AXP209 datasheet(2/45 Pages) ETC2

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AXP209

Enhanced single Cell Li-Battery and Power System Management IC

Table of Contents

1. Overview ........................................................................................................................................3

2. Features .........................................................................................................................................4

3. Typical Application........................................................................................................................5

4. Absolute Maximum Ratings .........................................................................................................6

5. Electrical Characteristics................................................................................................................6

6. Typical Characteristics...................................................................................................................9

7. Pin Definition............................................................................................................................... 12

8. Functional Block Diagram........................................................................................................... 14

9. Control and Operation................................................................................................................ 15

9.1 Power On / Off & Reset..................................................................................................... 15

9.2 Power path management (IPS).......................................................................................... 17

9.3 Adaptive PWM Charger ..................................................................................................... 19

9.4 Backup battery ...................................................................................................................22

9.5 Multi-channel power outputs............................................................................................23

9.6 Default Voltage / Timing Settings..................................................................................... 24

9.7 Signal Acquisition System .................................................................................................25

9.8 Multifunction Pin Description ........................................................................................... 25

9.9 Timer ................................................................................................................................... 25

9.10 Decryption ........................................................................................................................26

9.11 HOST Interface and interrupt(TWSI and IRQ).................................................................26

9.12 Register.............................................................................................................................28

10. Package...............................................................................................................................................................45

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