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Pins

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Layout

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Name
Pin #
Type
Part Type
Pin Description
Pin Group
STAT
1
Output
Terminal
Open-drain charge status output; connect to pull-up rail through 10k resistor. Logical pin 1 primary land.
Status Outputs
VBUS
2
Power In
Terminal
VBUS charger input voltage; logical pin 2 of VBUS pin pair.
Power Input
VBUS
3
Power In
Terminal
VBUS charger input voltage; logical pin 3 of VBUS pin pair.
Power Input
BTST1
4
Power In
Terminal
Input high-side MOSFET gate-driver supply; connect 47nF ceramic capacitor between SW1 and BTST1.
Bootstrap Drivers
REGN
5
Power Out
Terminal
Internal linear regulator output; connect 4.7uF ceramic capacitor from REGN to power ground.
Internal Regulator / Bias
D+
6
Bi-Directional
Terminal
Positive USB data line for USB host/charging-port detection on VIN1 input.
USB Data Detection
D-
7
Bi-Directional
Terminal
Negative USB data line for USB host/charging-port detection on VIN1 input.
USB Data Detection
VAC2
8
Input
Terminal
VAC2 input detection for port 2; valid input detection 3.6V to 24V.
Input Detection
VAC1
9
Input
Terminal
VAC1 input detection for port 1; valid input detection 3.6V to 24V. Logical pin 9 primary land.
Input Detection
ACDRV2
10
Output
Terminal
Input FET driver pin 2 for port 2 ACFET/RBFET charge-pump drive; tie to GND if input FETs are not installed.
Input FET Drivers
ACDRV1
11
Output
Terminal
Input FET driver pin 1 for port 1 ACFET/RBFET charge-pump drive; tie to GND if input FETs are not installed.
Input FET Drivers
~{QON}
12
Input
Terminal
QON ship-FET enable or system power reset control input; low-duration input exits ship mode or resets system power; internal pull-up present.
Control Inputs
~{CE}
13
Input
Terminal
Active-low charge enable input; must be pulled high or low and must not float.
Control Inputs
SCL
14
Input
Terminal
I2C interface clock; connect SCL to logic rail through 10k pull-up resistor.
I2C Interface
SDA
15
Bi-Directional
Terminal
I2C interface data; connect SDA to logic rail through 10k pull-up resistor.
I2C Interface
TS
16
Input
Terminal
Temperature qualification voltage input for NTC divider; logical pin 16 primary land.
Temperature Sense
ILIM_HIZ
17
Input
Terminal
Input current limit setting and HiZ mode control input; connect to REGN to set maximum input current limit.
Configuration Inputs
BATP
18
Input
Terminal
Positive input for battery voltage sensing; connect to battery positive through 100 ohm series resistance.
Battery Sense
BTST2
19
Power In
Terminal
Output high-side MOSFET gate-driver supply; connect 47nF ceramic capacitor between SW2 and BTST2.
Bootstrap Drivers
PROG
20
Input
Terminal
POR default settings program pin; resistance to ground determines default switching frequency and battery charging profile.
Configuration Inputs
~{INT}
21
Output
Terminal
Open-drain interrupt output; active-low 256us pulse to report charger status and faults; connect to logic rail through 10k pull-up.
Status Outputs
BAT
22
Power In
Terminal
Battery charging power connection; logical pin 22 of BAT pin pair.
Battery Power
BAT
23
Power In
Terminal
Battery charging power connection; logical pin 23 of BAT pin pair.
Battery Power

BQ25792RQMR