Datasheet

bq24630
SLUS894A –JANUARY 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
BAT OVERVOLTAGE COMPARATOR
V
OV_RISE
Overvoltage rising threshold As percentage of V
FB
108%
V
OV_FALL
Overvoltage falling threshold As percentage of V
FB
105%
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 disable charge 1 ms
AC overvoltage, falling deglitch Delay to 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
V
LTF
Cold temperature, rising threshold Charger suspended below this temperature 72.5% 73.5% 74.5%
V
LTF_HYS
Cold temperature hysteresis 0.2% 0.4% 0.6%
Charger enabled, cuts back to I
CHARGE
/8 below this
V
COOL
Cool temperature rising threshold 70.2% 70.7% 71.2%
temperature
V
COOL_HYS
Cool temperature hysteresis 0.2% 0.6% 1.0%
V
WARM
Warm temperature rising threshold Charger cuts back to I
CHARGE
/8 above this temperature 47.5% 48% 48.5%
V
WARM_HYS
Warm temperature hysteresis 1.0% 1.2% 1.4%
Charger suspended above this temperature before
V
HTF
Hot temperature rising threshold 36.2% 37% 37.8%
initiating charge
Charger suspended above this temperature during
V
TCO
Cutoff temperature rising threshold 33.7% 34.4% 35.1%
initiating charge
Deglitch time for temperature out-of-range
V
TS
> V
LTF
, or V
TS
< V
TCO
, or V
TS
< V
HTF
400 ms
detection
Deglitch time for temperature
V
TS
< V
LTF
– V
LTF_HYS
or V
TS
>V
TCO
or V
TS
> V
HTF
20 ms
in-valid-range detection
Deglitch time for current reduction to
V
TS
> V
COOL
, or V
TS
< V
WARM
25 ms
I
CHARGE
/8 due to warm or cool temperature
Deglitch time to charge at I
CHARGE
from
I
CHARGE
/8 when resuming from warm or V
TS
< V
COOL
– V
COOL_HYS
, or V
TS
> V
WARM
– V
WARM_HYS
25 ms
cool temperatures
Charge current due to warm or cool V
COOL
< V
TS
< V
LTF
, or V
WARM
< V
TS
< V
HTF
, or V
WARM
< I
CHARGE
temperatures V
TS
< V
TCO
/8
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 overcurrent 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 Switch from SYNCH to NON-SYNCH, V
SRP
> 2.2 V 1 5 9 mV
BATTERY SHORTED COMPARATOR (BATSHORT)
BAT short falling threshold, forced
V
BATSHT
V
SRP
falling 2 V
non-synchronous mode
V
BATSHT_HYS
BAT short rising hysteresis 200 mV
V
BATSHT_DEG
Deglitch on both edge 1 μs
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