LTC1731EMS8-4.2 Linear Technology, LTC1731EMS8-4.2 Datasheet - Page 3

• Manufacturer Part Number: LTC1731EMS8-4.2
• Description: IC CTRLR BATT CHRGR LI-ION 8MSOP
• Manufacturer: Linear Technology

Specifications of LTC1731EMS8-4.2

• 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-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
temperature range, otherwise specifications are at T
TYPICAL PERFOR A CE CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
SYMBOL
V
V
I
V
I
V
I
t
V
PROG
CHRG
C/10
TIMER
ASD
DIS
PROG
CHRG
CLAMP
60
55
50
45
40
4
Trickle Charge Current
vs Input Supply
R
R
V
T
A
BAT
PROG
SENSE
= 25 C
PARAMETER
Automatic Shutdown Threshold Voltage
Voltage Mode Disable Threshold Voltage
PROG Pin Current
PROG Pin Load Regulation
PROG Pin Voltage
CHRG Pin Weak Pull-Down Current
CHRG Pin Output Low Voltage
End of Charge Indication Current Level
TIMER Accuracy
DRV Pin Clamp Voltage
= 2V
= 19.6k
= 0.2
6
V
CC
8
(V)
10
W
1731 G01
U
12
2.470
2.465
2.460
2.455
2.450
CONDITIONS
(V
(V
V
Internal Pull-Up Current, No R
PROG Pin Source Current, V
R
V
I
R
C
V
CHRG
DIS
CHRG
TIMER
CLAMP
PROG
PROG
CC
CC
–50 –25
A
Program Pin Voltage
vs Temperature
– V
– V
= V
V
R
= 25 C. V
= 5mA
CC
PROG
= 1V
=19.6k
= 19.6k, R
= 0.1 F
= V
CC
BAT
BAT
= 6V
The
– V
CC
= 19.6k
) High to Low
) Low to High
0
– V
TIMER
TEMPERATURE ( C)
CC
SENSE
DRV
denotes the specifications which apply over the full operating
25
= 6V unless otherwise noted.
, I
DRIVE
50
= 0.2
Note 2: The LTC1731E 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. Guaranteed I grade parts are available,
consult factory.
75 100 125
= 50 A
PROG
PROG
LTC1731-4.1/LTC1731-4.2
5mV
1731 G02
150
110
105
100
95
90
–50 –25
Timer Accuracy vs Temperature
V
C
CC
TIMER
= 6V
MIN
300
= 0.1 F
30
40
50
25
0
TEMPERATURE ( C)
25
2.457
TYP
100
2.5
0.6
6.5
54
69
50
10
50
75 100 125
MAX
100
150
100
0.4
1.2
90
1731 G03
UNITS
3
150
mV
mV
mA
%
V
A
A
V
A
V
V