Datasheet

LTC1443/LTC1444/LTC1445
5
144345fe
Typical perForMance characTerisTics
Supply Current vs Supply Voltage Supply Current vs Temperature
LTC1444/LTC1445 Reference
Voltage vs Temperature
LTC1443 Reference Voltage
vs Temperature
LTC1443 Reference Output
Voltage vs Output Load Current
LTC1444/LTC1445
Hysteresis Control
V
REF
– V
HYST
(mV)
0
IN
+
– IN
–
(mV)
–20
0
20
30
50
144345 G01
–40
–60
–80
10 20 40
40
60
80
SUPPLY VOLTAGE (V)
1.0
4.0
SUPPLY CURRENT (µA)
4.2
4.4
4.6
4.8
5.0
5.2
1.5 2.0 2.5 3.0
144345 G02
T
A
= 25°C
TEMPERATURE (°C)
–60
SUPPLY CURRENT (µA)
20
5.8
5.4
5.0
4.6
4.2
3.8
3.4
3.0
144345 G03
–20 60
–40
40
0 80
100 120
IN
+
= (IN
–
+ 100mV)
V
–
= GND (LTC1443)
V
+
= 3V
V
–
= 0V
V
+
= 5V
V
–
= 0V
V
+
= 5V
V
–
= –5V
TEMPERATURE (°C)
–60
1.208
REFERENCE VOLTAGE (V)
1.212
1.216
1.220
1.224
–40 –20 0 20
144345 G04
40 60 80 100 120
V
+
= 5V
TEMPERATURE (°C)
–60
REFERENCE VOLTAGE (V)
1.186
1.184
1.182
1.180
1.178
1.176
1.174
1.172
1.170
100
144345 G05
–20
20
60
80
–40
0
40
120 140
V
+
= 5V
V
–
= GND
LOAD CURRENT (mA)
REFERENCE VOLTAGE (V)
1.184
1.183
1.182
1.181
1.180
1.179
1.178
0.2 0.4 0.6 0.8
144345 G06
1.00.10 0.3 0.5 0.7 0.9
V
+
= 5V
V
–
= GND
T
A
= 25°C
SOURCE
LTC1443 Reference Output
Voltage vs Output Load Current
Comparator Output Voltage High
vs Load Current
Comparator Output Voltage Low
vs Load Current
LOAD CURRENT (µA)
0
REFERENCE OUTPUT VOLTAGE (V)
20
1.194
1.192
1.190
1.188
1.186
1.184
1.182
1.180
144345 G07
10 30
5
25
15 35
40 45
V
+
= 5V
V
–
= GND
T
A
= 25°C
SINK
LOAD CURRENT (mA)
0
1.0
OUTPUT VOLTAGE HIGH (V)
2.0
3.0
4.0
5.0
10 20 30 40
144345 G08
50 60
V
+
= 5V
V
+
= 3V
V
+
= 2V
T
A
= 25°C
LOAD CURRENT (mA)
0
OUTPUT VOLTAGE LOW (V)
1.5
2.0
2.5
30 50 80
144345 G09
1.0
0.5
0
10 20
40
60 70
V
+
= 2V V
+
= 3V V
+
= 5V
T
A
= 25°C