BQ25703A Datasheet, PDF (40/81 Pages) Texas Instruments – I2C Multi-Chemistry Battery Buck-Boost Charge Controller With System Power Monitor and Processor Hot Monitor

bq25703A
SLUSCU1 – MAY 2017
8.6.1.4 ChargeOption3 Register (I2C address = 35h/34h) [reset = 0h]
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Figure 26. ChargeOption3 Register (I2C address = 35h/34h) [reset = 0h]
15
14
13
12
11
10
9
8
EN_HIZ
RESET_REG
RESET_
VINDPM
EN_OTG
EN_ICO_MOD
E
Reserved
R/W
R/W
R/W
R/W
R/W
R/W
7
6
5
4
3
Reserved
R/W
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
2
1
0
BATFETOFF_ PSYS_OTG_
HIZ
IDCHG
R/W
R/W
Table 11. ChargeOption3 Register (I2C address = 35h) Field Descriptions
I2C
35h
FIELD
TYPE
RESET DESCRIPTION
7 EN_HIZ
R/W
0b
Device Hi-Z Mode Enable
When the charger is in Hi-Z mode, the device draws minimal quiescent
current. With VBUS above UVLO. REGN LDO stays on, and system
powers from battery.
0b: Device not in Hi-Z mode <default at POR>
1b: Device in Hi-Z mode
6 RESET_REG
R/W
0b
Reset Registers
All the registers go back to the default setting except the VINDPM
register.
0b: Idle <default at POR>
1b: Reset all the registers to default values. After reset, this bit goes back
to 0.
5 RESET_VINDPM
R/W
0b
Reset VINDPM Threshold
0b: Idle
1b: Converter is disabled to measure VINDPM threshold. After VINDPM
measurement is done, this bit goes back to 0 and converter starts.
4 EN_OTG
R/W
0b
OTG Mode Enable
Enable device in OTG mode when EN_OTG pin is HIGH.
0b: Disable OTG <default at POR>
1b: Enable OTG mode to supply VBUS from battery.
3 EN_ICO_MODE
R/W
0b
Enable ICO Algorithm
0b: Disable ICO algorithm. <default at POR>
1b: Enable ICO algorithm.
2-0 Reserved
R/W
0b
Reserved
Table 12. ChargeOption3 Register (I2C address = 34h) Field Descriptions
I2C
34h
FIELD
7-2 Reserved
1 BATFETOFF_
HIZ
0 PSYS_OTG_
IDCHG
TYPE
R/W
R/W
R/W
RESET
0b
0b
0b
DESCRIPTION
Reserved
Control BATFET during HIZ mode.
0b: BATFET on during Hi-Z
1b: BATFET off during Hi-Z
PSYS function during OTG mode.
0b: PSYS as battery discharge power minus OTG output power
1b: PSYS as battery discharge power only
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