BQ25890H Datasheet, PDF (19/66 Pages) Texas Instruments – I2C Controlled Single Cell 5-A Fast Charger

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BQ25890H
SLUSCC5 – SEPTEMBER 2016
Table 1. Non-Standard Adapter Detection
NON-STANDARD
ADAPTER
Divider 1
Divider 2
Divider 3
Divider 4
D+ THRESHOLD
V_D+ within V_{2P7_VTH}
V_D+ within V_{1P2_VTH}
V_D+ within V_{2P0_VTH}
V_D+ within V_{2P7_VTH}
D- THRESHOLD
V_D- within V_{2P0_VTH}
V_D- within V_{1P2_VTH}
V_D- within V_{2P7_VTH}
V_D- within V_{2P7_VTH}
INPUT CURRENT LIMIT
2.1A
2A
1A
2.4A
Table 2. Adjustable High Voltage Adapter D+/D- Output Configurations
ADJUSTABLE HIGH VOLTAGE HANDSHAKE
MaxCharge (12V)
MaxCharge (9V)
D+
I_{1P6MA_ISINK}
V_{3p45_VSRC}
D-
V_{3p45_VSRC}
I_{1P6MA_ISINK}
OUTPUT
12 V
9V
After the Input Source Type Detection is done, an INT pulse is asserted to the host. In addition, the following
registers including Input Current Limit register (IINLIM), VBUS_STAT, and SDP_STAT are updated as below:
D+/D- DETECTION
USB SDP (USB500)
USB CDP
USB DCP
Divider 3
Divider 1
Divider 4
Divider 2
MaxCharge
Unknown Adapter
Table 3. bq25890H Result
INPUT CURRENT LIMIT
(IINLIM)
500 mA
1.5 A
3.25 A
1A
2.1 A
2.4 A
2A
1.5 A
500 mA
SDP_STAT
1
1
1
1
1
1
1
1
1
VBUS_STAT
001
010
011
110
110
110
110
100
101
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