Datasheet

5
LT3027
3027fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
SHDN1 or SHDN2 Pin Input
Current
ADJ1 or ADJ2 Pin Bias Current
Current Limit
TEMPERATURE (°C)
–50
SHDN PIN INPUT CURRENT (µA)
0
50
75
3027 G12
–25
25
100
125
V
SHDN
= 20V
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
TEMPERATURE (°C)
–50
ADJ PIN BIAS CURRENT (nA)
100
90
80
70
60
50
40
30
20
10
0
0
50
75
3027 G13
–25
25
100
125
INPUT VOLTAGE (V)
0
SHORT-CIRCUIT CURRENT (mA)
2
4
5
3027 G14
1
3
6
7
350
300
250
200
150
100
50
0
V
OUT
= 0V
T
J
= 25°C
Current Limit
TEMPERATURE (°C)
–50
CURRENT LIMIT (mA)
0
50
75
3027 G15
–25
25
100
125
350
300
250
200
150
100
50
0
V
IN
= 7V
V
OUT
= 0V
SHDN PIN VOLTAGE (V)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
SHDN PIN INPUT CURRENT (µA)
3027 G11
0123
4
5
678910
SHDN1 or SHDN2 Pin Input
Current
TEMPERATURE (°C)
–50
SHDN PIN THRESHOLD (V)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
50
75
3027 G10
–25
25
100
125
I
L
= 100mA
I
L
= 1mA
SHDN1 or SHDN2 Pin Threshold
(Off-to-On)
Input Ripple Rejection
FREQUENCY (kHz)
RIPPLE REJECTION (dB)
80
70
60
50
40
30
20
10
0
0.01 1 10 1000
3027 G18
0.1 100
I
L
= 100mA
V
IN
= 2.3V + 50mV
RMS
RIPPLE
C
BYP
= 0
C
OUT
= 10µF
C
OUT
= 1µF
Input Ripple Rejection
FREQUENCY (kHz)
RIPPLE REJECTION (dB)
80
70
60
50
40
30
20
10
0
0.01 1 10 1000
3027 G19
0.1 100
I
L
= 100mA
V
IN
= 2.3V + 50mV
RMS
RIPPLE
C
OUT
= 10µF
C
BYP
= 0.01µF
C
BYP
= 1000pF
C
BYP
= 100pF