LTC1731-84 データシートの表示（PDF） - Linear Technology
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LTC1731-84 Datasheet PDF : 12 Pages
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LTC1731-8.2/LTC1731-8.4
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 9V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VASD
VDIS
IPROG
VPROG
ICHRG
VCHRG
IC/10
tTIMER
VCLAMP
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
(VCC – VBAT) Falling
(VCC – VBAT) Rising
VDIS = (VCC – VTIMER)
Internal Pull-Up Current, No RPROG
PROG Pin Source Current, ∆VPROG ≤ 5mV
RPROG =19.6k
VCHRG = 1V
ICHRG = 5mA
RPROG = 19.6k, RSENSE = 0.2Ω
CTIMER = 0.01µF
VCLAMP = VCC – VDRV, IDRIVE = 50µA
30 54 90
mV
40 69 100
mV
q
0.4
V
2.5
µA
q 300
µA
2.457
V
50 100 150
µA
0.6 1.2
V
q 25 50 100
mA
10
%
6.5
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1731E-8.2/LTC1731E-8.4 are 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. Consult
factory for I grade parts.
TYPICAL PERFOR A CE CHARACTERISTICS
Trickle Charge Current
vs VCC
60
RPROG = 19.6K
RSENSE = 0.2Ω
VBAT = 4V
55 TA = 25°
Trickle Charge Current
vs Temperature
60
RPROG = 19.6K
RSENSE = 0.2Ω
VBAT = 4V
55 VCC = 9V
50
50
45
45
40
9
10
11
VCC (V)
12
1731 G01
40
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1731 G06
Trickle Charge Threshold Voltage
vs VCC
4.96
RPROG = 19.6K
4.95 TA = 25°
4.94
4.93
4.92
4.91
4.90
4.89
4.88
9
10
11
VCC (V)
12
1731 G08
sn1731 17318fs
3
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