Datasheet

TPS65720
TPS65721
www.ti.com SLVS979 –OCTOBER 2009
ELECTRICAL CHARACTERISTICS (continued)
V
SYS
= 3.6V, V
DCDC1
= 2.05V, PFM mode, L = 3.3μH, C
OUTDCDC1
= 4.7μF, V
INLDO1
=2.05V, V
LDO1
=1.85V, T
A
= –40°C to 85°C
typical values apply in a temperature range of 10°C to 35°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
for I_TERM[1,0]=11 (termination current is 20% of charge
0.15×I
CHG
0.2×I
CHG
0.27×I
CHG
current)
for I_TERM[1,0]=10 (termination current is 15% of charge
0.11×I
CHG
0.15×I
CHG
0.21×I
CHG
current)
Charge current value for termination detection
I
TERM
threshold (internally set)
for I_TERM[1,0]=01 (termination current is 10% of charge
0.07×I
CHG
0.1×I
CHG
0.15×I
CHG
current)
for I_TERM[1,0]=00 (termination current is 5% of charge
0.03×I
CHG
0.05×I
CHG
0.08×I
CHG
current)
t
DGL(TERM)
Deglitch time, termination detected 25 ms
V
RCH
Recharge detection threshold Voltage below nominal charger voltage 165 100 60 mV
t
DGL(RCH)
Deglitch time, recharge threshold detected 62.5 ms
VBAT = 3.6V. Time measured from VIN: 5V → 3.3V 1μs
t
DGL(NO-IN)
Delay time, input power loss to charger turn-off 20 ms
fall-time
I
BAT(DET)
Sink current for battery detection 5 7.5 10 mA
t
DET
Battery detection timer 250 ms
Safety timer range selectable by I2C; default setting without
T
CHG
Charge safety timer –35% 5 35% h
DPPM or thermal loop active
T
PRECHG
Precharge timer Pre charge timer range; default setting –35% 30 35% min
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