Datasheet

bq24600
SLUS891A –FEBRUARY 2010– REVISED OCTOBER 2011 www.ti.com
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
RECHARGE COMPARATOR
Recharge threshold (with respect
V
RECHG
Measured on VFB pin 35 50 65 mV
to.V
REG
)
Recharge rising deglitch VFB decreasing below V
RECHG
10 ms
Recharge falling deglitch VFB increasing above V
RECHG
10 ms
BAT OVER-VOLTAGE COMPARATOR
V
OV_RISE
Overvoltage rising threshold As percentage of VFB 104%
V
OV_FALL
Overvoltage falling threshold As percentage of VFB 102%
INPUT OVER-VOLTAGE 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
V
ACOV_HYS
AC overvoltage rising deglitch 1 ms
AC overvoltage falling deglitch 1 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
V
LTF
Cold temperature rising threshold As percentage to V
VREF
72.5% 73.5% 74.5%
V
LTF_HYS
Rising hysteresis As percentage to V
VREF
0.2% 0.4% 0.6%
V
HTF
Hot temperature rising threshold As percentage to V
VREF
36.2% 37% 37.8%
V
TCO
Cutoff temperature rising threshold As percentage to V
VREF
33.7% 34.4% 35.1%
Deglitch time for temperature out of
V
TS
> V
LTF
, or V
TS
< V
TCO
, or V
TS
< V
HTF
400 ms
range detection
Deglitch time for temperature in valid
V
TS
< V
LTF
– V
LTF_HYS
or V
TS
>V
TCO
, or V
TS
> V
HTF
20 ms
range detection
CHARGE OVERCURRENT COMPARATOR (CYCLE-BY-CYCLE)
Current rising, in non-synchronous mode, mesure 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
> 2.2 V
V
OC
Minimum OCP threshold in synchronous mode, measure
Charge overcurrent threshold floor 50 mV
on V
(SRP-SRN)
, V
SRP
> 2.2 V
Maximum OCP threshold in synchronous mode, measure
Charge over-current threshold ceiling 180 mV
on V
(SRP-SRN)
, V
SRP
> 2.2 V
CHARGE UNDERCURRENT COMPARATOR (CYCLE-BY-CYCLE)
V
ISYNSET
Charge under-current falling threshold V
SRP
>2.2 V, switch from CCM to DCM 1 5 9 mV
BATTERY SHORTED COMPARATOR (BATSHORT)
BAT Short falling threshold, forced
V
BATSHT
V
SRP
falling 2 V
non-syn mode
V
BATSHT_HYS
BAT short rising hysteresis 200 mV
V
BATSHT_DEG
Deglitch on both edges 1 μs
LOW CHARGE CURRENT COMPARATOR
Low charge current (average) falling
V
LC
Measure V
(SRP-SRN)
1.25 mV
threshold to force into non-sync mode
V
LC_HYS
Low charge current rising hysteresis 1.25 mV
V
LC_DEG
Deglitch on both edges 1 μs
VREF REGULATOR
V
VREF_REG
VREF regulator voltage V
VCC
> V
UVLO
(0 - 35-mA load) 3.267 3.3 3.333 V
I
VREF_LIM
VREF current limit V
VREF
= 0 V, V
VCC
> V
UVLO
35 mA
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