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BQ24153 Просмотр технического описания (PDF) - Texas Instruments

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BQ24153 Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support TI
Texas Instruments TI
BQ24153 Datasheet PDF : 41 Pages
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bq24153
bq24156, bq24158
SLUSA27 – MARCH 2010
VBUS
2 V/div
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
POOR SOURCE DETECTION
CHARGE CURRENT RAMP UP
VSW
5 V/div
www.ti.com
VSW
2 V/div
IBUS
20 mA/div
10 mS/div
Figure 9. VBUS = 5 V @ 8 mA, VBAT = 3.2V, Iin_limit = 100 mA,
Ichg = 550 mA
INPUT CURRENT CONTROL (bq24153/8)
OTG
2 V/div
15 Minute Mode
32 S Mode
IBAT
200 mA/div
500 mS/div
Figure 10. Vin = 5 V, Vbat = 3. 2V, No input current limit,
ICHG=1550mA
VIN BASED DPM
VBUS
1 V/div
IBAT
0.1 A/div
IBUS
0.2 A/div
Write Command
1 S/div
Figure 11. VBUS = 5 V, VBAT = 3.1V, Iin_limit = 100/500 mA,
(OTG control, 15 minute mode), Iin_limit = 100 mA (I2C control,
32 second Mode)
0.5 mS/div
Figure 12. VBUS = 5 V @ 500 mA, VBAT = 3.5V, ICHG = 1550 mA,
VIN_DPM = 4.52 V
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 13.
BOOST WAVEFORM (PWM MODE)
VBUS
10 mV/div,
5.05 V Offset
VBAT
10 mV/div,
3.5 V Offset
VSW
2V/div
IL
100 mA/div
100 nS/div
Figure 14. VBUS = 5.05 V, VBAT = 3.5V, IBUS = 217 mA
10
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