Datasheet
LT3071
8
3071fc
For more information www.linear.com/LT3071
TYPICAL PERFORMANCE CHARACTERISTICS
BIAS Pin Ripple Rejection
IN Pin Ripple Rejection IN Pin Ripple Rejection
FREQUENCY (Hz)
10 100
40
BIAS PIN RIPPLE REJECTION (dB)
50
60
70
80
1k 10k 100k 1M 10M
3071 G30
30
20
10
0
90
100
V
BIAS
= 2.5V + 500mV
P-P
V
BIAS
= 2.7V + 500mV
P-P
V
BIAS
= 3.3V + 500mV
P-P
V
IN
= 1.3V
V
OUT
= 1V
I
OUT
= 5A
C
OUT
= 10µF + 4.7µF + 2.2µF
FREQUENCY (Hz)
10 100
IN PIN RIPPLE REJECTION (dB)
40
50
60
1k 10k 100k 1M 10M
3071 G31
30
20
10
0
70
80
C
OUT
= 117µF
C
OUT
= 16.9µF
V
OUT
= 1V
V
IN
= 1.3V + 50mV
P-P
RIPPLE
V
BIAS
= 2.5V
I
OUT
= 1A
FREQUENCY (Hz)
10 100
IN PIN RIPPLE REJECTION (dB)
40
50
60
1k 10k 100k 1M 10M
3071 G32
30
20
10
0
70
80
C
OUT
= 117µF
C
OUT
= 16.9µF
V
OUT
= 1V
V
IN
= 1.3V + 50mV
P-P
RIPPLE
V
BIAS
= 2.5V
I
OUT
= 5A
Current Limit vs V
IN
– V
OUT
IN-TO-OUT VOLTAGE DIFFERENTIAL (V)
0
CURRENT LIMIT (A)
4
6
2.00
3071 G29
2
0
0.50
1.00
1.50
0.25
0.75
1.25
1.75
8
3
5
1
7
V
OUT
= 1.8V
V
OUT
= 1.2V
V
OUT
= 0.8V
V
BIAS
= 3.3V
T
J
= 25°C
Current Limit vs Temperature
TEMPERATURE (°C)
–75
CURRENT LIMIT (A)
7.50
7.25
7.00
6.75
6.50
6.25
6.00
5.75
5.50
5.25
5.00
125
3071 G28
–25 25 75 175100–50 0 50 150
V
IN
= V
OUT(NOMINAL)
+ 300mV
V
OUT
= 1.8V, V
BIAS
= 3.3V
V
OUT
= 1.2V, V
BIAS
= 3.3V
V
OUT
= 0.8V, V
BIAS
= 2.5V
AVERAGE INPUT/OUTPUT DIFFERENTIAL (V)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0
10
20
30
40
50
60
70
80
90
100
110
120
PSRR (dB)
vs V
IN
– V
OUT
, 1V/5A
IN Pin Ripple Rejection
3071 G33
50mV
P-P
RIPPLE ON V
IN
C
OUT
= 16.9μF
V
BIAS
= 2.5V
T
A
= 25°C
RIPPLE AT f = 10kHz
RIPPLE AT f = 100kHz
RIPPLE AT f = 1MHz
AVERAGE INPUT/OUTPUT DIFFERENTIAL (V)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0
10
20
30
40
50
60
70
80
90
100
110
120
PSRR (dB)
vs V
IN
– V
OUT
, 1V/2.5A
IN Pin Ripple Rejection
3071 G34
50mV
P-P
RIPPLE ON V
IN
C
OUT
= 16.9μF
V
BIAS
= 2.5V
T
A
= 25°C
RIPPLE AT f = 10kHz
RIPPLE AT f = 100kHz
RIPPLE AT f = 1MHz
AVERAGE INPUT/OUTPUT DIFFERENTIAL (V)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0
10
20
30
40
50
60
70
80
90
100
110
120
PSRR (dB)
vs V
IN
– V
OUT
, 1V/1A
IN Pin Ripple Rejection
3071 G35
50mV
P-P
RIPPLE ON V
IN
C
OUT
= 16.9μF
V
BIAS
= 2.5V
T
A
= 25°C
RIPPLE AT f = 10kHz
RIPPLE AT f = 100kHz
RIPPLE AT f = 1MHz
AVERAGE INPUT/OUTPUT DIFFERENTIAL (V)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0
10
20
30
40
50
60
70
80
90
100
110
120
PSRR (dB)
vs V
IN
– V
OUT
, 1V/5A
IN Pin Ripple Rejection
3071 G36
50mV
P-P
RIPPLE ON V
IN
C
OUT
= 117μF
V
BIAS
= 2.5V
T
A
= 25°C
RIPPLE AT f = 10kHz
RIPPLE AT f = 100kHz
RIPPLE AT f = 1MHz
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