Datasheet

bq24190, bq24192
bq24192I, bq24193
www.ti.com SLUSAW5A –JANUARY 2012–REVISED OCTOBER 2012
ELECTRICAL CHARACTERISTICS (continued)
V
VBUS_UVLOZ
< V
VBUS
< V
ACOV
and V
VBUS
> V
BAT
+ V
SLEEP
, T
J
= –40°C to 125°C and T
J
= 25°C for typical values unless other
noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
BAT OVER-VOLTAGE PROTECTION
V
BATOVP
Battery over-voltage threshold V
BAT
rising, as percentage of V
BAT_REG
104%
V
BATOVP_HYST
Battery over-voltage hysteresis V
BAT
falling, as percentage of V
BAT_REG
2%
Battery over-voltage deglitch time to disable
t
BATOVP
1 µs
charge
THERMAL REGULATION AND THERMAL SHUTDOWN
T
Junction_REG
Junction temperature regulation accuracy REG06[1:0] = 11 115 120 125 °C
T
SHUT
Thermal shutdown rising temperature Temperature increasing 160 °C
T
SHUT_HYS
Thermal shutdown hysteresis 30 °C
Thermal shutdown rising deglitch Temperature increasing delay 1 ms
Thermal shutdown falling deglitch Temperature decreasing delay 1 ms
COLD/HOT THERMISTER COMPARATOR (bq24190,bq24192,bq24192I)
Cold temperature threshold, TS pin voltage
V
LTF
Charger suspends charge. As Percentage to V
REGN
73% 73.5% 74%
rising threshold
Cold temperature hysteresis, TS pin voltage
V
LTF_HYS
As Percentage to V
REGN
0.2% 0.4% 0.6%
falling
Hot temperature TS pin voltage falling
V
HTF
As Percentage to V
REGN
46.6% 47.2% 48.8%
threshold
Cut-off temperature TS pin voltage falling
V
TCO
As Percentage to V
REGN
44.2% 44.7% 45.2%
threshold
Deglitch time for temperature out of range
V
TS
> V
LTF
, or V
TS
< V
TCO
, or V
TS
< V
HTF
10 ms
detection
JEITA THERMISTER COMPARATOR (bq24193)
T1 (0°C) threshold, Charge suspended T1
V
T1
V
TS
rising, As Percentage to V
REGN
70.2% 70.8% 71.4%
below this temperature.
Charge back to I
CHG
/2 and 4.2V above this
V
T1_HYS
Hysteresis, V
TS
falling 0.6%
temperature
T2 (10°C) threshold, Charge back to I
CHG
/2
V
T2
V
TS
rising, as percentage of V
REGN
68.0% 68.6% 69.2%
and 4.2V below this temperature
Charge back to I
CHG
and 4.2V above this
V
T2_HYS
Hysteresis, V
TS
falling 0.8%
temperature
T3 (45°C) threshold, Charge back to I
CHG
V
T3
V
TS
falling, as percentage of V
REGN
55.5% 56.1% 56.7%
and 4.05V above this temperature
Charge back to I
CHG
and 4.2V below this
V
T3_HYS
Hysteresis, V
TS
rising 0.8%
temperature
T5 (60°C) threshold, charge suspended
V
T5
V
TS
falling, as percentage of V
REGN
47.6% 48.1% 48.6%
above this temperature
Charge back to I
CHG
and 4.05V below this
V
T5_HYS
Hysteresis, V
TS
rising 1.2%
temperature
CHARGE OVER-CURRENT COMPARATOR
I
HSFET_OCP
HSFET over-Current threshold 5.3 7 A
I
BATFET_OCP
System over load threshold 9 A
CHARGE UNDER-CURRENT COMPARATOR (CYCLE-BY-CYCLE)
LSFET charge under-current falling
V
LSFET_UCP
From sync mode to non-sync mode 100 mA
threshold
PWM OPERATION
F
SW
PWM Switching frequency, and digital clock 1300 1500 1700 kHz
D
MAX
Maximum PWM duty cycle 97%
VBTST-VSW when LSFET refresh pulse is
3.6
requested, VBUS=5V
V
BTST_REFRESH
Bootstrap refresh comparator threshold V
VBTST-VSW when LSFET refresh pulse is
4.2
requested, VBUS>6V
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