bq24040, bq24041, bq24045
ZHCS292E –SEPTEMBER 2009–REVISED FEBRUARY 2014
www.ti.com.cn
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
BATTERY DETECT ROUTINE – bq24040 / bq24045 (NOTE: In Hot mode V
O(REG)
becomes V
O_HT(REG)
)
VOUT Reduced regulation during V
O(REG)
- V
O(REG)
-
V
REG-BD
V
O(REG)
-0.400 V
battery detect 0.450 350
V
IN
= 5V, V
TS
= 0.5V, Battery Absent
I
BD-SINK
Sink current during V
REG-BD
7 10 mA
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-PACK NTC MONITOR; TS Terminal: bq24040 / bq24045: 10k NTC
I
NTC-10k
NTC bias current V
TS
= 0.3V 48 50 52 μA
10k NTC bias current when Charging
I
NTC-DIS-10k
V
TS
= 0V 27 30 34 μA
is disabled.
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 μA
entering TTDM
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
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. 1475 mV
keep thermistor from entering TTDM
V
TS
: 1.425V → 1.525V
C
TS
Optional Capacitance – ESD 0.22 μF
Low Temp Charging to Pending;
V
TS-0°C
Low temperature CHG Pending 1205 1230 1255 mV
V
TS
: 1V → 1.5V
Charge pending to low temp charging;
V
HYS-0°C
Hysteresis at 0°C 86 mV
V
TS
: 1.5V → 1V
Normal charging to low temp charging;
V
TS-10°C
Low temperature, half charge 765 790 815 mV
V
TS
: 0.5V → 1V
Low temp charging to normal CHG;
V
HYS-10°C
Hysteresis at 10°C 35 mV
V
TS
: 1V → 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
High temp charge to pending;
V
TS-60°C
High temperature Disable 170 178 186 mV
V
TS
: 0.2V → 0.1V
Charge pending to high temp CHG;
V
HYS-60°C
Hysteresis at 60°C 11.5 mV
V
TS
: 0.1V → 0.2V
V
TS-EN-10k
Charge Enable Threshold, (10k NTC) V
TS
: 0V → 0.175V; 80 88 96 mV
HYS below V
TS-EN-10k
to Disable, (10k
V
TS-DIS_HYS-10k
V
TS
: 0.125V → 0V; 12 mV
NTC)
THERMAL REGULATION
T
J(REG)
Temperature regulation limit 125 °C
T
J(OFF)
Thermal shutdown temperature 155 °C
T
J(OFF-HYS)
Thermal shutdown hysteresis 20 °C
BAT_EN , bq24041
I
BAT_EN
Current Sourced out of terminal V
BAT_EN
< 1.4 V 2.3 5 9 μA
V
IL
Logic LOW enables charger 0 0.4 V
V
IH
Logic HIGH disables charger 1.1 6 V
V
CLAMP
Floating Clamp Voltage Floating BAT_EN terminal 1.4 1.6 1.8 V
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