LTC1443/LTC1444/LTC1445
TYPICAL PERFOR A CE CHARACTERISTICS
LTC1444/LTC1445
Hysteresis Control
80
60
SUPPLY CURRENT (µA)
5.2
T
A
= 25°C
5.0
SUPPLY CURRENT (µA)
5.4
5.0
4.6
4.2
3.8
3.4
3.0
–60 –40 –20
40
IN
+
– IN
–
(mV)
20
0
–20
–40
–60
–80
0
10
30
V
REF
– V
HYST
(mV)
20
40
50
LTC1443/44/45 • TPC01
LTC1444/LTC1445 Reference
Voltage vs Temperature
1.224
V
+
= 5V
1.186
1.184
REFERENCE VOLTAGE (V)
REFERENCE VOLTAGE (V)
1.182
1.180
1.178
1.176
1.174
1.172
REFERENCE VOLTAGE (V)
1.220
1.216
1.212
1.208
–60 –40 –20
0 20 40 60 80 100 120
TEMPERATURE (°C)
LTC1443/44/45 • TPC04
LTC1443 Reference Output
Voltage vs Output Load Current
1.194
1.192
1.190
1.188
1.186
1.184
1.182
1.180
0
5
10
15 20 25 30 35
LOAD CURRENT (µA)
40
45
SINK
V
+
= 5V
V
–
= GND
T
A
= 25°C
REFERENCE OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE HIGH (V)
4.0
OUTPUT VOLTAGE HIGH (V)
LTC1443/44/45 • TPC07
4
U W
Supply Current vs Supply Voltage
5.8
Supply Current vs Temperature
IN
+
= (IN
–
+ 100mV)
V
–
= GND (LTC1443)
V
+
= 5V
V
–
= 0V
V
+
= 5V
V
–
= –5V
V
+
= 3V
V
–
= 0V
4.8
4.6
4.4
4.2
4.0
1.0
1.5
2.0
2.5
SUPPLY VOLTAGE (V)
3.0
0 20 40 60 80 100 120
TEMPERATURE (°C)
LTC1443/44/45 • TPC03
LTC1443/44/45 • TPC02
LTC1443 Reference Voltage
vs Temperature
1.184
V
+
= 5V
V
–
= GND
LTC1443 Reference Output
Voltage vs Output Load Current
V
+
= 5V
V
–
= GND
T
A
= 25°C
1.183
1.182
1.181
1.180
1.179
1.178
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
LTC1443/44/45 • TPC05
SOURCE
1.170
–60 –40 –20
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD CURRENT (mA)
LTC1443/44/45 • TPC06
Comparator Output Voltage High
vs Load Current
5.0
T
A
= 25°C
V
+
= 5V
2.0
2.5
Comparator Output Voltage Low
vs Load Current
T
A
= 25°C
1.5
3.0
V
+
= 3V
2.0
V
+
= 2V
V
+
= 2V
V
+
= 3V
V
+
= 5V
1.0
0.5
1.0
0
10
20
30
40
LOAD CURRENT (mA)
50
60
0
0
10
50 60
20 30 40
LOAD CURRENT (mA)
70
80
LTC1443/44/45 • TPC08
LTC1443/44/45 • TPC09
LINER [ LINEAR TECHNOLOGY ]
