Datasheet

TPS65720
TPS65721
SLVS979 –OCTOBER 2009 www.ti.com
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
V
OUT
≤
V
BSUP1
Enter battery supplement mode V
BAT
V
–40mV
V
OUT
≥
V
BSUP2
Exit battery supplement mode V
BAT
V
–20mV
V
O(SC1)
Output short-circuit detection threshold, power-on 0.8 0.9 1 V
Output short-circuit detection threshold, supplement
V
O(SC2)
mode 200 250 300 mV
V
BAT
– V
OUT
> V
O(SC2)
indicates short-circuit
t
DGL(SC2)
Deglitch time, supplement mode short circuit 250 μs
t
REC(SC2)
Recovery time, supplement mode short circuit 60 ms
BATTERY CHARGER
QUIESCENT CURRENT
V
IN
= 5V; ACinputcurrent[1,0]=11 60 80 μA
I
IACSTDBY)
Standby current into AC pin
V
IN
= 28V; ACinputcurrent[1,0]=11 530 μA
V
IN
= 5V, no load on DCDC1, LDO1, SYS pin, VSYS[1,0]=11;
I
CC
Active supply current, AC pin 2 mA
ACinputcurrent[1,0]=10; CH_EN=0
IBAT(SC) Source current for BAT pin short-circuit detection 4 7.5 11 mA
VBAT(SC) BAT pin short-circuit detection threshold 1.6 1.8 2.0 V
–1% 4.15 1%
–1% 4.175 1%
–1% 4.20 1%
–1% 4.225 1%
Depending on setting in CHGCONFIG3 And internal EEPROM
V
o(BATREG)
Battery charger voltage V
Default = 4.2V
–1% 4.25 1%
–1% 4.275 1%
–1% 4.30 1%
–1% 4.325 1%
V
LOWV
Pre-charge to fast-charge transition threshold 2.9 3.0 3.1 V
Deglitch time on pre-charge to fast-charge
t
DGL1(LOWV)
25 ms
transition
Deglitch time on fast-charge to pre-charge
t
DGL2(LOWV)
25 ms
transition
Maximum battery fast charge current 300 mA
V
BAT(REG)
> V
BAT
> V
LOWV
, V
IN
= V
AC
or V
USB
= 5V
Minimum battery fast charge current 10 mA
I
CHG
V
BAT
> V
LOWV
, V
IN
= 5V, I
IN-MAX
> I
CHG
, No load on SYS pin,
Battery fast charge current set factor K
ISET
/ R
ISET
A
thermal loop not active, DPPM loop not active
at 300mA for ICH_SCL[1,0]=11 (charge current scaling is
–15% 450 15%
100% of ISET value)
at 40mA for ICH_SCL[1,0]=11 (charge current scaling is 100%
–20% 450 20%
of ISET value)
at 225mA range for ICH_SCL[1,0]=10 (charge current scaling
–15% 338 15%
is 75% of ISET value)
at 30mA for ICH_SCL[1,0]=10 (charge current scaling is 75%
–20% 338 20%
of ISET value)
K
ISET
Fast charge current factor AΩ
at 150mA for ICH_SCL[1,0]=01 (charge current scaling is 50%
–10% 225 10%
of ISET value)
at 20mA for ICH_SCL[1,0]=01 (charge current scaling is 50%
–15% 225 15%
of ISET value)
at 75mA for ICH_SCL[1,0]=00 (charge current scaling is 25%
–10% 112 10%
of ISET value)
at 10mA for ICH_SCL[1,0]=00 (charge current scaling is 25%
–20% 112 20%
of ISET value)
for I_PRE[1,0]=11 (pre-charge current scaling is 20% of charge
0.15×I
CHG
0.2×I
CHG
0.25×I
CHG
current)
for I_PRE[1,0]=10 (pre-charge current scaling is 15% of charge
0.11×I
CHG
0.15×I
CHG
0.19×I
CHG
current)
I
PRECHG
Pre-charge current
for I_PRE[1,0]=01 (pre-charge current scaling is 10% of charge
0.07×I
CHG
0.1×I
CHG
0.13×I
CHG
current)
for I_PRE[1,0]=00 (pre-charge current scaling is 5% of charge
0.03×I
CHG
0.05×I
CHG
0.08×I
CHG
current)
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