lt3080 Linear Technology Corporation, lt3080 Datasheet - Page 6

• Manufacturer Part Number: lt3080
• Description: Adjustable 1.1a Single Resistor Low Dropout Regulator
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
LT3080
6
100
25
20
15
10
80
70
60
50
40
30
20
10
90
5
0
0
10
*SEE NOTE 9 IN ELECTRICAL
0
V
Ripple Rejection - Single Supply
CHARACTERISTICS TABLE
V
CONTROL
C
IN
OUT
I
INPUT-TO-OUTPUT DIFFERENTIAL (V)
LOAD
I
= V
LOAD
6
= 2.2μF CERAMIC
100
CONTROL
I
LOAD
= 1.1A
= 1mA
Pin Currrent
12
= 1.1A
FREQUENCY (Hz)
76
70
80
79
78
77
75
74
73
72
71
= V
1k
DEVICE IN
CURRENT LIMIT
–50
Ripple Rejection (120Hz)
OUT (NOMINAL)
18
–25
RIPPLE = 50mV
10k
24
I
LOAD
0
TEMPERATURE (°C)
SINGLE SUPPLY OPERATION
V
RIPPLE = 500mV
I
C
LOAD
100k
IN
SET
W
+ 2V
= 100mA
25
= V
30
= 0.1μF, C
= 1.1A
3080 G18
OUT(NOMINAL)
P–P
3080 G21
50
U
36*
1M
75
OUT
P-P
= 2.2μF
100 125 150
, f=120Hz
+ 2V
100
30
25
20
15
10
80
70
60
50
40
30
20
10
3080 G24
90
5
0
0
10
V
0
Ripple Rejection - Dual Supply
- V
CONTROL
V
V
V
V
C
RIPPLE = 50mV
CONTROL
IN
IN
CONTROL
OUT
CONTROL
– V
= V
0.2
= 2.2μF CERAMIC
100
OUT
OUT (NOMINAL)
I
– V
= V
LOAD
Pin Current
= 1V
LOAD CURRENT (A)
0.4
OUT
Pin
FREQUENCY (Hz)
OUT (NOMINAL)
T
P–P
J
= 1.1A
1k
= –50°C
= 2V
T
J
0.6
= 125°C
+ 1V
10k
100
10k
0.8
10
1k
+2V
I
1
LOAD
10
Noise Spectral Density
T
J
100k
= 25°C
= 100mA
1.0
3080 G19
3080 G22
100
1.2
1M
FREQUENCY (Hz)
1k
100
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
80
70
60
50
40
30
20
10
90
0
0
10
Residual Output Voltage with
Less Than Minimum Load
0
Ripple Rejection - Dual Supply
- IN Pin
V
V
10k
RIPPLE = 50mV
C
I
SET PIN = 0V
V
LOAD
IN
CONTROL
OUT
IN
= V
= 2.2μF CERAMIC
= 1.1A
100
V
OUT (NOMINAL)
IN
3080 G25
= V
= 10V
100k
OUT (NOMINAL)
FREQUENCY (Hz)
1k
100
10
1.0
0.1
P–P
1k
R
TEST
1k
+ 1V
R
TEST
V
(Ω)
V
10k
OUT
IN
= 5V
+2V
V
100k
IN
= 20V
3080 G20
3080 G23
3080f
1M
2k