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Revision 1.03

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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