BQ24188_15 Datasheet, PDF (33/52 Pages) Texas Instruments – bq24188 2A, 30V, Host-Controlled Single-Input, Single Cell Switchmode Li-Ion Battery Charger with Power Path Management and USB-OTG Support

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bq24188
SLUSC44A – DECEMBER 2014 – REVISED MAY 2015
9.6.5 Battery Termination/Fast Charge Current Register (READ/WRITE)
Memory location: 04, Reset state: 0010 1010
Figure 23. Battery Termination/Fast Charge Current Register
B7(MSB)
B6
B5
B4
B3
B2
B1
B0(LSB)
0
0
1
0
1
0
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
BIT
FIELD
TYPE
DESCRIPTION
B7(MSB)
B6
B5
B4
B3
B2
B1
B0(LSB)
I_CHRG4
I_CHRG3
I_CHRG2
I_CHRG1
I_CHRG0
I_TERM2
I_TERM1
I_TERM0
R/W
Charge current 1600mA – (default 0)
R/W
Charge current: 800mA — (default 0)
R/W
Charge current: 400mA —(default 1)
R/W
Charge current: 200mA — (default 0)
R/W
Charge current: 100mA (default 1)
R/W
Termination current sense: 200mA (default 0)
R/W
Termination current sense voltage: 100mA (default 1)
R/W
Termination current sense voltage: 50mA (default 0)
I_CHRG Bits (Charge Current Regulation Threshold setting)
Use I_CHRG bits to set the charge current regulation threshold. The charge current is programmable from
500mA to 2A in 100mA steps. The default is 1A. The I_CHARGE is calculated using the following equation:
indentI_CHARGE = 500 mA + I_CHRGCODE × 100 mA
Any Operation above 2A is not specified.
I_TERM Bits (Charge Current Termination Threshold setting)
Use I_TERM bits to set the charge current termination threshold. The termination threshold is programmable
from 50mA to 300mA in 50mA steps. The default is 150mA. The I_TERM is calculated using the following
equation:
indentI_TERM = 50 mA + I_TERMCODE × 50 mA
Any setting programmed above 300mA selects the 300mA setting.
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