BQ24192 datasheet(28/53 Pages) TI2

28 / 53 page

bq24190, bq24192, bq24192I

SLUSAW5B – JANUARY 2012 – REVISED DECEMBER 2014

www.ti.com

Device Functional Modes (continued)

If the charger device is in host mode, it will stay in HIZ state even after the USB100-mA source is removed, and

the adapter plugs in. During the HIZ state, REG00[7] is set HIGH and the system load is supplied from battery. It

is recommended that the processor host always checks if the charger IC is in HIZ state when it wakes up. The

host can write REG00[7] to 0 to exit HIZ state.

If the charger is in default mode, when the DC source is removed, the charger device will get out of HIZ state

automatically. When the input source plugs in again, the charger IC runs detection on the input source and

update the input current limit.

9.4.1.2 USB Timer when Charging from USB 100-mA Source

The total charging time in default mode from USB 100-mA source is limited by a 45-min max timer. At the end of

the timer, the device stops the converter and goes to HIZ.

9.5 Register Map

Table 7. Register Map

RESET

bq24190, bq24192: 00110000, or 30

REG00

Input Source Control Register

bq24192I: 00111000, or 38

REG01

Power-On Configuration Register

00011011, or 1B

bq24190, bq24192: 01100000, or 60

REG02

Charge Current Control Register

bq24192I: 00100000, or 20

REG03

Pre-Charge/Termination Current Control Register

00010001, or 11

bq24190, bq241192: 10110010, or B2

REG04

Charge Voltage Control Register

bq24192I: 10011010, or 9A

REG05

Charge Termination/Timer Control Register

10011010, or 9A

REG06

IR Compensation / Thermal Regulation Control Register

00000011, or 03

REG07

Misc Operation Control Register

01001011, or 4B

REG08

System Status Register

—

REG09

Fault Register

—

REG0A

Vender / Part / Revision Status Register

—

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