Datasheet

3
LTC4050
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TEMPERATURE (°C)
–50
460
I
BAT
(mA)
480
500
520
540
–25 0 25 50
LTC4050 G01
75 100 125
R
PROG
= 19.6k
R
SEN
= 0.2Ω
V
BAT
= 3V
V
CC
= 6V
V
CC
(V)
4
I
BAT
(mA)
500
505
510
LC4050 G02
495
490
480
6
810
485
520
515
R
PROG
= 19.6k
R
SEN
= 0.2Ω
V
BAT
= 3V
T
A
= 25°C
TEMPERATURE (°C)
–50
I
TRKL
(mA)
60
65
70
25 75
LTC4050 G03
55
50
–25 0
50 100 125
45
40
R
PROG
= 19.6k
R
SEN
= 0.2Ω
V
BAT
= 2V
V
CC
= 6V
V
CC
(V)
4
40
I
TRKL
(mA)
45
50
55
60
65
70
6810
LTC4050 G04
R
PROG
= 19.6k
R
SEN
= 0.2Ω
V
BAT
= 2V
T
A
= 25°C
TEMPERATURE (°C)
–50 –25
2.46
V
TRKL
(V)
2.48
2.51
0
50
75
LTC4050 G05
2.47
2.50
2.49
25
100
125
V
CC
= 6V
R
PROG
= 19.6k
V
CC
(V)
4
2.45
V
TRKL
(V)
2.47
2.48
2.49
2.50
2.51
2.52
6
8
LTC4050 G06
2.53
2.54
2.55
2.46
10
R
PROG
= 19.6k
T
A
= 25°C
Charge Current vs Temperature
Charge Current vs V
CC
Trickle Charge Current
vs Temperature
Trickle Charge Current vs V
CC
Trickle Charge Threshold Voltage
vs Temperature
Trickle Charge Threshold Voltage
vs V
CC
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
C/10
10% Charge Current Indication Level R
PROG
= 19.6k, R
SENSE
= 0.2Ω ● 25 50 100 mA
t
TIMER
TIMER Accuracy C
TIMER
= 0.1µF10%
V
RECHRG
Recharge Threshold Voltage V
BAT
from High to Low (LTC4050-4.1) 3.83 3.88 V
V
BAT
from High to Low (LTC4050-4.2) 3.93 3.98 V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC4050E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 6V unless otherwise noted.
ELECTRICAL CHARACTERISTICS