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AS3608-BQFP Datasheet(PDF) 4 Page - ams AG |
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AS3608-BQFP Datasheet(HTML) 4 Page - ams AG |
4 / 68 page www.austriamicrosystems.com Revision 1.03 3 - 67 AS3608 2v2 Data Sheet - C o n t e n t s Contents 1 General Description .................................................................................................................................................................. 1 2 Key Features............................................................................................................................................................................. 1 3 Application ................................................................................................................................................................................ 1 4 Pin Assignments ....................................................................................................................................................................... 5 4.1 Pin Descriptions.................................................................................................................................................................................... 5 5 Absolute Maximum Ratings ...................................................................................................................................................... 7 6 Electrical Characteristics........................................................................................................................................................... 8 7 Typical Operating Characteristics ........................................................................................................................................... 10 8 Detailed Description - Power Management Functions............................................................................................................ 11 8.1 Low Drop Out Regulators................................................................................................................................................................... 11 8.1.1 LDO5 ......................................................................................................................................................................................... 11 8.1.2 LDO 1, LDO2, LDO3 & LDO4.................................................................................................................................................... 12 8.1.3 Parameter.................................................................................................................................................................................. 12 8.2 DCDC Step-Down Converter.............................................................................................................................................................. 14 8.2.1 Functional Description ............................................................................................................................................................... 15 8.2.2 Parameter.................................................................................................................................................................................. 16 8.3 30V Step-Up DCDC Converter........................................................................................................................................................... 18 8.3.1 Voltage Feedback and OV Protection ....................................................................................................................................... 18 8.3.2 Voltage Feedback...................................................................................................................................................................... 18 8.3.3 DLS & Dimming ......................................................................................................................................................................... 19 8.3.4 Current Sinks ............................................................................................................................................................................. 19 8.3.5 Parameter.................................................................................................................................................................................. 19 8.4 Charger............................................................................................................................................................................................... 21 8.4.1 Soft Charge/Trickle Charge ....................................................................................................................................................... 22 8.4.2 End of Charge Detection ........................................................................................................................................................... 22 8.4.3 VSUPSW and Temperature Supervision................................................................................................................................... 22 8.4.4 Battery Temperature Supervision .............................................................................................................................................. 22 8.4.5 No Battery Detection.................................................................................................................................................................. 22 8.4.6 Charger Modes .......................................................................................................................................................................... 23 8.4.7 Parameter .................................................................................................................................................................................. 23 9 Detailed Description - SYSTEM Functions ............................................................................................................................. 25 9.1 SYSTEM ............................................................................................................................................................................................ 25 9.1.1 Power Up/Down Conditions ....................................................................................................................................................... 25 9.1.2 Start-up Sequence ..................................................................................................................................................................... 25 9.2 Hibernation ......................................................................................................................................................................................... 26 9.3 Supervisor .......................................................................................................................................................................................... 26 9.3.1 VSUP Supervision ..................................................................................................................................................................... 26 9.3.2 VDD27 Supervision ................................................................................................................................................................... 26 9.3.3 Junction Temperature Supervision ............................................................................................................................................ 26 9.3.4 Power Rail Monitoring ................................................................................................................................................................ 26 9.4 Interrupt Generation ........................................................................................................................................................................... 27 9.4.1 IRQ Source Interpretation .......................................................................................................................................................... 27 9.4.2 Interrupt Sources ....................................................................................................................................................................... 27 9.5 10-Bit ADC ......................................................................................................................................................................................... 28 9.5.1 Input Sources ............................................................................................................................................................................. 28 |
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