Datasheet
LT1083/LT1084/LT1085
7
108345fg
TYPICAL PERFORMANCE CHARACTERISTICS
INPUT/OUTPUT DIFFERENTIAL (V)
0
0
MINIMUM OPERATING CURRENT (mA)
1
3
4
5
10
7
10
20
25
LT1083/4/5 ADJ G10
2
8
9
6
5
15
30
35
T
J
= –55°C
T
J
= 150°C
T
J
= 25°C
TEMPERATURE (°C)
–50
1.27
1.26
1.25
1.24
1.23
REFERENCE VOLTAGE (V)
050
100
150
LT1083/4/5 ADJ G11
–25 25
75
125
TEMPERATURE (°C)
–50
100
90
80
70
60
50
40
30
20
10
0
ADJUST PIN CURRENT (μA)
050
100
150
LT1083/4/5 ADJ G12
–25 25
75
125
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
100
90
80
70
60
50
40
30
20
10
0
10 1k 10k 100k
1083/4/5 ADJ G13
100
V
RIPPLE
≤ 0.5V
P-P
V
RIPPLE
≤ 3V
P-P
(V
IN
– V
OUT
) ≥ 3V
(V
IN
– V
OUT
) ≥ V
DROPOUT
C
ADJ
= 200μF AT FREQUENCIES < 60Hz
C
ADJ
= 25μF AT FREQUENCIES > 60Hz
I
OUT
= 7A
OUTPUT CURRENT (A)
0
RIPPLE REJECTION (dB)
100
90
80
70
60
50
40
30
20
10
0
2
4
5
1083/4/5 ADJ G14
13
6
7
8
V
OUT
= 5V
C
ADJ
= 25μF
C
OUT
= 25μF
f
R
= 120Hz
V
RIPPLE
≤ 3V
P-P
f
R
= 20kHz
V
RIPPLE
≤ 0.5V
P-P
CASE TEMPERATURE (°C)
50
POWER (W)
100
90
80
70
60
50
40
30
20
10
0
LT1083/4/5 ADJ G15
60 70 80 90 100 110 120 130 140 150
LT1083MK
LT1083CP
LT1083CK
* AS LIMITED BY MAXIMUM JUNCTION TEMPERATURE
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
100
90
80
70
60
50
40
30
20
10
0
10 1k 10k 100k
1083/4/5 ADJ G16
100
V
RIPPLE
≤ 0.5V
P-P
V
RIPPLE
≤ 3V
P-P
(V
IN
– V
OUT
) ≥ 3V
(V
IN
– V
OUT
) ≥ V
DROPOUT
C
ADJ
= 200μF AT FREQUENCIES < 60Hz
C
ADJ
= 25μF AT FREQUENCIES > 60Hz
I
OUT
= 5A
OUTPUT CURRENT (A)
0
RIPPLE REJECTION (dB)
100
90
80
70
60
50
40
30
20
10
0
2
4
5
1083/4/5 ADJ G17
13
V
OUT
= 5V
C
ADJ
= 25μF
C
OUT
= 25μF
f
R
= 120Hz
V
RIPPLE
≤ 3V
P-P
f
R
= 20kHz
V
RIPPLE
≤ 0.5V
P-P
CASE TEMPERATURE (°C)
50
POWER (W)
60
50
40
30
20
10
0
LT1083/4/5 ADJ G18
60 70 80 90 100 110 120 130 140 150
LT1084MK
LT1084CT
LT1084CP
* AS LIMITED BY MAXIMUM JUNCTION TEMPERATURE
LT1084CK
Minimum Operating Current Temperature Stability
Adjust Pin Current
LT1083
Ripple Rejection
LT1083
Ripple Rejection vs Current
LT1083
Maximum Power Dissipation*
LT1084
Maximum Power Dissipation*
LT1084
Ripple Rejection vs Current
LT1084
Ripple Rejection
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