Standalone Linear Li-ion Battery Charger with Thermal Regulation
ELECTRICAL CHARACTERISTICS
(CONTINUED)
FSP4054
The * denotes specifications which apply over the full operating temperature range, otherwise specifications are at
TA=25
°C
. Vcc=5V, unless otherwise noted.
SYMBO
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
L
C/10 termination current
threshold
I
TERM
*R
PROG
=10k (Note 4)
*R
PROG
=2k
*R
PROG
=10k, current mode
0.085
0.10
0.115
mA/mA
PROG pin voltage
V
PROG
0.93
1.0
1.07
V
CHRG pin weak pull-down
I
CHRG
V
CHRG
=5V
8
20
35
uA
current
CHRG pin output low voltage
I
CHRG
=5mA
0.35
0.6
V
Recharge battery threshold
∆V
RECHRG
V
FLOAT
-V
RECHRG
100
150
200
mV
voltage
Junction temperature in
°C
T
LIM
120
constant temperature mode
Power FET “ON” resistance
R
ON
600
mΩ
(between Vcc and V
BAT
)
Soft-start time
tss
=0 to I
BAT
=1000V/R
PROG
100
us
Recharge comparator filter
VI
BAT
high to low
0.75
2
4.5
ms
t
RECHARGE
time
Termination comparator filter
T
TERM
I
BAT
falling below I
CHRG
/10
400
1000 2500
us
time
PROG pin pull-up current
I
PROG
3
uA
Note 3: Supply current includes PROG pin current (approximately 100uA) but does not include any current delivered
to the battery through the BAT pin (approximately 100mA)
Note 4: I
TERM
is expressed as a function of measured full charge current with indicated PROG resistor
6/15
2007-7-3
FOSLINK [ FOSLINK SEMICONDUCTOR CO.,LTD ]
