BQ25872 Datasheet, PDF (8/68 Pages) Texas Instruments – Battery Switch Charger

bq25872
SLUSCQ6 – OCTOBER 2016
www.ti.com
Electrical Characteristics (continued)
Unless otherwise noted, the specification in the following table applies over operating ambient temperature range –40 °C ≤ T_A
≤ 85 °C. Typical values are for T_A = 25 °C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
Rising
VUSBOVP_I2C = '00'
5.6
6.0
V
Falling hystersis
VUSBOVP_I2C = '00'
100
mV
Rising
VUSBOVP_I2C = '01' or OVPSET pin =
6.5
floating (VUSBOVP_12C = '01', '10' or '11'
)
7.0
V
Falling hystersis
VUSBOVP_I2C = '01' or OVPSET pin =
floating (VUSBOVP_12C = '01', '10' or '11'
)
120
mV
V_{USB_OVP}
Rising
VUSBOVP_I2C = '10' (OVPSET pin = mid
10.8
or ground) or OVPSET pin = low
(VUSBOVP_12C = ('10' or '11' )
11.3
V
Falling hystersis
VUSBOVP_I2C = '10' (OVPSET pin = mid
or low ) or OVPSET pin = low
(VUSBOVP_12C = ('10' or '11' )
200
mV
Rising
VUSBOVP_I2C = '11' and OVPSET pin =
14.5
low
15.0
V
Falling hystersis
VUSBOVP_I2C = '11' and OVPSET pin =
low
300
mV
PROTECTION THRESHOLD and ACCURACY
VDROP OVP range
VBUS – VOUT. Programmable range
0
1000 mV
V_{DROP_OVP}
VDROP OVP step size
VDROP OVP
comparator accuracy
0 mV ≤ VDROP_OVP ≤ 640 mV
700 mV < VDROP_OVP ≤ 1000 mV
VDROP_OVP = 80 mV
VDROP_OVP = 160 mV
–8.0%
–5.0%
10
mV
100
mV
8.0%
5.0%
VDROP ALM range
VBUS – VOUT. Programmable range
0
1000 mV
V_{DROP_ALM}
VDROP ALM step size
VDROP ALM
comparator accuracy
0 mV ≤ VDROP_OVP ≤ 640 mV
700 mV < VDROOP_OVP ≤ 1000 mV
VDROP_ALM = 80 mV
VDROP_ALM = 160 mV
–8.0%
–5.0%
10
mV
100
mV
8.0%
5.0%
VDROP ALM falling
hysteresis
10
mV
VBUS OVP range
Programmable range
4.20
6.51
V
VBUS OVP step size
30
mV
V_{BUS_OVP}
VBUS OVP comparator
accuracy
VBUS_OVP = 4.20 V
VBUS_OVP = 4.50 V
VBUS_OVP = 5.49 V
–1.25%
–1.25%
–1.25%
1.25%
1.25%
1.25%
VBUS OVP falling
hysteresis
VBUS_OVP = 4.20 V
50
mV
IBUS REG range
Programmable range
0
6.3
A
I_{BUS_REG}
IBUS REG step size
IBUS REG accuracy
IBUS OCP range
IBUS_REG = 1.5 A, –40 °C ≤ T_A ≤ 85 °C
IBUS_REG = 1.5 A, T_A = 25 °C
Programmable range
–20%
–10%
0
100
mA
20%
10%
7.5
A
I_{BUS_OCP}
IBUS OCP step size
IBUS OCP comparator
accuracy
IBUS_OCP = 1.5 A
–20%
500
mA
20%
8
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