LT3028 LINER [Linear Technology], LT3028 Datasheet - Page 7

• Manufacturer Part Number: LT3028
• Description: Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulators with Independent Inputs
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFOR A CE CHARACTERISTICS
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
10
0
0
0.01
10
Output 2
Input Ripple Rejection
Output 1
Input Ripple Rejection
I
V
C
T
I
V
1V + 50mV
C
T
L
L
IN2
BYP
J
IN1
J
BYP
= 100mA
= 500mA
= 25°C
= 25°C
= V
= 2.3V + 50mV
= 0
= 0
100
0.1
OUT1(NOMINAL)
RMS
FREQUENCY (kHz)
FREQUENCY (Hz)
RIPPLE
1k
1
C
RMS
OUT
2.5
2.0
1.5
1.0
0.5
+
0
–50
RIPPLE
= 1µF
Output 2 Minimum Input Voltage
C
V
10k
10
OUT
OUT2
C
–25
C
OUT
= 10µF
OUT
= 1.22V
W
100k
= 4.7µF
100
= 10µF
0
TEMPERATURE (°C)
3028 G26
3028 G29
U
1000
25
1M
50
I
L
I
L
= 100mA
= 50mA
75
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
10
0
0
0.01
10
100
Output 2
Input Ripple Rejection
Output 1
Input Ripple Rejection
C
I
V
C
T
I
V
1V + 50mV
C
T
C
L
L
J
BYP
IN1
OUT
J
IN2
OUT
BYP
3028 G32
= 100mA
= 500mA
= 25°C
= 25°C
= V
= 2.3V + 50mV
= 1000pF
= 10µF
= 0.01µF
= 10µF
125
100
0.1
OUT1(NOMINAL)
C
BYP
RMS
FREQUENCY (kHz)
= 100pF
FREQUENCY (Hz)
RIPPLE
C
1k
1
BYP
C
RMS
BYP
+
= 100pF
RIPPLE
= 0.01µF
10k
10
C
BYP
100k
100
= 1000pF
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0
–50
3028 G27
3028 G30
Output 1 Minimum Input Voltage
V
1000
OUT1
1M
–25
= 1.22V
0
TEMPERATURE (°C)
80
70
60
50
40
30
20
10
68
66
64
62
60
58
56
54
52
25
0
–50
–50
Output 2
Input Ripple Rejection
Output 1 Ripple Rejection
V
1V + 0.5V
AT f = 120Hz
I
V
1V + 0.5V
AT f = 120Hz
I
L
L
IN2
IN1
= 50mA
50
= 500mA
–25
–25
= V
= V
I
L
I
L
= 500mA
OUT2(NOMINAL)
OUT1(NOMINAL)
= 1mA
P-P
75
P-P
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
RIPPLE
RIPPLE
100
25
25
3028 G33
125
+
+
50
50
LT3028
75
75
100
100
3028 G28
3028 G31
7
3028f
125
125