Datasheet

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ELECTRICAL CHARACTERISTICS (Continued)
bq2406x
SLUS689A – JUNE 2006 – REVISED OCTOBER 2006
over recommended operating, T
J
= 0–125 ° C range, See the Application Circuits section, typical values at T
J
= 25 ° C (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
CHARGE TERMINATION DETECTION, V
O(REG)
= 4.2 V, CHARGER ENABLED, NO FAULT CONDITIONS DETECTED, Thermal
regulation LOOP NOT ACTIVE, R
TMR
= 50K or TMR pin OPEN
Termination detection current
I
(TERM)
V
(BAT)
> V
(RCH)
, I
(TERM)
= K
(SET)
× V
(TERM)
/R
ISET
10 100 mA
range
Charge termination detection
V
(TERM)
V
(BAT)
> V
(RCH)
225 250 275 mV
set voltage
(1)
Deglitch time, termination
T
DGL(TERM)
V
(ISET)
decreasing 15 25 35 ms
detected
BATTERY RECHARGE THRESHOLD
V
(RCH)
Recharge threshold detection [V
O(REG)
–V(BAT) ] > V
(RCH)
75 100 135 mV
Deglitch time, recharge
T
DGL(RCH)
V
(BAT)
decreasing 15 25 35 ms
detection
TIMERS, CE = LO, CHARGER ENABLED, NO FAULT CONDITIONS DETECTED, V(TMR) < 3 V, TIMERS ENABLED
T
(CHG)
Charge safety timer range T
(CHG)
= K
(CHG)
× R
TMR
; thermal loop not active 3 10 hours
K
(CHG)
Charge safety timer constant V
(BAT)
> V
(LOWV)
0.08 0.1 0.12 hr/k Ω
T
(PCHG)
= K
(PCHG)
× T
(CHG)
; Thermal regulation
T
(PCHG)
Pre-charge safety timer range 1080 3600 sec
loop not active
Pre-charge safety timer
K
(PCHG)
V
(BAT)
< V
(LOWV)
0.08 0.1 0.12
constant
[Charge timer AND
Charge timer and termination
termination disabled] at V
(TMR)
bq24060/61/64
enable threshold
> V
TMR(OFF)
V
TMR(OFF)
2.5 3.0 3.5 V
[Charge timer disabled] at
Charge timer enable threshold bq24063
V
(TMR)
> V
TMR(OFF)
I
TMR
TMR pin source current V
(TMR)
= 3.5 V, V
(IN)
= 4.5 V 1 6 µ A
BATTERY DETECTION THRESHOLDS
I
DET(DOWN)
Battery detection current (sink) 2 V < V
(BAT)
< V
O(REG)
1 2 3.2 mA
Battery detection current
I
DET(UP)
2 V < V
(BAT)
< V
O(REG)
I
O(PRECHG)
(source)
2 V < V
(BAT)
< V
O(REG)
, Thermal regulation loop not
T
(DETECT)
Battery detection time 85 120 150 ms
active; R
TMR
= 50 k Ω , I
DET(down)
or I
DET (UP)
TIMER FAULT RECOVERY
I
(FAULT)
Fault Current (source) V
(OUT)
< V
(RCH)
–12 –10 –8 mA
CHARGE OVERCURRENT DETECTION, V(IN) ≥ 4.5 V, CHARGER ENABLED
Charge overcurrent detection
I
CH(OI)
V
(ISET)
= VSS 2 A
threshold
Overcurrent detection delay
T
DGL(OI)
Measured from V
(ISET)
= VSS to I
O(OUT)
= 0 100 µ s
time
(1) The voltage on the ISET pin is compared to the V
(TERM)
voltage to determine when the termination should occur.
5
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