Datasheet

LTC1998
4
1998fb
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Supply Current
vs Supply Voltage
Quiescent Supply Current
vs Temperature
Threshold Voltage
vs T hreshold Adjust Voltage
Available Hysteresis
vs Threshold Voltage
Threshold Voltage Error
vs Temperature Input Current vs Temperature
SUPPLY VOLTAGE (V)
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY CURRENT (μA)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1998 G01
T
A
= 25°C
V
LOGIC
= V
BATT
V
TH.A
= 0V
V
TH.A
= 1.5V
TEMPERATURE (°C)
–50 –30 –10 10 30 50 70 90
SUPPLY CURRENT (μA)
1998 G02
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
BATT
= V
LOGIC
= 3V
V
TH.A
= 1.5V
THRESHOLD ADJUST VOLTAGE (V)
0
THRESHOLD VOLTAGE (V)
3.5
3.0
2.5
1998 G03
0.5 1.0
1.5
LOW BATTERY THRESHOLD VOLTAGE (V)
2.5
AVAILABLE HYSTERESIS (mV)
750
500
250
0
1998 G04
2.75 3.0
3.25
TEMPERATURE (°C)
–45 15 55
1998 G05
–25 –5
35 75 95
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
% ERROR
V
TH.A
SET BY 1%
EXTERNAL R,
THRESHOLD = 3V
V
TH.A
=1V
THRESHOLD = 3V
V
TH.A
SHORTED
TO GROUND,
THRESHOLD = 2.5V
TEMPERATURE (°C)
35
0.1
INPUT CURRENT V
TH.A
, V
H.A
(pA)
1
100
1000
10000
55
75
85 125
1998 G06
10
45 65
95
105
115
V
IN
= 1.5V
V
IN
= 0.5V
V
IN
= 1V