Datasheet

+
PACK
-
V
SYS
Host
-
Controlled
Switch
PACK
+
SCL
SDA
CSOUT
CSIN
PGND
SW
I
2
CBUS
VAUX
HOST
SCL
SDA
STAT
VREF
STAT
PMID
VBUS
C
IN
V
BUS
C
IN
1 Fm
BOOT
ISEL
U1
AUXPWR
C
VREF
C
O
C
BOOT
R
SNS
C
CSIN
1 Fm
C
AUXPWR
C
CSOUT
ISEL
10nF
68mW
V
OUT
4.7 Fm
10kW
10kW
10kW
10kW
10kW
LO1.0 Hm
0.1 Fm
10 Fm
0.1 Fm
1 Fm
bq24155
Host
Charge
Controller
Q
SGND
VBUS
2V/div
I
0.5 A/div
BAT
500 S/divm
Vbus=0–5V,Vbat=3.5VChargemode
VSW
5V/div
VBAT
2V/div
VSW
5V/div
I
0.5 A/div
BAT
1S/div
Vbus=5V,Iin_limit=500mA,
32SMode
VSW
2V/div
IL
0.5 A/div
Vbus=5V Vbat=2.6V,Voreg=4.2V,Ichg=1250mA,
100nS/div
VBUS
2V/div
VSW
5V/div
I
0.1 A/div
BUS
2mS/div
Vbus=5V@10mA,Iin_limit=100mA,
Vbat=3.2V,Ichg=550mA
bq24155
www.ti.com SLUS942 –FEBRUARY 2010
TYPICAL APPLICATION CIRCUITS (continued)
Figure 2. I
2
C Controlled 1-Cell Pre-Regulator Application
TYPICAL CHARACTERISTICS
Using circuit shown in Figure 1, T
A
= 25°C, unless otherwise specified.
ADAPTER INSERTION BATTERY INSERTION/REMOVAL
Figure 3. Figure 4.
PWM CHARGING WAVEFORMS POOR SOURCE DETECTION
Figure 5. Figure 6.
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