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AS3693B1-ZMFT Datasheet(PDF) 4 Page - ams AG |
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AS3693B1-ZMFT Datasheet(HTML) 4 Page - ams AG |
4 / 34 page AS3693B1 austriami crosyst ems www.austriamicrosystems.com Revision 1.26 / 2011-04-02 3 - 33 Table of Contents 1 General Description ....................................................................................................................................... 1 2 Key Features.................................................................................................................................................. 1 3 Applications.................................................................................................................................................... 1 4 Block Diagram................................................................................................................................................ 2 5 Characteristics ............................................................................................................................................... 4 5.1 Absolute Maximum Ratings .................................................................................................................... 4 5.2 Operating Conditions .............................................................................................................................. 5 5.3 Electrical Characteristics......................................................................................................................... 5 6 Typical Operation Characteristics .................................................................................................................. 8 6.1 Output current vs Output Voltage ........................................................................................................... 8 6.2 Vsupply vs VREG and V2.5 at startup .................................................................................................... 8 6.3 9us Slew Rate......................................................................................................................................... 9 6.4 Supply Regulation................................................................................................................................... 9 7 Block Description ......................................................................................................................................... 10 7.1 Feedback Circuit................................................................................................................................... 10 7.1.1 Feedback Selection ....................................................................................................................... 12 7.1.2 Voltage fault registers .................................................................................................................... 13 7.2 Curreg 1-16........................................................................................................................................... 13 7.3 PWM – modes ...................................................................................................................................... 15 7.3.1 SYNC mode (PWM_MODE = 00).................................................................................................. 15 7.3.2 ASYNC – mode (PWM_MODE = 01) ............................................................................................ 17 7.4 PWM – high time, period and delay registers ....................................................................................... 18 7.5 Shunt Regulator.................................................................................................................................... 19 7.5.1 Undervoltage lockout ..................................................................................................................... 19 7.6 Over temperature control ...................................................................................................................... 19 7.7 Device address setup ........................................................................................................................... 20 7.7.1 I2C Device Address setup ............................................................................................................. 20 7.7.2 SPI Device Address setup ............................................................................................................. 20 7.8 Digital interface ..................................................................................................................................... 21 7.8.1 I2C interface .................................................................................................................................. 21 7.8.2 SPI interface .................................................................................................................................. 23 8 Register map................................................................................................................................................ 25 9 Pinout and Packaging .................................................................................................................................. 28 9.1 Pinout.................................................................................................................................................... 28 9.2 Package drawing MLF64 ...................................................................................................................... 30 9.3 Package drawing LQFP64 .................................................................................................................... 31 10 Ordering Information .................................................................................................................................... 32 Copyright............................................................................................................................................................. 33 Disclaimer ........................................................................................................................................................... 33 Contact Information............................................................................................................................................. 33 |
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