Datasheet

LT3083
7
3083fa
TYPICAL PERFORMANCE CHARACTERISTICS
V
CONTROL
Pin Current V
CONTROL
Pin Current
Residual Output Voltage with
Less Than Minimum Load
Line Transient Response Turn-On Response Turn-On Response
Load Transient Response Load Transient Response
T
A
= 25°C, unless otherwise noted.
0
LOAD CURRENT (A) OUTPUT VOLTAGE
DEVIATION (mV)
80
200
3083 G17
0
50
–50
100
150
0
–100
1.0
0.5
6020 40 140 160100 120 180
TIME (µs)
V
IN
= 2V
V
CONTROL
= 3V
V
OUT
= 1V
C
SET
= 0.1µF
∆I
LOAD
= 100mA TO 1A
C
OUT
= 10µF CERAMIC
C
OUT
= 22µF CERAMIC
0
IN/ V
CONTROL
VOLTAGE (V)
OUTPUT VOLTAGE
DEVIATION (mV)
80
200
3083 G19
–10
–20
5
4
6
7
3
10
0
6020 40 140 160100 120 180
TIME (µs)
V
OUT
= 1V
I
LOAD
= 10mA
C
OUT
= 10µF CERAMIC
C
SET
= 0.1µF
0
IN/ V
CONTROL
VOLTAGE (V)
OUTPUT
VOLTAGE (V)
20
50
3083 G20
0
4
1
5
6
2
3
0
1.0
0.5
–0.5
155 10 35 4025 30 45
TIME (µs)
R
SET
= 20k
C
SET
= 0
R
LOAD
= 0.33Ω
C
OUT
= 10µF CERAMIC
0
IN/ V
CONTROL
VOLTAGE (V)
OUTPUT
VOLTAGE (V)
8
20
3083 G21
0
1
4
2
3
0
1.0
0.5
–0.5
62 4 14 1610 12 18
TIME (ms)
R
SET
= 20k
C
SET
= 0.1µF
R
LOAD
= 1Ω
C
OUT
= 10µF CERAMIC
0
V
CONTROL
PIN CURRENT (mA)
2
18
3083 G22
0
10
80
70
60
50
40
30
20
4 6 8 10 12 14 16
IN-TO-OUT DIFFERENTIAL (V
IN
– V
OUT
) (V)
I
LOAD
= 3A
I
LOAD
= 1.5A
DEVICE IN
CURRENT LIMIT
0
LOAD CURRENT (A) OUTPUT VOLTAGE
DEVIATION (mV)
80 200
3083 G18
0
50
–50
150
250
–150
4
2
6020 40 140 160100 120 180
TIME (µs)
∆I
LOAD
= 500mA TO 3A
V
IN
= 2V
V
CONTROL
= 3V
V
OUT
= 1V
C
SET
= 0.1µF
C
OUT
= 22µF CERAMIC
0
V
CONTROL
PIN CURRENT (mA)
0.5
3
3083 G23
0
10
70
60
50
40
30
20
1 1.5 2 2.5
LOAD CURRENT (A)
T
J
= –50°C
T
J
= 125°C
T
J
= 25°C
V
CONTROL
– V
OUT
= 2V
V
IN
– V
OUT
= 1V
0
OUTPUT VOLTAGE (mV)
2000
3083 G24
0
100
600
500
400
300
200
500 1000 1500
R
SET
(Ω)
R
TEST
V
OUT
SET PIN = 0V
ADD 1N4148 FOR
R
TEST
< 1k
V
IN
= 20V
V
IN
= 5V
V
IN
= 10V
V
IN