Datasheet

LT3080
7
3080fc
Typical perForMance characTerisTics
V
CONTROL
Pin Current
Residual Output Voltage with
Less Than Minimum Load
Ripple Rejection, Single Supply
Ripple Rejection, Dual Supply,
IN Pin
Ripple Rejection, Dual Supply,
V
CONTROL
Pin
V
CONTROL
Pin Current
Ripple Rejection (120Hz)
Noise Spectral Density
INPUT-TO-OUTPUT DIFFERENTIAL (V)
0
0
CONTROL PIN CURRENT (mA)
5
10
15
20
25
6
12 18 24
3080 G19
30 36*
I
LOAD
= 1.1A
I
LOAD
= 1mA
DEVICE IN
CURRENT LIMIT
*SEE NOTE 9 IN ELECTRICAL
CHARACTERISTICS TABLE
LOAD CURRENT (A)
0
0
CONTROL PIN CURRENT (mA)
5
10
15
20
30
0.2
0.4 0.6 0.8
3080 G20
1.0 1.2
25
V
CONTROL
– V
OUT
= 2V
V
IN
– V
OUT
= 1V
T
J
= –50°C
T
J
= 125°C
T
J
= 25°C
R
TEST
(Ω)
0
OUTPUT VOLTAGE (V)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
3080 G21
2k1k
V
IN
= 20V
V
IN
= 5V
SET PIN = 0V
V
IN
V
OUT
R
TEST
V
IN
= 10V
FREQUENCY (Hz)
0
RIPPLE REJECTION (dB)
40
100
10k 100k10010 1k 1M
3080 G22
20
60
80
30
90
10
50
70
V
IN
= V
CONTROL
= V
OUT (NOMINAL)
+ 2V
RIPPLE = 50mV
P-P
C
OUT
= 2.2µF CERAMIC
I
LOAD
= 100mA
I
LOAD
= 1.1A
FREQUENCY (Hz)
0
RIPPLE REJECTION (dB)
40
100
10k 100k10010 1k 1M
3080 G23
20
60
80
30
90
10
50
70
V
IN
= V
OUT (NOMINAL)
+ 1V
V
CONTROL
= V
OUT (NOMINAL)
+2V
C
OUT
= 2.2µF CERAMIC
RIPPLE = 50mV
P-P
I
LOAD
= 100mA
I
LOAD
= 1.1A
FREQUENCY (Hz)
0
RIPPLE REJECTION (dB)
40
100
10k 100k10010 1k 1M
3080 G24
20
60
80
30
90
10
50
70
V
IN
= V
OUT (NOMINAL)
+ 1V
V
CONTROL
= V
OUT (NOMINAL)
+2V
RIPPLE = 50mV
P-P
C
OUT
= 2.2µF CERAMIC
I
LOAD
= 1.1A
TEMPERATURE (°C)
–50
70
RIPPLE REJECTION (dB)
71
73
74
75
80
77
0
50
75
3080 G25
72
78
79
76
–25 25
100
125
150
SINGLE SUPPLY OPERATION
V
IN
= V
OUT(NOMINAL)
+ 2V
RIPPLE = 500mV
P-P
, f = 120Hz
I
LOAD
= 1.1A
C
SET
= 0.1µF, C
OUT
= 2.2µF
FREQUENCY (Hz)
1
ERROR AMPLIFIER NOISE
SPECTRAL DENSITY (nV/√Hz)
REFERENCE CURRENT NOISE
SPECTRAL DENSITY (pA/ √Hz)
10k
10k 100k10010 1k
3080 G26
100
10
1k
0.1
1k
10
1.0
100