Linear Technology LT3081, Техническое описание

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LT3081
7
3081fc
For more information www.linear.com/LT3081
Linear Regulator
Load Transient Response
Linear Regulator
Line Transient Response
Current Source
Line Transient Response
Current Source
Line Transient Response
Linear Regulator
Turn-On Response
I
MON
Pin Line Regulation
Linear Regulator
Load Transient Response
Linear Regulator
Load Transient Response
Linear Regulator
Load Transient Response
INPUT-TO-OUTPUT DIFFERENTIAL VOLTAGE (V)
0
0
I
MON
PIN CURRENT (µA)
10
20
30
6 12 18 24
3791 TA02b
30
40
50
5
15
25
35
45
36
I
LOAD
= 200mA
TIME (µs)
0
OUTPUT VOLTAGE DEVIATION (mV)
LOAD
CURRENT (mA)
–50
0
50
160 180
8081 G19
–100
400
0
40
80
120 20 200 60
100
140
200
150
100
V
IN
= 3V
V
OUT
= 1V
C
SET
= 0.1µF
C
OUT
= 2.2µF
∆I
LOAD
= 100mA TO 500mA
TIME (µs)
0
OUTPUT VOLTAGE DEVIATION (mV)
LOAD
CURRENT (mA)
–100
0
100
160 180
3081 G20
–200
2.0
0
40
80
120 20 200 60
100
140
1.0
300
200
V
IN
= 3V
V
OUT
= 1V
C
SET
= 0.1µF
C
OUT
= 2.2µF
∆I
LOAD
= 500mA TO 1.5A
TIME (µs)
0
OUTPUT VOLTAGE DEVIATION (mV)
LOAD
CURRENT (mA)
–200
–100
0
40 45
3081 G21
600
400
0
10
20
30 5 50 15
25
35
200
200
100
V
IN
= 3V
V
OUT
= 1V
C
SET
= 30pF
C
OUT
= 0
∆I
LOAD
= 100mA TO 500mA
t
r
= t
f
= 1µs
TIME (µs)
0
OUTPUT VOLTAGE DEVIATION (mV)
LOAD
CURRENT (mA)
–400
–200
0
40 45
3081 G22
1.5
1.0
0
10 20 30 5 50 15 25 35
0.5
400
200
V
IN
= 3V
V
OUT
= 1V
C
SET
= 30pF
C
OUT
= 0
∆I
LOAD
= 500mA TO 1.5A
t
r
= t
f
= 1µs
TIME (µs)
0
OUTPUT VOLTAGE DEVIATION (mV)
INPUT VOLTAGE (V)
3
4
5
40 45
3081 G23
0.1
0
–0.2
10
20
30
5 50
15
25
35
–0.1
7
6
R
SET
= 20k
R
LOAD
= 0.67Ω
C
OUT
= 2.2µF
C
SET
= 0.1µF
TIME (µs)
0
OUTPUT CURRENT (mA)
INPUT VOLTAGE (V)
2
3
4
40 45
3081 G24
150
100
0
10
20
30 5 50 15
25
35
50
6
5
R
SET
= 6.04k
R
OUT
= 3.01Ω
C
OUT
= 0
C
SET
= 30pF
100mA CURRENT SOURCE CONFIGURATION
TIME (µs)
0
OUTPUT CURRENT (A)
INPUT VOLTAGE (V)
2
3
4
40 45
3081 G25
1.2
1.0
0.6
10 20 30 5 50 15 25 35
0.8
6
5
R
SET
= 6.04k
R
OUT
= 0.3Ω
C
OUT
= 0
C
SET
= 30pF
1A CURRENT SOURCE CONFIGURATION
TIME (µs)
0
OUTPUT VOLTAGE (V)
INPUT VOLTAGE (V)
0
1
2
40 45
3081 G26
1.0
0.5
–0.5
10
20
30
5 50
15
25
35
0
4
3
R
SET
= 20k
R
LOAD
= 0.67Ω
C
OUT
= 2.2µF CERAMIC
C
SET
= 0
Typical perForMance characTerisTics
T
J
= 25°C unless otherwise specified.