LTC4054-4.2/LTC4054X-4.2
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Trickle Charge Current vs
CHRG Pin Current vs Temperature
(Weak Pull-Down State)
Trickle Charge Current
vs Temperature
Supply Voltage
28
25
23
19
16
13
10
50
40
30
20
10
0
50
V
V
V
= 5V
CC
R = 2k
PROG
R
= 2k
= 4.3V
PROG
BAT
CHRG
= 5V
40
30
20
10
0
V
V
= 5V
BAT
V
T
= 2.5V
CC
BAT
= 25°C
= 2.5V
A
R = 10k
PROG
R
= 10k
PROG
25
–50
0
25
50
75
100
–50
0
50
75
100
–25
–25
4.0
4.5
5.0
5.5
(V)
6.0
6.5
7.0
TEMPERATURE (°C)
TEMPERATURE (°C)
V
CC
4054 G13
4054 G14
4054 G15
Trickle Charge Threshold vs
Temperature
Charge Current vs Supply Voltage
Charge Current vs Battery Voltage
600
500
400
300
200
100
0
3.000
2.975
2.950
2.925
2.900
2.875
2.850
2.825
2.800
600
500
400
300
200
100
0
V
= 5V
PROG
CC
R = 2k
PROG
T
= 0°C
R
= 10k
A
T
= 40°C
ONSET OF
A
THERMAL
REGULATION
V
T
JA
= 4V
T
= 25°C
BAT
= 25°C
A
A
θ
= 80°C/W
R
= 10k
PROG
V
= 5V
CC
JA
θ
= 125°C/W
R
= 2k
PROG
4.0
5.0
5.5
6.0
6.5
7.0
–50
0
25
50
75
100
4.2
4.5
–25
2.7
3.0
3.3
3.6
3.9
4.5
TEMPERATURE (°C)
V
(V)
V
(V)
BAT
CC
4054 G18
4054 G16
4054 G17
Power FET “ON” Resistance
vs Temperature
Charge Current vs Ambient
Temperature
Recharge Voltage Threshold
vs Temperature
4.11
4.09
4.07
4.05
4.03
4.01
3.99
600
500
400
300
200
100
0
700
650
600
550
500
450
400
350
V
I
= 4.2V
CC
BAT
R
V
= 5V
PROG
CC
R
= 2k
= 100mA
PROG
R
= 10k
= 2k
PROG
ONSET OF
THERMAL
REGULATION
V
V
θ
= 5V
BAT
= 80°C/W
CC
= 4V
JA
R
= 10k
PROG
50
100 125
50
TEMPERATURE (°C)
100
50
TEMPERATURE (°C)
100 125
–50 –25
0
25
75
–50 –25
0
25
75
–50 –25
0
25
75
TEMPERATURE (°C)
4054 G20
4054 G19
4054 G21
405442xf
5
Linear [ Linear ]
