LTC1731ES8-4.1 Linear Technology, LTC1731ES8-4.1 Datasheet - Page 4

• Manufacturer Part Number: LTC1731ES8-4.1
• Description: IC CTRLR BATT CHRGR LI-ION 8SOIC
• Manufacturer: Linear Technology
• Type: Charge Controllerr

Specifications of LTC1731ES8-4.1

• Function: Charge Management
• Battery Type: Li-Ion, NiCd, NiMH
• Voltage - Supply: 8.8 V ~ 12 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Output Current: 500mA
• Output Voltage: 4.1V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 12V
• Operating Temp Range: -40C to 85C
• Package Type: SOIC N
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC1731-4.1/LTC1731-4.2
TYPICAL PERFOR A CE CHARACTERISTICS
4
2.470
2.465
2.460
2.455
2.450
–50 –25
Trickle Charge Threshold Voltage
vs Temperature
V
CC
= 6V
0
TEMPERATURE ( C)
2.480
2.475
2.470
2.465
2.460
2.455
2.450
2.445
2.440
25
540
530
520
510
500
490
480
470
460
–50 –25
4
Battery Charge Current
vs Temperature
Program Pin Voltage
vs Input Supply
50
R
R
V
V
R
V
T
BAT
CC
BAT
A
PROG
SENSE
PROG
= 25 C
= 6V
= 3V
= 3V
75 100 125
= 19.6k
= 19.6k
= 0.2
0
6
W
TEMPERATURE ( C)
25
1731 G04
V
U
CC
50
8
150
(V)
75 100 125
10
110
105
100
95
90
1731 G07
1731 G09
4
Timer Accuracy vs Input Supply
V
C
T
BAT
TIMER
A
150
12
= 25 C
= 3V
= 0.1 F
6
V
CC
8
(V)
2.480
2.475
2.470
2.465
2.460
2.455
2.450
2.445
2.440
10
520
515
510
505
500
495
490
485
480
4
4
Trickle Charge Threshold Voltage
vs Input Supply
Battery Charge Current
vs Input Supply
R
T
R
R
V
T
1731 G05
A
A
PROG
BAT
PROG
SENSE
= 25 C
= 25 C
= 3V
12
= 19.6k
= 19.6k
= 0.2
6
6
V
V
60
55
50
45
40
CC
CC
–50 –25
8
8
Trickle Charge Current
vs Temperature
(V)
(V)
R
R
V
V
PROG
SENSE
BAT
CC
= 6V
= 2V
= 19.6k
= 0.2
10
10
0
TEMPERATURE ( C)
1731 G08
1731 G10
25
12
12
50
75 100 125
1731 G06
150