BQ24153A_14 Datasheet, PDF (10/46 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support

bq24153A, bq24156A
bq24158, bq24159
SLUSAB0C – OCTOBER 2010 – REVISED JULY 2013
VBUS
2 V/div
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
POOR SOURCE DETECTION
CHARGE CURRENT RAMP UP
VSW
5 V/div
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VSW
2 V/div
I_BUS
20 mA/div
10 mS/div
Figure 10. VBUS = 5 V at 8 mA, V_BAT = 3.2V,
Iin_limit = 100 mA, I_CHG = 550 mA
INPUT CURRENT CONTROL (bq24153A/8)
OTG
2 V/div
15 Minute Mode
32 S Mode
I_BAT
200 mA/div
500 mS/div
Figure
11.
Vin
=
5
V,
VI_CBHAGT
=
=
3. 2V, No
1550mA
Input
Current
Limit,
VIN BASED DPM
VBUS
1 V/div
I_BAT
0.1 A/div
Write Command
1 S/div
Figure 12. VBUS = 5 V, V_BAT = 3.1V, Iin_limit = 100/500 mA,
(OTG Control, 15 Minute Mode), Iin_limit = 100 mA
(I²C Control, 32 Second Mode)
CHARGER EFFICIENCY
94
93
92
Vbat = 4.2 V
91
Vbat = 3.6 V
90
89
88
87
86
85
Vbat = 3 V
84
83
82
81
80
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5
Charge Current - A
Figure 14.
IBUS
0.2 A/div
0.5 mS/div
Figure 13. VBUS = 5 V at 500 mA, V_BAT = 3.5V,
I_CHG = 1550 mA,
V_{IN_DPM} = 4.52 V
VBUS
10 mV/div,
5.05 V Offset
VBAT
10 mV/div,
3.5 V Offset
VSW
2V/div
BOOST WAVEFORM (PWM MODE)
IL
100 mA/div
100 nS/div
Figure 15. VBUS = 5.05 V, V_BAT = 3.5V, I_BUS = 217 mA
10
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