9.4 Fixed ID Register .............................................................................................................................. 35 11.10 Register Map ............................................................................................................................................. 36 12 External Components ......................................................................................................................... 37 12.1 Capacitor and Resistor Selection ................................................................................................................ 37 12.2 Usage of PCB Wire Inductance ................................................................................................................... 37 12.3 External Component Specifications ............................................................................................................. 37 13 Pinout and Packaging ......................................................................................................................... 38 13.1 Hard Flash Modes Pin Descriptions .............................................................................................................. 38 13.2 Normal Mode and Soft Flash Mode Pin Descriptions .................................................................................. 39 13.3 Package Drawings and Markings ................................................................................................................ 40 14 Ordering Information ........................................................................................................................... 42 |
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