lt3083idf Linear Technology Corporation, lt3083idf Datasheet - Page 8

• Manufacturer Part Number: lt3083idf
• Description: Lt3083 - Adjustable 3a Single Resistor Low Dropout Regulator
• Manufacturer: Linear Technology Corporation

LT3083
TYPICAL PERFORMANCE CHARACTERISTICS
8
100
90
80
70
60
50
40
30
20
10
0
10
Ripple Rejection, Single Supply
C
C
RIPPLE = 50mV
V
OUT
SET
IN
I
LOAD
– V
100
I
= 0.1μF CERAMIC
= 10μF CERAMIC
LOAD
CONTROL
100μV/DIV
= 0.5A
= 1.5A
V
1k
FREQUENCY (Hz)
OUT
80
79
78
77
76
75
74
73
72
71
70
P-P
= V
–50
Ripple Rejection (120Hz)
V
C
I
OUT(NOMINAL)
Output Voltage Noise
I
LOAD
LOAD
V
RIPPLE = 500mV
I
C
10k
OUT
SET
LOAD
IN
SET
–25
= V
= 0.1μF, C
= 1V, R
= 3A
= 0.1A
= 0.1μF, C
= 0.5A
100k
CONTROL
0
SET
TEMPERATURE (°C)
+ 2V
OUT
25
OUT
TIME 1ms/DIV
= 20k
1M
= V
P-P
= 10μF
3083 G25
OUT(NOMINAL)
= 10μF
, ƒ = 120Hz
50
10M
75
100 125
+ 2V
120
105
15
90
75
60
45
30
0
10
3083 G28
3083 G30
Ripple Rejection, Dual Supply,
V
I
LOAD
C
C
V
V
CONTROL
OUT
SET
IN
CONTROL
150
= V
100
= 0.1μF
= 1.5A
= 10μF CERAMIC
OUT(NOMINAL)
I
LOAD
= V
Pin
1k
OUT(NOMINAL)
FREQUENCY (Hz)
= 0.1A
10k
+ 1V
1000
100k
+ 2V
100
–12
–15
10
21
18
15
12
–3
–6
–9
9
6
3
0
10
10
Noise Spectral Density
Error Amplifi er Gain and Phase
PHASE
GAIN
1M
T
3083 G26
I
I
I
100
LOAD
LOAD
LOAD
A
100
= 25°C, unless otherwise noted.
10M
= 0.5A
= 1.5A
= 3A
FREQUENCY (Hz)
FREQUENCY (Hz)
1k
1k
120
105
15
90
75
60
45
30
0
10k
10
Ripple Rejection, Dual Supply,
IN Pin
C
C
V
V
OUT
SET
IN
CONTROL
= V
10k
100
= 0.1μF
100k
= 10μF CERAMIC
OUT(NOMINAL)
I
LOAD
= V
3083 G29
3083 G31
1k
OUT(NOMINAL)
FREQUENCY (Hz)
= 1.5A
100k
1M
100
10
1
0
–36
–72
–108
–144
–180
–216
–360
–396
36
–252
–288
–324
I
LOAD
10k
I
+ 1V
LOAD
= 0.5A
= 0.1A
100k
+ 2V
1M
3083 G27
3083f
10M