BQ24180 Datasheet, PDF (11/39 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and Accessory Power Connection

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V_SW
bq24180
SLUSA02 A – FEBRUARY 2010 – REVISED FEBRUARY 2010
TYPICAL CHARACTERISTICS (continued)
2 V/div
V_SW
2 V/div
V_BAT
1 V/div
I_VBUS
200 mA/div
t -Time - 400 ms/div
Figure 9. Input Current Limit Transition
USB500 to USB100
V_BAT
I_VBUS
1 V/div
200 mA/div
t -Time - 400 ms/div
Figure 10. Input Current Limit Transition
USB100 to USB500
V_SW
2 V/div
V_BAT
I_VBUS
1 V/div
200 mA/div
t -Time - 400 ms/div
Figure 11. Input Current Limit Transition
USB500 to 750mA
V_VBUS
V_BAT
2 V/div
1 V/div
I_VBUS
Faulty Adapter
Detection
50 mA/div
t -Time - 10 ms/div
Figure 13. Startup Into Default Mode
No Battery Connected
V_SCL
1 V/div
I_OUT
200 mA/div
t -Time - 200 ms/div
Figure 12. Charge Current Transition
550mA to 1.05A Using I²C
V_PSEL
V_BAT
I_VBUS
2 V/div
1 V/div
200 mA/div
t -Time - 1 ms/div
Figure 14. PSEL Transition
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