LTC1730-4 LINER [Linear Technology], LTC1730-4 Datasheet - Page 4

• Manufacturer Part Number: LTC1730-4
• Description: Lithium-Ion Battery Pulse Charger with Overcurrent Protection
• Manufacturer: LINER [Linear Technology]

LTC1730-4/LTC1730-4.2
4
TYPICAL PERFOR A CE CHARACTERISTICS
0.50
0.45
0.40
0.35
0.30
0.25
0.20
50
45
40
35
30
25
20
–50
5
Trickle Charge Current vs Input
Supply Voltage
Internal Switch On-Resistance vs
Temperature
T A = 25 C
V
BAT
–25
6
= 4V
7
0
TEMPERATURE ( C)
25
300
250
200
150
100
8
V
50
CC
0
–50
Battery Recharge Threshold Offset
from V
(V)
9
V
50
CC
–25
= 6V
10
75
BAT
0
W
vs Temperature
100
11
1730 G01
1730 G05
25
TEMPERATURE ( C)
U
12
125
50
75
100 125 150
2.50
2.48
2.46
2.44
2.42
2.40
115
110
105
100
95
90
85
80
–50
–50
Trickle Charge Threshold Voltage
vs Temperature
Timer Accuracy vs Temperature
1730 G09
V
V
C
CC
CC
TIMER
–25
–25
= 6V
= 6V
= 0.1 F
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
25
25
50
50
75
75
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
–50
CHRG Pin Output Low Voltage vs
Temperature
100
100 125
1730 G02
1730 G06
–25
125
0
TEMPERATURE ( C)
25
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
50
45
40
35
30
25
20
–50
–50
Trickle Charge Current vs
Temperature
Overcurrent vs Temperature
V
R
50
V
CC
SEN
CC
–25
–25
= 6V
= 6V
= 0.1
75
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
100
1730 G08
25
25
125
50
50
75
75
100
100
1730 G07
1730 G03
1730f
125
125