BQ24196_17 Datasheet, PDF (30/50 Pages) Texas Instruments – I2C Controlled 2.5-A Single Cell USB/Adapter Charger with Narrow VDC Power Path Management and USB OTG

bq24196
SLUSB98A – OCTOBER 2012 – REVISED DECEMBER 2014
8.5.1.5 Charge Voltage Control Register REG04 (reset = 11001010, or CA)
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Figure 29. REG04 Charge Voltage Control Register Format
7
6
5
4
VREG[5]
VREG[4]
VREG[3]
VREG[2]
R/W
R/W
R/W
R/W
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
3
VREG[1]
R/W
2
VREG[0]
R/W
1
BATLOWV
R/W
0
VRECHG
R/W
Table 11. REG04 Charge Voltage Control Register Description
BIT FIELD
TYPE RESET
DESCRIPTION
Charge Voltage Limit
Bit 7 VREG[5]
R/W 1
512 mV
Bit 6 VREG[4]
R/W 1
256 mV
Bit 5 VREG[3]
R/W 0
128 mV
Bit 4 VREG[2]
R/W 0
64 mV
Bit 3 VREG[1]
R/W 1
32 mV
Bit 2 VREG[0]
R/W 0
16 mV
Battery Precharge to Fast Charge Threshold
Bit 1 BATLOWV
R/W 1
0 – 2.8 V, 1 – 3.0 V
Battery Recharge Threshold (below battery regulation voltage)
Bit 0 VRECHG
R/W 0
0 – 100 mV, 1 – 300 mV
NOTE
Offset: 3.504 V
Range: 3.504 V to 4.400 V (111000)
Default: 4.208 V (101100) Default: 4.304 V
(110010)
Default: 3.0 V (1)
Default: 100 mV (0)
8.5.1.6 Charge Termination/Timer Control Register REG05 (reset = 10011010, or 9A)
Figure 30. REG05 Charge Termination/Timer Control Register Format
7
6
5
4
EN_TERM TERM_STAT WATCHDOG[1] WATCHDOG[0]
R/W
R/W
R/W
R/W
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
3
EN_TIMER
R/W
2
1
CHG_TIMER[1] CHG_TIMER[0]
R/W
R/W
0
Reserved
R/W
Table 12. REG05 Charge Termination/Timer Control Register Description
BIT FIELD
TYPE
Charging Termination Enable
Bit 7 EN_TERM
R/W
Termination Indicator Threshold
Bit 6 TERM_STAT
R/W
RESET
1
0
I2C Watchdog Timer Setting
Bit 5 WATCHDOG[1]
R/W 0
Bit 4 WATCHDOG[0]
R/W 1
Charging Safety Timer Enable
Bit 3 EN_TIMER
R/W 1
Fast Charge Timer Setting
Bit 2 CHG_TIMER[1]
R/W 0
Bit 1 CHG_TIMER[0]
R/W 1
Bit 0 Reserved
R/W 0
DESCRIPTION
NOTE
0 – Disable, 1 – Enable
Default: Enable termination (1)
0 – Match ITERM,
1 – STAT pin high before actual
termination when charge current
below 800 mA
Default Match ITERM (0)
00 – Disable timer, 01 – 40 s,
10 – 80 s, 11 – 160 s
Default: 40 s (01)
0 – Disable, 1 – Enable
Default: Enable (1)
00 – 5 hrs, 01 – 8 hrs, 10 – 12
hrs, 11 – 20 hrs
0 - Reserved
Default: 8 hours (01)
(See Charging Safety Timer for details)
Reserved. Must write "0"
30
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