1. Overview ....................................................................................................... 1
2. Battery Power Supply Device Performance.................................................. 1
3. CMOS Power Supply Device IC Circuit Technology .................................... 3
3-1 Voltage Detector................................................................................... 3
3-2 Voltage Regulator ................................................................................ 4
3-3 Switching Regulator ............................................................................. 6
3-4 Battery Backup Switching IC................................................................ 9
3-5 Voltage Regulator IC with Reset Function........................................... 9
4. Lithium Ion Secondary Battery..................................................................... 10
4-1 Overview............................................................................................. 10
4-2 Lithium-Ion Secondary Battery Features ........................................... 10
4-3 Lithium-Ion Battery Pack Overview.................................................... 12
5. Lithium-Ion Secondary Battery Protection IC .............................................. 14
5-1 Basic Functions of Lithium-Ion Secondary Battery Protection IC ..... 14
5-2 Normal Condition ............................................................................... 14
5-3 Overcharge Detection ........................................................................ 15
5-4 Overdischarge Detection.................................................................... 16
5-5 Overcurrent Detection ........................................................................ 17
5-6 Conditioning ....................................................................................... 18
5-7 Others................................................................................................. 18
6. Lithium-Ion Secondary Battery Power Circuit.............................................. 20
6-1 One-Cell Battery Power Circuit .......................................................... 20
6-2 Two-Cell Battery Power Circuit .......................................................... 21
6-3 Three-and Four-Cell Battery Power Circuit ....................................... 22
7. Future Trends of Lithium-Ion Secondary Battery Power Supply................. 24
7-1 Future Trends..................................................................................... 24
7-2 Smart Batteries................................................................................... 24
8. Summary...................................................................................................... 35
9. Conclusion ................................................................................................... 37