BQ24190_15 Datasheet, PDF (31/52 Pages) Texas Instruments – bq2419x I2C Controlled 4.5-A Single Cell USB/Adapter Charger with Narrow VDC Power Path Management and USB OTG

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bq24190, bq24192, bq24192I
SLUSAW5B – JANUARY 2012 – REVISED DECEMBER 2014
9.5.1.3 Charge Current Control Register REG02 (bq24190, bq24192 reset = 01100000, or 60; bq24192I
reset = 00100000, or 20)
Figure 28. REG02 Charge Current Control Register Format
7
6
5
4
ICHG[5]
ICHG[4]
ICHG[3]
ICHG[2]
R/W
R/W
R/W
R/W
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
3
ICHG[1]
R/W
2
ICHG[0]
R/W
1
Reserved
R/W
0
FORCE_20PCT
R/W
Table 10. REG02 Charge Current Control Register Description
BIT FIELD
Fast Charge Current Limit
Bit 7 ICHG[5]
Bit 6 ICHG[4]
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ICHG[3]
ICHG[2]
ICHG[1]
ICHG[0]
Reserved
FORCE_20PCT
TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RESET
0
0: (bq24192I)
1: (bq24190/92)
1
0
0
0
0
0
DESCRIPTION
NOTE
2048 mA
1024 mA
512 mA
256 mA
Offset: 512 mA
Range: 512 to 4544 mA
Default:
bq24190, bq24192: 2048 mA (011000),
bq24192I: 1024 mA (001000)
128 mA
64 mA
0 - Reserved
Reserved. Must write "0"
0 - ICHG as REG02[7:2] (Fast Charge
Current Limit) and REG03[7:4] (Pre-
Charge Current Limit) programmed
1 - ICHG as 20% of REG02[7:2] (Fast
Charge Current Limit) and 50% of
REG03[7:4] (Pre-Charge Current Limit)
programmed
Default: ICHG as REG02[7:2] (Fast Charge
Current Limit) and REG03[7:4] (Pre-Charge
Current Limit) programmed (0)
9.5.1.4 Pre-Charge/Termination Current Control Register REG03 (reset = 00010001, or 11)
Figure 29. REG03 Pre-Charge/Termination Current Control Register Format
7
6
5
4
IPRECHG[3] IPRECHG[2] IPRECHG[1] IPRECHG[0]
R/W
R/W
R/W
R/W
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
3
ITERM[3]
R/W
2
ITERM[2]
R/W
1
ITERM[1]
R/W
0
ITERM[0]
R/W
Table 11. REG03 Pre-Charge/Termination Current Control Register Description
BIT FIELD
Pre-Charge Current Limit
Bit 7 IPRECHG[3]
Bit 6 IPRECHG[2]
Bit 5 IPRECHG[1]
Bit 4 IPRECHG[0]
Termination Current Limit
Bit 3 ITERM[3]
Bit 2 ITERM[2]
Bit 1 ITERM[1]
Bit 0 ITERM[0]
TYPE RESET
R/W 0
R/W 0
R/W 0
R/W 1
R/W 0
R/W 0
R/W 0
R/W 1
DESCRIPTION
1024 mA
512 mA
256 mA
128 mA
1024 mA
512 mA
256 mA
128 mA
NOTE
Offset: 128 mA,
Range:
bq24190, bq24192: 128 mA to 2048 mA
bq24192I: 128 mA to 640 mA(0100)
Default: 256 mA (0001)
Offset: 128 mA
Range: 128 mA to 2048 mA
Default: 256 mA (0001)
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