BQ24153A Datasheet, PDF (9/43 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger

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TYPICAL PERFORMANCE CHARACTERISTICS
bq24153A
bq24156A, bq24158
SLUSAB0 – OCTOBER 2010
Using circuit shown in Figure 1, T_A = 25°C, unless otherwise specified.
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ADAPTER INSERTION
CYCLE BY CYCLE CURRENT LIMITING IN CHARGE MODE
VBUS
2 V/div
VSW
2 V/div
VSW
5 V/div
I_BAT
0.5 A/div
10 ms/div
Figure 3. VBUS = 0-5V, Iin_limit = 500mA, Voreg = 4.2V
VBAT = 3.5V, I_CHG = 550mA, 32S mode
BATTERY INSERTION/REMOVAL
VBAT
2 V/div
I_L
0.5 A/div
2 ms/div
Figure 4. VBUS = 5V, V_BAT = 3.5V
Charge Mode Overload Operation
PWM CHARGING WAVEFORMS
VSW
2 V/div
VSW
5 V/div
I_BAT
0.5 A/div
Battery Inserted
Battery Removed
1 S/div
Figure 5. VBUS = 5 V, V_BAT = 3.4V, Iin_limit = 500 mA
(32s Mode)
BATTERY DETECTION AT POWER UP (bq24153A/6A)
VBUS
5 V/div
I_L
0.5 A/div
100 nS/div
Figure 6. VBUS = 5 V, V_BAT = 2.6 V, Voreg = 4.2 V,
I_CHG = 1550 mA
BATTERY DETECTION AT POWER UP (bq24158)
VBUS
4 V/div
VBAT
2 V/div
I_BUS
50 mA/div
100 mS/div
Figure 7. VBUS = 5V, No Battery Connected
VBAT
2 V/div
VSW
5 V/div
IBUS
100 mA/div
100 mS/div
Figure 8. VBUS = 5V, No Battery Connected
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