LT1579-3.3 データシートの表示（PDF） - Linear Technology
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LT1579-3.3 Datasheet PDF : 20 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
Ground Pin Current
8
VIN1 = VIN2 = VOUT(NOMINAL) + 1V
7
6
5
4
3
2
1
0
0 50 100 150 200 250 300
OUTPUT CURRENT (mA)
1579 G37
Shutdown Pin Current
2.5
VSHDN = 0V
2.0
1.5
1.0
0.5
0
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G16
Secondary Select Pin Current
1.0
VSS = 0V
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
– 50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1579 G19
Minimum Input Voltage
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
– 50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G14
Secondary Select Threshold
(Switch to VIN2)
2.0
ILOAD = 1mA
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
– 50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1579 G17
Logic Flag Output Voltage
(Output Low)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1µA
10µA 100µA
1mA
LOGIC FLAG SINK CURRENT
10mA
1579 G20
LT1579
Shutdown Pin Threshold
1.0
ILOAD = 1mA
0.8
0.6
0.4
0.2
0
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G15
Secondary Select Threshold
(Switch to VIN1)
2.0
1.8
ILOAD = 300mA
1.6
1.4
ILOAD = 1mA
1.2
1.0
0.8
0.6
0.4
0.2
0
– 50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1579 G18
Logic Flag Output Voltage
(Output Low)
1.2
1.0
ISINK = 5mA
0.8
0.6
0.4
ISINK = 20µA
0.2
0
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G21
7
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