Datasheet
bq24090, bq24091
bq24092, bq24093
www.ti.com
SLUS968A –JANUARY 2010–REVISED FEBRUARY 2010
ELECTRICAL CHARACTERISTICS (continued)
Over junction temperature range 0°C ≤ T
J
≤ 125°C and recommended supply voltage (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
RECHARGE OR REFRESH
Recharge detection threshold – V
O(REG)
V
O(REG)
-
V
IN
= 5V, V
TS
= 0.5V, V
OUT
: 4.25V → V
RCH
V
O(REG)
-0.095 V
Normal Temp -0.120 0.070
V
RCH
Recharge detection threshold – Hot V
O(REG)
V
O(REG)
-
V
IN
= 5V, V
TS
= 0.2V, V
OUT
: 4.15V → V
RCH
V
O(REG)
-0.105 V
Temp -0.130 0.080
Deglitch time, recharge threshold V
IN
= 5V, V
TS
= 0.5V, V
OUT
: 4.25V → 3.5V in 1ms;
t
DGL1(RCH)
29 ms
detected t
DGL(RCH)
is time to ISET ramp
Deglitch time, recharge threshold V
IN
= 5V, V
TS
= 0.5V, V
OUT
= 3.5V inserted; t
DGL(RCH)
t
DGL2(RCH)
3.6 ms
detected in OUT-Detect Mode is time to ISET ramp
BATTERY DETECT ROUTINE
VOUT Reduced regulation during V
O(REG)
V
O(REG)
-
V
REG-BD
V
O(REG)
-0.400 V
battery detect -0.450 350
I
BD-SINK
Sink current during V
REG-BD
V
IN
= 5V, V
TS
= 0.5V, Battery Absent 7 10 mA
t
DGL(HI/LOW
Regulation time at V
REG
or V
REG-BD
25 ms
REG)
V
O(REG)
V
O(REG)
-
V
BD-HI
High battery detection threshold V
IN
= 5V, V
TS
= 0.5V, Battery Absent V
O(REG)
-0.100 V
-0.150 0.050
V
REG-BD
V
REG-BD
V
BD-LO
Low battery detection threshold V
IN
= 5V, V
TS
= 0.5V, Battery Absent V
REG-BD
+0.1 V
+0.50 +0.15
BATTERY CHARGING TIMERS AND FAULT TIMERS
Restarts when entering Pre-charge; Always enabled
t
PRECHG
Pre-charge safety timer value 1700 1940 2250 s
when in pre-charge.
Clears fault or resets at UVLO, TS/BAT_EN disable,
t
MAXCH
Charge safety timer value 34000 38800 45000 s
OUT Short, exiting LOWV and Refresh
BATTERY-PACK NTC MONITOR (Note 1); TS pin: 10k and 100k NTC
I
NTC-10k
NTC bias current, bq24090/2 V
TS
= 0.3V 48 50 52 mA
I
NTC-100k
NTC bias current, bq24091/3 V
TS
= 0.3V 4.8 5.0 5.2 mA
10k NTC bias current when Charging
I
NTC-DIS-10k
V
TS
= 0V 27 30 34 mA
is disabled, bq24090/2
10k NTC bias current when Charging
I
NTC-DIS-100k
V
TS
= 0V 4.4 5.0 5.8 mA
is disabled, bq24091/3
INTC is reduced prior to entering
I
NTC-FLDBK-10k
TTDM to keep cold thermistor from V
TS
: Set to 1.525V 4 5 6.5 mA
entering TTDM, bq24090/2
INTC is reduced prior to entering
I
NTC-FLDBK-100k
TTDM to keep cold thermistor from V
TS
: Set to 1.525V 1.1 1.5 1.9 mA
entering TTDM, bq24091/3
Termination and timer disable mode
V
TTDM(TS)
V
TS
: 0.5V → 1.7V; Timer Held in Reset 1550 1600 1650 mV
Threshold – Enter
V
HYS-TTDM(TS)
Hysteresis exiting TTDM V
TS
: 1.7V → 0.5V; Timer Enabled 100 mV
V
CLAMP(TS)
TS maximum voltage clamp V
TS
= Open (Float) 1800 1950 2000 mV
Deglitch exit TTDM between states 57 ms
t
DGL(TTDM)
Deglitch enter TTDM between states 8 ms
INTC adjustment (90 to 10%; 45 to 6.6uS) takes
TS voltage where INTC is reduce to
V
TS_I-FLDBK
place near this spec threshold. V
TS
: 1.425V → 1475 mV
keep thermistor from entering TTDM
1.525V
C
TS
Optional Capacitance – ESD 0.22 mF
Low Temp Charging to Pending;
V
TS-0°C
Low temperature CHG Pending 1205 1230 1255 mV
V
TS
: 1.0V → 1.5V
Charge pending to low temp charging;
V
HYS-0°C
Hysteresis at 0°C 86 mV
V
TS
: 1.5V → 1V
Low temperature, half charge, Normal charging to low temp charging;
V
TS-10°C
765 790 815 mV
bq24092/3 V
TS
: 0.5V → 1V
Low temp charging to normal CHG;
V
HYS-10°C
Hysteresis at 10°C, bq24092/3 35 mV
V
TS
: 1.0V → 0.5V
Normal charging to high temp CHG;
V
TS-45°C
High temperature at 4.1V 263 278 293 mV
V
TS
: 0.5V → 0.2V
High temp charging to normal CHG;
V
HYS-45°C
Hysteresis at 45°C 10.7 mV
V
TS
: 0.2V → 0.5V
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