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ELECTRICAL CHARACTERISTICS – POWER PATH AND CHARGE MANAGEMENT (Continued)
TPS65810
TPS65811
SLVS658B – MARCH 2006 – REVISED FEBRUARY 2007
Over recommended operating conditions (typical values at T
J
= 25 ° C), circuit as in Figure 3 (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
BATTERY RECHARGE DETECTION
New charge cycle starts if V(BAT) < V
O(BATREG)
– V
RCH
, after
V
RCH
Recharge threshold voltage 80 100 130 mV
termination was detected
Deglitch time for recharge
t
DGL(RCH)
R
TMR
= 50 k Ω 22.5 ms
detection
DPPM FUNCTION
V
DPPM
DPPM regulation point range V
(DPPM)
= R
DPPM
× K
DPPMM
× I
O(DPPM)
2.6 4.4 V
I
O(DPPM)
DPPM pin current source AC or USB Present 95 100 105 µ A
K
DPPM
DPPM scaling factor 1.139 1.15 1.162
t
DGL(DPPM
Status bit set indicating DPPM loop active after deglitch time,
DPPM de-glitch time 500 µ s
)
R
TMR
= 50 k Ω
CHARGE AND PRE-CHARGE SAFETY TIMER
Charge safety timer Safety timer range, thermal/DPPM loop not active,
t
CHG
3 5 10 h
programmed value t
CHG
= R
TMR
× K
TMR
K
TMR
Charge timer set factor 0.313 0.36 0.414 s/ Ω
Total elapsed time when DPPM Fast charge on, t
CHGADD
is the maximum add-on time added to
t
CHGADD
2 × t
CHG
h
or thermal loop are active t
CHG
Precharge safety timer Pre charge safety timer range, thermal/DPPM loop not active, min
t
PRECHG
18 30 60
programmed value t
PRECHG
= K
PRE
× R
TMR
× K
TMR
K
PRE
Pre-charge timer set factor 0.09 0.1 0.11
Total elapsed time when DPPM Pre-charge on, t
PCHGADD
is the maximum add-on time added to
t
PCHGADD
2 × t
PRECHG
h
or thermal loop are active t
PRECHG
R
TMR
External timer resistor limits 30 100 k Ω
Timer fault recovery pullup Internal resistor connected from OUT to BAT after safety timer
R
TMR(FLT)
1 k Ω
resistor timeout
THERMAL REGULATION LOOP
T
THREG
Temperature regulation limit Charge current decreased and timer extended when T
J
> T
THREG
115 135 ° C
CHARGER THERMAL SHUTDOWN
T
THCHG
Charger thermal shutdown Charger turned off when T
J
>T
THCHG
150
° C
Charger thermal shutdown
T
HCHGHYS
30
hystersis
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