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BQ25895_16 Datasheet, PDF (3/67 Pages) Texas Instruments – Adjustable Voltage 3.1-A Boost Operation
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6 Pin Configuration and Functions
bq25895
RTW (WQFN)
Top View
bq25895
SLUSC88A – MARCH 2015 – REVISED MAY 2016
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
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 (MaxCharge).
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 (MaxCharge).
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.
Boost mode enable pin.
DI
The boost mode is activated when OTG_CONFIG =1, OTG pin is high, and no input source is detected at
VBUS
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)
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