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BD71815AGW Datasheet(PDF) 2 Page - Rohm |
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BD71815AGW Datasheet(HTML) 2 Page - Rohm |
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2 / 107 page  2/103 TSZ02201-0Q4Q0AB00610-1-2 © 2016 ROHM Co., Ltd. All rights reserved. 5.Oct.2016 Rev.001 www.rohm.com TSZ22111・15・001 BD71815AGW Contents General Description ........................................................................................................................................................................1 Features..........................................................................................................................................................................................1 Applications ....................................................................................................................................................................................1 Key Specifications...........................................................................................................................................................................1 Package W(Typ) x D(Typ) x H(Max).........................................................................................................................1 Contents .........................................................................................................................................................................................2 Typical Application Circuit ...............................................................................................................................................................3 Block Diagram ................................................................................................................................................................................4 Pin Configuration ............................................................................................................................................................................5 Pin Descriptions..............................................................................................................................................................................6 PCB Layout Recommendations......................................................................................................................................................8 Description of Blocks ......................................................................................................................................................................9 1. High Efficiency Buck Converters (BUCK1 – 5) and LDOs....................................................................................................9 2. Power ON/OFF Sequence ................................................................................................................................................. 11 3. States of Operation ............................................................................................................................................................12 4. Dynamic Voltage Scaling (DVS) Control ............................................................................................................................14 5. LDO4 and LDO5 Control (for SD Card)..............................................................................................................................15 6. Real Time Clock (RTC) Block.............................................................................................................................................16 7. Over Voltage Protection (OVP) Block.................................................................................................................................21 8. Battery Charger Block ........................................................................................................................................................21 9. Coulomb Counter Block .....................................................................................................................................................25 10. 12-bit ADC (SAR) Block .....................................................................................................................................................26 11. Battery Monitor Block .........................................................................................................................................................26 12. White LED Boost Converter ...............................................................................................................................................27 13. I2C Bus Interface Block......................................................................................................................................................27 14. Interrupt Handling...............................................................................................................................................................31 Absolute Maximum Ratings (Ta=25°C) .........................................................................................................................................32 Thermal Resistance (Note 1) .............................................................................................................................................................32 Recommended Operating Conditions...........................................................................................................................................32 Electrical Characteristics...............................................................................................................................................................33 Register Map ................................................................................................................................................................................42 Typical Performance Curves.........................................................................................................................................................87 I/O Equivalent Circuits ..................................................................................................................................................................95 Operational Notes.........................................................................................................................................................................98 Ordering Information...................................................................................................................................................................101 Marking Diagrams.......................................................................................................................................................................101 Physical Dimension Tape and Reel Information..........................................................................................................................102 Revision History..........................................................................................................................................................................103 |
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