Datasheet

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-V
LOGIC
l
1V
BATT
V
Supply Current, V
BATT
= 3V,
V
TH.A
= 1.5V
T
A
= 25°C
LTC1998CS6
LTC1998IS6
l
l
2.5 3.5
4.2
4.5
μA
μA
μA
Supply Current, V
BATT
= 5.5V,
V
TH.A
= 1.5V
T
A
= 25°C
LTC1998CS6
LTC1998IS6
l
l
3 4.3
5.2
5.5
μA
μA
μA
Monitor
Threshold Accuracy V
BATT.Th
= 2.5V, Pin 3 Shorted to Ground
l
0.6
0.8
0.85
1
%
%
V
BATT.Th
= 3V, Pin 3 Driven by Precision Voltage Source to 1V
LTC1998C
LTC1998I
l
l
0.5
0.6
0.61
0.71
%
%
V
BATT.Th
= 3V, V
TH.A
= 1V (Note 5)
Programmed with 1% Max External Resistors
LTC1998C
LTC1998I
l
l
0.8
0.9
1
1.1
%
%
V
BATT.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
%
%
V
BATT.Th
= 3.25V, V
TH.A
= 1.5V (Note 5)
Programmed with 1% Max External Resistors
LTC1998C
LTC1998I
l
l
0.9
1
1.1
1.3
%
%
Hysteresis Accuracy V
HYST
≤ 250mV
250mV ≤ V
HYST
≤ 750mV
l
l
–5
±5
5mV
mV
Allowable Hysteresis Range (Note 2)
l
10 750 mV
Propagation Delay C
OUT
= 100pF
Overdrive = 10mV
Overdrive = 100mV
350
150
μs
μs
Threshold Adjust Pin Leakage, I
TH.A
V
TH.A
≤ 1.5V
l
0.01 1 nA
Hysteresis Adjust Pin Leakage, I
H.A
V
H.A
≤ 1.5V
l
0.01 1 nA
Output
BATTLO High Voltage I
OUT
= –1mA, V
LOGIC
≥ 1.5V
l
V
LOGIC
– 0.3 V
BATTLO Low Voltage I
OUT
= 1mA, V
BATT
≥ 2V
l
0.2 V
BATTLO Low Voltage I
OUT
= 0.25mA, V
BATT
= 1V
l
0.3 V
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
GND
= 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 specifi ed performance from
0°C to 70°C. The LTC1998C is designed, characterized and expected to
meet specifi ed performance from –40°C to 85°C but is not tested or QA
sampled at these temperatures. The LTC1998I is guaranteed to meet
specifi ed performance from –40°C to 85°C.
Note 5: This parameter is not 100% tested.