BQ25600 Datasheet, PDF (6/66 Pages) Texas Instruments – I2C Controlled 3.0-A, Single Cell Battery Charger With up-to 40-V Overvoltage Protection Controller for High-Input Voltage and Narrow Voltage DC (NVDC) Power Path Management

bq25600, bq25600D
SLUSCJ4 – JUNE 2017
NAME
Thermal Pad
Pin
bq25600
WCSP
bq25600D
WCSP
—
—
TS
VAC
VBUS
D3
D3
A5
A5
A4
A4
B4
B4
Pin Functions (continued)
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TYPE ⁽¹⁾
DESCRIPTION
Ground reference for the device that is also the thermal pad used to conduct heat from
the device. This connection serves two purposes. The first purpose is to provide an
P
electrical ground connection for the device. The second purpose is to provide a low
thermal-impedance path from the device die to the PCB. This pad should be tied
externally to a ground plane.
Temperature qualification voltage input to support JEITA profile. Connect a negative
temperature coefficient thermistor. Program temperature window with a resistor divider
AI
from REGN to TS to GND. Charge suspends when TS pin voltage is out of range.
When TS pin is not used, connect a 10-kΩ resistor from REGN to TS and a 10-kΩ
resistor from TS to GND. It is recommended to use a 103AT-2 thermistor.
AI
Input voltage sensing. When VAC voltage is below ACOV threshold (REG06[6:5]) and
above UVLO, external OVPFET turns on.
Charger input voltage. The internal n-channel reverse block MOSFET (RBFET) is
P
connected between VBUS and PMID with VBUS on source. Place a 1-uF ceramic
capacitor from VBUS to GND and place it as close as possible to IC.
6
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