LTC1443_12 Datasheet, PDF (5/14 Pages) Linear Technology – Ultralow Power Quad

LTC1443/LTC1444/LTC1445
Typical Performance Characteristics
LTC1444/LTC1445
Hysteresis Control
80
60
40
20
0
–20
–40
–60
–80
0
10
20
30
40
50
V_REF – V_HYST (mV)
144345 G01
LTC1444/LTC1445 Reference
Voltage vs Temperature
1.224 _{V+ = 5V}
1.220
1.216
1.212
1.208
–60 –40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
144345 G04
LTC1443 Reference Output
Voltage vs Output Load Current
1.194
1.192
V⁺ = 5V
V^– = GND
T_A = 25°C
1.190
1.188
1.186
SINK
1.184
1.182
1.180
0 5 10 15 20 25 30 35 40 45
LOAD CURRENT (µA)
144345 G07
Supply Current vs Supply Voltage
5.2
T_A = 25°C
5.0
4.8
4.6
4.4
4.2
4.0
1.0
1.5
2.0
2.5
3.0
SUPPLY VOLTAGE (V)
144345 G02
LTC1443 Reference Voltage
vs Temperature
1.186 _{V+ = 5V}
1.184 ^{V– = GND}
1.182
1.180
1.178
1.176
1.174
1.172
1.170
–60 –40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
144345 G05
Comparator Output Voltage High
vs Load Current
5.0
T_A = 25°C
V⁺ = 5V
4.0
3.0
V⁺ = 3V
2.0
V⁺ = 2V
1.0
0
10 20 30 40 50 60
LOAD CURRENT (mA)
144345 G08
Supply Current vs Temperature
5.8 _{IN+ = (IN– + 100mV)}
V^– = GND (LTC1443)
5.4
5.0
V⁺ = 5V
V^– = 0V
4.6
V⁺ = 5V
V^– = –5V
4.2
3.8
V⁺ = 3V
V^– = 0V
3.4
3.0
–60 –40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
144345 G03
LTC1443 Reference Output
Voltage vs Output Load Current
1.184
1.183
V⁺ = 5V
V^– = GND
T_A = 25°C
1.182
1.181
1.180
SOURCE
1.179
1.178
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD CURRENT (mA)
144345 G06
Comparator Output Voltage Low
vs Load Current
2.5
T_A = 25°C
2.0
1.5 _{V+ = 2V}
1.0
V⁺ = 3V
V⁺ = 5V
0.5
0
0 10 20 30 40 50 60 70 80
LOAD CURRENT (mA)
144345 G09
144345fe
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