Datasheet

bq24230
bq24232
www.ti.com SLUS821E –OCTOBER 2008–REVISED JANUARY 2014
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Deglitch time, recharge threshold
t
DGL(RCH)
62.5 ms
detected
V
BAT
= 3.6 V. Time measured from
Delay time, input power loss to
t
DGL(NO-IN)
20 ms
charger turnoff
V
IN
: 5 V → 3 V 1-μs fall time
I
BAT(DET)
Sink current for battery detection V
BAT
=2.5 V 5 7.5 10 mA
t
DET
Battery detection timer BAT high or low 250 ms
BATTERY CHARGING TIMERS
t
PRECHG
Precharge safety timer value TMR = floating 1440 1800 2160 s
t
MAXCHG
Charge safety timer value TMR = floating 14400 18000 21600 s
t
PRECHG
Precharge safety timer value 18 kΩ < R
TMR
< 72 kΩ R
TMR
× K
TMR
s
t
MAXCHG
Charge safety timer value 18 kΩ < R
TMR
< 72 kΩ 10×RTMR ×K
TMR
s
K
TMR
Timer factor 30 40 50 s/kΩ
BATTERY-PACK NTC MONITOR
(1)
I
NTC
NTC bias current V
IN
> UVLO and V
IN
> V
BAT
+V
IN(DT)
72 75 78 μA
V
HOT
High-temperature trip point Battery charging, V
TS
Falling 270 300 330 mV
V
HYS(HOT)
Hysteresis on high trip point Battery charging, V
TS
Rising from V
HOT
30 mV
V
COLD
Low-temperature trip point Battery charging, V
TS
Rising 2000 2100 2200 mV
V
HYS(COLD)
Hysteresis on low trip point Battery charging, V
TS
Falling from V
COLD
300 mV
Deglitch time, pack temperature
t
DGL(TS)
Battery charging, V
TS
Falling 50 ms
fault detection
V
DIS(TS)
TS function disable threshold TS unconnected V
IN
-200 mV V
THERMAL REGULATION
T
J(REG)
Temperature regulation limit 125 °C
T
J(OFF)
Thermal shutdown temperature T
J
rising 155 °C
T
J(OFF-HYS)
Thermal shutdown hysteresis 20 °C
LOGIC LEVELS ON EN1, EN2, CE, TD
V
IL
Logic LOW input voltage 0 0.4 V
V
IH
Logic HIGH input voltage 1.4 6.0 V
I
IL
Input sink current V
IL
= 0 V 1 μA
I
IH
Input source current V
IH
= 1.4 V 10 μA
LOGIC LEVELS ON PGOOD, CHG
V
OL
Output LOW voltage I
SINK
= 5 mA 0.4 V
(1) These numbers set trip points of 0°C and 50°C while charging, with 3°C hysteresis on the trip points, with a Vishay Type 2 curve NTC
with an R25 of 10 kΩ.
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