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BQ25890H Datasheet, PDF (4/66 Pages) Texas Instruments – I2C Controlled Single Cell 5-A Fast Charger
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BQ25890H
SLUSCC5 – SEPTEMBER 2016
6 Pin Configuration and Functions
BQ25890H
RTW (WQFN)
Top View
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24 23 22 21 20 19
VBUS 1
D+ 2
D– 3
STAT 4
SCL 5
SDA 6
18 PGND
17 PGND
16 SYS
15 SYS
14 BAT
13 BAT
7 8 9 10 11 12
PIN
NAME
No.
VBUS
1
D+
2
D–
3
STAT
4
SCL
5
SDA
6
INT
7
OTG
8
CE
9
Pin Functions
TYPE (1)
DESCRIPTION
Charger Input Voltage.
P
The internal n-channel reverse block MOSFET (RBFET) is connected between VBUS and PMID with VBUS on
source. Place a 1-µF ceramic capacitor from VBUS to PGND and place it as close as possible to IC.
Positive line of the USB data line pair.
AIO
D+/D- based USB host/charging port detection. The detection includes data contact detection (DCD), primary
and secondary detection in BC1.2, and Adjustable high voltage adapter. The pin can be configured as output
driver by DP_DAC register bits when input source is plugged-in or during OTG mode.
Negative line of the USB data line pair.
AIO
D+/D- based USB host/charging port detection. The detection includes data contact detection (DCD), primary
and secondary detection in BC1.2, and Adjustable high voltage adapter. The pin can be configured as output
driver by DM_DAC register bits when input source is plugged-in or during OTG mode.
Open drain charge status output to indicate various charger operation.
DO
Connect to the pull up rail via 10-kΩ resistor. LOW indicates charge in progress. HIGH indicates charge
complete or charge disabled. When any fault condition occurs, STAT pin blinks in 1 Hz.
The STAT pin function can be disabled when STAT_DIS bit is set.
DI
I2C Interface clock.
Connect SCL to the logic rail through a 10-kΩ resistor.
DIO
I2C Interface data.
Connect SDA to the logic rail through a 10-kΩ resistor.
Open-drain Interrupt Output.
DO Connect the INT to a logic rail via 10-kΩ resistor. The INT pin sends active low, 256-µs pulse to host to report
charger device status and fault.
DI
Active high enable pin during boost mode.
The boost mode is activated when OTG_CONFIG =1 and OTG pin is high
DI
Active low Charge Enable pin.
Battery charging is enabled when CHG_CONFIG = 1 and CE pin = Low. CE pin must be pulled High or Low.
(1) DI (Digital Input), DO (Digital Output), DIO (Digital Input/Output), AI (Analog Input), AO (Analog Output), AIO (Analog Input/Output)
4
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