BQ24292I Datasheet, PDF (16/42 Pages) Texas Instruments – I2C Controlled 4.5A Single Cell USB/Adapter Charger With Narrow VDC Power Path Management and USB OTG

bq24292i
SLUSBI4 – APRIL 2013
I²C Registers
Address: 6BH. REG00-07 support Read and Write. REG08-0A are read only.
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Input Source Control Register REG00 (default 00111000, or 38)
BIT
DESCRIPTION
Bit 7 EN_HIZ
0 – Disable, 1 – Enable
Default: Disable (0)
Input Voltage Limit
Bit 6 VINDPM[3]
Bit 5 VINDPM[2]
640mV
320mV
Offset 3.88V, Range: 3.88V-5.08V
Default: 4.44V (0111)
Bit 4 VINDPM[1] 160mV
Bit 3 VINDPM[0] 80mV
Input Current Limit (Actual input current limit is the lower of I²C and ILIM)
Bit 2
Bit 1
Bit 0
IINLIM[2]
IINLIM[1]
IINLIM[0]
000 – 100mA, 001 – 150mA, 010 – 500mA,
011 – 900mA, 100 – 1.2A, 101 – 1.5A,
110 – 2A, 111 – 3A
Default SDP: 100mA (000)(OTG pin=0) or 500mA (010)
(OTG pin=1)
Default DCP/CDP: 1.5A (101)
Power-On Configuration Register REG01 (default 00011011, or 1B)
BIT
DESCRIPTION
Bit 7 Register Reset
Bit 6 I²C Watchdog
Timer Reset
0 – Keep current register setting,
1 – Reset to default
0 – Normal ; 1 – Reset
Charger Configuration
Bit 5 CHG_CONFIG[1] 00 – Charge Disable, 01 – Charge Battery,
Bit 4 CHG_CONFIG[0] ^{10/11 – OTG}
Minimum System Voltage Limit
Bit 3 SYS_MIN[2]
0.4V
Bit 2 SYS_MIN[1]
0.2V
Bit 1 SYS_MIN[0]
0.1V
Boost Mode Current Limit
Bit 0 BOOST_LIM
0 – 500mA, 1 – 1.3A
NOTE
Default: Keep current register setting (0)
Back to 0 after register reset
Default: Normal (0)
Back to 0 after timer reset
Default: Charge Battery (01)
Offset: 3.0V, Range 3.0V-3.7V
Default: 3.5V (101)
Default: 1.3A (1)
Charge Current Control Register REG02 (default 00100000, or 20)
BIT
DESCRIPTION
Fast Charge Current Limit
Bit 7 ICHG[5]
2048mA
Bit 6 ICHG[4]
1024mA
Bit 5 ICHG[3]
512mA
Bit 4 ICHG[2]
256mA
Bit 3 ICHG[1]
128mA
Bit 2 ICHG[0]
64mA
Bit 1 Reserved
0 - Reserved
Bit 0 FORCE_20PCT
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
NOTE
Offset: 512mA
Range: 512-4544mA
Default: 1024mA (001000)
Default: (0) ICHG as 20% of REG02[7:2] (Fast Charge
Current Limit) and 50% of REG03[7:4] (Pre-Charge
Current Limit) programmed
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