Datasheet

bq24616
www.ti.com SLUSA49B –APRIL 2010– REVISED OCTOBER 2011
ELECTRICAL CHARACTERISTICS (continued)
5 V ≤ V
VCC
≤ 28 V, 0°C < T
J
< 125°C, typical values are at T
A
= 25°C, with respect to GND (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
BAT OVERVOLTAGE COMPARATOR
V
OV_RISE
Overvoltage rising threshold As percentage of V
FB
,T1 – T5 104%
V
OV_FALL
Overvoltage falling threshold As percentage of V
FB
,T1 – T5 102%
INPUT OVERVOLTAGE COMPARATOR (ACOV)
V
ACOV
AC overvoltage rising threshold on VCC 31.04 32 32.96 V
V
ACOV_HYS
AC overvoltage falling hysteresis 1 V
AC overvoltage deglitch (both edges) Delay to changing the STAT pins 1 ms
AC overvoltage rising deglitch Delay to turn-off ACFET, disable charge 1 ms
AC overvoltage falling deglitch Delay to turn on ACFET, resume charge 20 ms
THERMAL SHUTDOWN COMPARATOR
T
SHUT
Thermal shutdown rising temperature Temperature increasing 145 °C
T
SHUT_HYS
Thermal shutdown hysteresis 15 °C
Thermal shutdown rising deglitch Temperature increasing 100 μs
Thermal shutdown falling deglitch Temperature decreasing 10 ms
THERMISTOR COMPARATOR
T1 (0 °C) threshold, charge suspended
V
T1
V
TS
rising, as percentage of V
VREF
70.2% 70.8% 71.4%
below this temperature
Charge back to I
CHARGE
/2 and V
FB
= 2.1
V
T1-HYS
Hysteresis, V
TS
falling 0.6%
V above this temperature.
T2 (10 °C) threshold, charge back to
V
T2
I
CHARGE
/2 and V
FB
= 2.1 V below this V
TS
rising, as percentage of V
VREF
68.0% 68.6% 69.2%
temperature.
Charge back to I
CHARGE
and V
FB
= 2.1 V
V
T2-HYS
Hysteresis, V
TS
falling 0.8%
above this temperature.
T3 (45 °C) threshold, charge back to
V
T3
I
CHARGE
and V
FB
= 2.05 V above this V
TS
falling, as percentage of V
VREF
55.5% 56.1% 56.7%
temperature.
Charge back to I
CHARGE
and V
FB
= 2.1 V
V
T3-HYS
Hysteresis, V
TS
rising 0.8%
below this temperature.
T4 (50 °C) threshold, charge back to
V
T4
I
CHARGE
and V
FB
= 2.025 V above this V
TS
falling, as percentage of V
VREF
53.2% 53.7% 54.2%
temperature.
Charge back to I
CHARGE
and V
FB
= 2.05
V
T4-HYS
Hysteresis, V
TS
rising 0.8%
V below this temperature.
T5 (60 °C) threshold, charge suspended
V
T5
V
TS
falling, as percentage of V
VREF
47.6% 48.1% 48.6%
above this temperature.
Charge back to I
CHARGE
and V
FB
= 2.025
V
T5-HYS
Hysteresis, V
TS
rising 1.2%
V below this temperature.
Deglitch time for temperature
V
TS
< V
T5
or V
TS
> V
T1
400 ms
out-of-valid-charge-range detection
Deglitch time for temperature
V
TS
> V
T5
+ V
T5_HYS
or V
TS
< V
T1
- V
T1_HYS
20 ms
in-valid-range detection
Deglitch time for temperature detection
25 ms
above/below T2, T3, T4 threshold
Charge current when V
TS
between V
T1
I
CHARGE
and V
T2
range /2
CHARGE OVERCURRENT COMPARATOR (CYCLE-BY-CYCLE)
Current rising in non-synchronous mode, measure on
45.5 mV
V
(SRP-SRN)
, V
SRP
< 2 V
Charge overcurrent falling threshold
Current rising, as percentage of V
(IREG_CHG)
, in
160%
synchronous mode, V
SRP
> 2.2V
V
OC
Minimum OCP threshold in synchronous mode,
Charge overcurrent threshold floor 50 mV
measure on V
(SRP-SRN)
, V
SRP
> 2.2 V
Maximum OCP threshold in synchronous mode,
Charge overcurrent threshold ceiling 180 mV
measure on V
(SRP-SRN)
, V
SRP
> 2.2 V
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