BQ24180 Datasheet, PDF (10/39 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and Accessory Power Connection

bq24180
SLUSA02 A – FEBRUARY 2010 – REVISED FEBRUARY 2010
TYPICAL CHARACTERISTICS
V_VBUS
5 V/div
V_BAT
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2 V/div
V_BAT
I_OUT
2 V/div
500 mA/div
I_OUT
200 mA/div
V_{INT/ STAT}
t -Time - 4 ms/div
Figure 3. Adapter Insertion
5 V/div
V_{INT/ STAT}
“No Battery” Fault Interrupt
t -Time - 2 s/div
Figure 4. Battery Insertion/Removal
5 V/div
V_VBUS
5 V/div
V_BAT
2 V/div
I_OUT
500 mA/div
V_{INT/ STAT}
t -Time - 4 ms/div
Figure 5. PWM Charging Waveforms
5 V/div
V_VBUS
1 V/div
V_VBUS
I_VBUS
V_VBUS < 3.8 V
1 V/div
20 mA/div
V_{INT/ STAT}
"Faulty Adapter" Fault Interrupt
t -Time - 4 ms/div
Figure 6. Faulty Adapter Detection
2 V/div
V_VBUS = 5 V,
V_BAT = 3.6 V
V_SW
2 V/div
I_VBUS
20 mA/div
V_{INT/ STAT}
"Faulty Adapter" Fault Interrupt
t -Time - 1 s/div
Figure 7. Faulty Adapter Detection
(Showing Continuous Detection)
2 V/div
I_L
500 mA/div
t -Time - 2 ms/div
Figure 8. Cycle by Cycle Current Limit
10
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