Datasheet

4
LTC4065/LTC4065A
4065fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Battery Regulation (Float) Voltage
vs Battery Charge Current
I
BAT
(mA)
0
V
FLOAT
(V)
4.19
4.20
4.21
300
500
4065 G01
4.18
4.17
4.16
100 200 400
4.22
4.23
4.24
V
CC
= 5V
T
A
= 25°C
R
PROG
= 2k
TEMPERATURE (°C)
–50
V
FLOAT
(V)
4.23
25
4065 G02
4.20
4.18
–25 0 50
4.17
4.16
4.24
4.22
4.21
4.19
75 100
SUPPLY VOLTAGE (V)
4
V
FLOAT
(V)
4.20
4.21
4.22
6
4065 G03
4.19
4.18
4.16
4.5
5
5.5
4.17
4.24
4.23
T
A
= 25°C
I
BAT
= 2mA
R
PROG
= 2k
Battery Regulation (Float) Voltage
vs Temperature
Regulated Output (Float) Voltage
vs Supply Voltage
Charge Current vs Supply Voltage
(Constant Current Mode) Charge Current vs Battery Voltage
Charge Current vs Temperature
with Thermal Regulation
(Constant Current Mode)
SUPPLY VOLTAGE (V)
4
0
I
BAT
(mA)
25
50
75
100
125
150
175
200
4.5 5 5.5 6
4065 G04
R
PROG
= 10k
V
BAT
= 3.8V
T
A
= 25°C
V
BAT
(V)
0
0
I
BAT
(mA)
100
200
300
400
500
600
1234
4065 G05
5
V
CC
= 5V
T
A
= 25°C
R
PROG
= 2k
TEMPERATURE (°C)
–50
0
I
BAT
(mA)
100
200
300
400
050
100
150
4065 G06
500
600
THERMAL CONTROL
LOOP IN OPERATION
V
CC
= 5V
V
BAT
= 3.8V
R
PROG
= 2k
PROG Pin Voltage vs Temperature
(Constant Current Mode)
PROG Pin Voltage
vs Charge Current
Power FET On Resistance
vs Temperature
TEMPERATURE (°C)
–50
V
PROG
(V)
1.01
1.02
25 75
4065 G07
1.00
–25 0
50 100
0.99
0.98
V
CC
= 5V
V
BAT
= 3.8V
R
PROG
= 10k
I
BAT
(mA)
0
0
V
PROG
(V)
0.2
0.4
0.6
0.8
1.0
1.2
100 200 300 400
4065 G08
500
V
CC
= 5V
T
A
= 25°C
R
PROG
= 2k
TEMPERATURE (°C)
–50
300
R
DS
(mΩ)
350
400
450
500
550
–25
02550
4065 G09
75 100
V
CC
= 4V
I
BAT
= 400mA