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| BQ2406X Datasheet, PDF (5/31 Pages) Texas Instruments – 1A SINGLE-CHIP Li-Ion/Li-Pol CHARGE MANAGEMENT IC WITH THERMAL REGULATION | |||
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bq2406x
www.ti.com
SLUS689 â JUNE 2006
ELECTRICAL CHARACTERISTICS (Continued)
over recommended operating, TJ : 0â125°C range, See the Application Circuits section, typical values at TJ : 25°C (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
CHARGE TERMINATION DETECTION, VO(REG) = 4.2 V or VO(REG) = 4.36 V, CHARGER ENABLED, NO FAULT CONDITIONS
DETECTED, Thermal regulation LOOP NOT ACTIVE, RTMR = 50K or TMR pin OPEN
I(TERM)
Termination detection current
range
V(BAT) > V(RCH), t < TTDGL(TERM),
I(TERM) = K(SET)Ã V(TERM)/RISET
10
100
V(TERM)
Charge termination detection
set voltage
V(BAT) > V(RCH)
225
250
275
TDGL(TERM)
Deglitch time, termination
detected
V(ISET) decreasing
15
25
35
BATTERY RECHARGE THRESHOLD
V(RCH)
TDGL(RCH)
Recharge threshold detection
Deglitch time, recharge
detection
[VO(REG)âV(BAT) ] > V(RCH)
V(BAT) decreasing
75
100
135
15
25
35
TIMERS, CE = LO, CHARGER ENABLED, NO FAULT CONDITIONS DETECTED, V(TMR) < 3 V, TIMERS ENABLED
T(CHG)
K(CHG)
T(PCHG)
Charge safety timer range
Charge safety timer constant
Pre-charge safety timer range
T(CHG) = K(CHG)Ã RTMR ; thermal loop not active
V(BAT) > V(LOWV)
T(PCHG) = K(PCHG)Ã T(CHG)Ã K(CHG); Thermal
regulation loop not active
3
0.08
1080
10
0.1
0.12
3600
K(PCHG)
Pre-charge safety timer
constant
V(BAT) < V(LOWV)
0.08
0.1
0.12
VTMR(OFF)
Charge timer and termination
enable threshold
[Charge timer AND
termination disabled] at V(TMR)
> VTMR(OFF)
bq24060/61/62/64/
65/66
2.5
Charge timer enable threshold
[Charge timer disabled] at
V(TMR) > VTMR(OFF)
bq24063
ITMR(OFF)
TMR pin pull-up current
ITMR(OFF) = I(TMR), V(TMR) = 3.5 V, V(IN) = 4.5 V,
safety timer off, all other timers set to zero.
1
3.0
3.5
6
BATTERY DETECTION THRESHOLDS
IDET(DOWN)
IDET(UP)
Battery detection current (sink)
Battery detection current
(source)
2 V < V(BAT) < VO(REG)
2 V < V(BAT) < VO(REG)
1
2
3.2
IO(PRECHG)
T(DETECT) Battery detection time
TIMER FAULT RECOVERY
2 V < V(BAT) < VO(REG), Thermal regulation loop not
active;
85
RTMR = 50 kâ¦
120
150
I(FAULT)
Fault Current (source)
V(OUT) < V(RCH)
CHARGE OVER-CURRENT DETECTION, V(IN) ⥠4.5 V, CHARGER ENABLED
â12
â10
â8
ICH(OVC)
Charge over-current detection
threshold
V(ISET) = VSS
2
TDGL(CHOVC)
Over current detection delay
time
Measured from V(ISET) = VSS to
IO(OUT) = 0
100
UNIT
mA
mV
ms
mV
ms
hours
hr/kâ¦
sec
V
µA
mA
mA
ms
mA
A
µs
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