LTC1731-8.2/LTC1731-8.4
ABSOLUTE
MAXIMUM
RATINGS
Input Supply Voltage (V
CC
) ................................... 13.2V
SENSE, DRV, BAT, TIMER, PROG ............ – 0.3V to V
CC
CHRG ..................................................... – 0.3V to 13.2V
PACKAGE/ORDER INFORMATION
TOP VIEW
BAT
CHRG
TIMER
GND
1
2
3
4
8
7
6
5
SENSE
V
CC
DRV
PROG
ORDER PART
NUMBER
BAT 1
LTC1731EMS8-8.2
LTC1731EMS8-8.4
MS8 PART MARKING
LTSW
LTPE
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 200°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
q
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 9V unless otherwise noted.
SYMBOL
V
CC
I
CC
PARAMETER
Input Supply Voltage
Input Supply Current
Charger On, Current Mode
Shutdown Mode
Sleep Mode (Battery Drain Current)
LTC1731-8.2 (9V
≤
V
CC
≤
12V)
LTC1731-8.4 (9V
≤
V
CC
≤
12V)
R
PROG
= 19.6k, R
SENSE
= 0.2Ω
R
PROG
= 19.6k, R
SENSE
= 0.2Ω
R
PROG
= 97.6k, R
SENSE
= 0.2Ω
V
BAT
= 4V, R
PROG
= 19.6k, I
TRIKL
= (V
CC
– V
SENSE
)/0.2Ω
BAT Rising
V
CC
Rising
V
CC
Falling
PROG Pin Rising
PROG Pin Falling
V
DRV
= V
CC
– 2V
CONDITIONS
q
q
q
q
q
q
q
q
q
ELECTRICAL CHARACTERISTICS
V
BAT
I
BAT
Regulated Output Voltage
Current Mode Charge Current
I
TRIKL
V
TRIKL
V
UV
∆V
UV
V
MSD
I
DRV
Trickle Charge Current
Trickle Charge Threshold Voltage
V
CC
Undervoltage Lockout Voltage
V
CC
Undervoltage Lockout Hysteresis
Manual Shutdown Threshold Voltage
Drive Pin Current
2
U
U
W
W W
U
W
(Note 1)
Operating Temperature Range (Note 2) .....– 40° to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
TOP VIEW
8
7
6
5
SENSE
V
CC
DRV
PROG
ORDER PART
NUMBER
LTC1731ES8-8.2
LTC1731ES8-8.4
S8 PART MARKING
173182
173184
CHRG 2
TIMER 3
GND 4
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 125°C/W
MIN
8.8
TYP
1
1
15
MAX
12
3
2
30
8.282
8.484
535
585
130
100
5.1
8.8
UNITS
V
mA
mA
µA
V
V
mA
mA
mA
mA
V
V
mV
V
V
µA
8.118
8.316
465
415
70
30
4.7
8.2
8.4
500
500
100
50
4.95
8.2
200
2.457
2.446
26
sn1731 17318fs
LITEON [ LITE-ON TECHNOLOGY CORPORATION ]
