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LTC1998 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC1998
Description  SOT-23 Comparator and Voltage Reference for Battery Monitoring
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1998 Datasheet(HTML) 3 Page - Linear Technology

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LTC1998
3
1998fb
ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply
Supply Voltage Range-BATT
l
1.5
5.5
V
Supply Voltage Range-VLOGIC
l
1VBATT
V
Supply Current, VBATT = 3V,
VTH.A = 1.5V
TA = 25°C
LTC1998CS6
LTC1998IS6
l
l
2.5
3.5
4.2
4.5
μA
μA
μA
Supply Current, VBATT = 5.5V,
VTH.A = 1.5V
TA = 25°C
LTC1998CS6
LTC1998IS6
l
l
3
4.3
5.2
5.5
μA
μA
μA
Monitor
Threshold Accuracy
VBATT.Th = 2.5V, Pin 3 Shorted to Ground
l
0.6
0.8
0.85
1
%
%
VBATT.Th = 3V, Pin 3 Driven by Precision Voltage Source to 1V
LTC1998C
LTC1998I
l
l
0.5
0.6
0.61
0.71
%
%
VBATT.Th = 3V, VTH.A = 1V (Note 5)
Programmed with 1% Max External Resistors
LTC1998C
LTC1998I
l
l
0.8
0.9
1
1.1
%
%
VBATT.Th = 3.25V, Pin 3 Driven by Precision Voltage Source to 1.5V
LTC1998C
LTC1998I
l
l
0.6
0.7
0.65
0.85
%
%
VBATT.Th = 3.25V, VTH.A = 1.5V (Note 5)
Programmed with 1% Max External Resistors
LTC1998C
LTC1998I
l
l
0.9
1
1.1
1.3
%
%
Hysteresis Accuracy
VHYST ≤ 250mV
250mV ≤ VHYST ≤ 750mV
l
l
–5
±5
5mV
mV
Allowable Hysteresis Range (Note 2)
l
10
750
mV
Propagation Delay
COUT = 100pF
Overdrive = 10mV
Overdrive = 100mV
350
150
μs
μs
Threshold Adjust Pin Leakage, ITH.A
VTH.A ≤ 1.5V
l
0.01
1
nA
Hysteresis Adjust Pin Leakage, IH.A
VH.A ≤ 1.5V
l
0.01
1
nA
Output
BATTLO High Voltage
IOUT = –1mA, VLOGIC ≥ 1.5V
l VLOGIC – 0.3
V
BATTLO Low Voltage
IOUT = 1mA, VBATT ≥ 2V
l
0.2
V
BATTLO Low Voltage
IOUT = 0.25mA, VBATT = 1V
l
0.3
V
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VGND = 0V, unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Maximum allowable hysteresis depends on desired trip voltages.
See application notes for details.
Note 3: LTC1998C and LTC1998I are guaranteed functional over the
operating temperature range of –40°C to 85°C.
Note 4: The LTC1998C is guaranteed to meet specified performance from
0°C to 70°C. The LTC1998C is designed, characterized and expected to
meet specified performance from –40°C to 85°C but is not tested or QA
sampled at these temperatures. The LTC1998I is guaranteed to meet
specified performance from –40°C to 85°C.
Note 5: This parameter is not 100% tested.


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