Datasheet

5
LTC1443/LTC1444/LTC1445
144345fc
RESPONSE TIME (µs)
–1
INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V)
100
0
1
64
5
LTC1443/44/45 • TPC10
0
20108
2
3
4
100mV 10mV
50mV 20mV
T
A
= 25°C
Comparator Response Time vs
Input Overdrive
Comparator Response Time vs
Input Overdrive
RESPONSE TIME (µs)
–1
INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V)
0
0
1
6
14
18
5
LTC1443/44/45 • TPC11
100
210
4
12
16
08
2
3
4
100mV
10mV
50mV
20mV
T
A
= 25°C
Comparator Short-Circuit Sink
Current vs Supply Voltage
SUPPLY VOLTAGE (V)
0
SINK CURRENT (mA)
200
180
160
140
120
100
80
60
40
20
0
8
LTC1443/44/45 • TPC12
213579
4
6
10
OUT CONNECTED TO V
+
T
A
= 25°C
Comparator Response Time vs
Load Capacitance
LOAD CAPACITANCE (nF)
0
RESPONSE TIME (µs)
12
10
8
6
4
2
80
LTC1443/44/45 • TPC14
20
40
60
100
t
PHL
t
PLH
Comparator Short-Circuit Source
Current vs Supply Voltage
SUPPLY VOLTAGE (V)
0
SOURCE CURRENT (mA)
3
5
LTC1443/44/45 • TPC13
12 4
160
140
120
100
80
60
40
20
0
OUT CONNECTED TO
V
–
= GND = 0V
TYPICAL PERFOR A CE CHARACTERISTICS
UW
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
LTC1443/44/45 • TPC07
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
LTC1443/44/45 • TPC08
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
LTC1443/44/45 • TPC09
1.0
0.5
0
10 20
40
60 70
V
+
= 2V V
+
= 3V V
+
= 5V
T
A
= 25°C