LT1579CS8-3.3 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1579CS8-3.3' PDF : 20 Pages View PDF
TYPICAL PERFORMANCE CHARACTERISTICS
Guaranteed Dropout Voltage
0.8
= TEST POINTS
0.7
TJ ≤ 125°C
0.6
0.5
TJ = 25°C
0.4
0.3
0.2
0.1
0
0 50 100 150 200 250 300
OUTPUT CURRENT (mA)
1579 G35
Quiescent Current in Shutdown
7
VIN1 = 20V
6
VIN2 = 6V
VSHDN = 0V
5
4
IVIN1
3
2
IVIN2
1
0
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G36
LT1579-5 Output Voltage
5.12
ILOAD = 1mA
5.09
5.06
5.03
5.00
4.97
4.94
4.91
4.88
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G05
Dropout Voltage
0.7
A: ILOAD = 300mA
0.6
B: ILOAD = 150mA
C: ILOAD = 100mA
A
D: ILOAD = 50mA
0.5 E: ILOAD = 10mA
F: ILOAD = 1mA
B
0.4
C
0.3
D
0.2
E
0.1
0
– 50 – 25
F
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G01
LT1579-3 Output Voltage
3.08
ILOAD = 1mA
3.06
3.04
3.02
3.00
2.98
2.96
2.94
2.92
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G03
Adjust Pin Voltage
1.54
ILOAD = 1mA
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G05
LT1579
Quiescent Current
100
90
VIN = 6V
RL = ∞ (FIXED)
80 RL = 500k (ADJUSTABLE)
70
60
OPERATING
QUIESCENT
50
CURRENT
40
30
20
STANDBY
QUIESCENT
10
CURRENT
0
– 50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G02
LT1579-3.3 Output Voltage
3.38
ILOAD = 1mA
3.36
3.34
3.32
3.30
2.28
2.26
2.24
2.22
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1579 G04
Input Current
60
IIN2
IIN1
50
40
VOUT = 5V
VIN2 = 6V
ILOAD = 0
30
20
10
0
–0.2 –0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
VIN1 – VOUT (V)
1579 G07
5
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