BQ24157 Datasheet, PDF (8/39 Pages) Texas Instruments – Fully Integrated Switch-Mode Charger With USB Compliance and USB-OTG Support

bq24157
SLUSB80 – SEPTEMBER 2012
TYPICAL APPLICATION CIRCUITS
V_BUS = 5 V, I_CHARGE = 1250 mA, VBAT = 3.5 V to 4.44 V (Adjustable).
V_BUS
C_IN
1 mF
VBUS
SW
U1
bq24157
VAUX
PMID
CIN ^{4.7 mF}
10 kW
10 kW 10 kW
SCL
SDA
STAT
10 kW
I2C BUS
SLRST
10 kW
HOST
CD
10 kW
SCL
SDA
STAT
SLRST
CD
BOOT
PGND
CSIN
CSOUT
VREF
L_O 1.0 mH
R_SNS
C_BOOT
33 nF
C_CSIN
0.1 mF
C_VREF
1 mF
C_CSOUT
0.1 mF
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C_O1
22 mF
V_BAT
C_O2
33 mF
PACK+
+
PACK–
Figure 2. I²C Controlled 1-Cell USB Charger Application Circuit with USB OTG Support.
8
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