Datasheet

LT3042
9
3042fb
For more information www.linear.com/LT3042
TYPICAL PERFORMANCE CHARACTERISTICS
V
OUT
Forced Above V
OUT(NOMINAL)
Power Supply Ripple Rejection Power Supply Ripple Rejection
PG Output Low Voltage PG Pin Leakage Current
I
SET
During Start-Up with Fast
Start-Up Enabled
I
SET
During Start-Up with Fast
Start-Up Enabled
Output Overshoot Recovery
Current Sink
Output Overshoot Recovery
Current Sink
T
J
= 25°C, unless otherwise noted.
V
PG
(mV)
50
5
45
35
25
15
40
30
20
10
0
3042 G34
V
IN
= 2V
V
PGFB
= 290mV
I
PG
= 100µA
TEMPERATURE (°C)
–75 25 125–25 75
150
0 100–50 50
CURRENT (mA)
14
2
10
6
12
8
4
0
3042 G40
OUTPUT VOLTAGE (V)
4 10 148 12
15
9 1375 6 11
V
IN
= 5V
R
SET
= 33.2kΩ
OUTPUT CURRENT
INPUT CURRENT
V
OUT
– V
SET
(mV)
0
OUTPUT SINK CURRENT (mA)
10
8
6
2
4
0
5 15
3042 G38
20
10
V
IN
= 5V
R
SET
= 33.2kΩ
155°C
130°C
25°C
–55°C
PSRR (dB)
120
110
70
80
50
30
100
90
60
40
20
3042 G41
FREQUENCY (Hz)
10 100 1k 1M
10M
100k10k
V
IN
= 5V
R
SET
= 33.2kΩ
C
OUT
= 4.7µF
I
L
= 200mA
C
SET
= 4.7µF
C
SET
= 0.47µF
OUTPUT SINK CURRENT (mA)
7
1
5
3
6
4
2
0
3042 G39
TEMPERATURE (°C)
–75 25 125–25 75
150
0 100–50 50
V
IN
= 5V
R
SET
= 33.2kΩ
V
OUT
– V
SET
> 5mV
PSRR (dB)
120
110
70
80
50
30
100
90
60
40
20
3042 G42
FREQUENCY (Hz)
10 100 1k 1M
10M
100k10k
V
IN
= 5V
R
SET
= 33.2kΩ
C
SET
= 0.47µF
I
L
= 200mA
C
OUT
= 4.7µF
C
OUT
= 22µF
I
PG
(nA)
100
10
90
70
50
30
80
60
40
20
0
3042 G35
V
PG
= 2V
V
PGFB
= 310mV
TEMPERATURE (°C)
–75 25 125–25 75
150
0 100–50 50
I
SET
(mA)
2.5
2.0
1.0
1.5
0.5
0
3042 G36
TEMPERATURE (°C)
–75 25 125–25 75 1500 100–50 50
V
IN
= 2.5V
V
PGFB
= 290mV
V
SET
= 1.3V
V
PGFB
= 290mV
V
SET
= 1.3V
V
IN
-TO-V
SET
DIFFERENTIAL (V)
0
2
4
6
8
10
12
14
16
18
20
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
I
SET
(mA)
3042 G37
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.