LT3050 Series
8
3050fa
Input Ripple Rejection Minimum Input Voltage
Load Regulation
TYPICAL PERFORMANCE CHARACTERISTICS
T
J
= 25°C, unless otherwise noted.
FREQUENCY (Hz)
INPUT RIPPLE REJECTION (dB)
90
40
50
60
70
80
30
3050 G19
0
10
20
10 100 1K 10K 100K 1M 10M
I
L
= 100mA
C
REF/BYP
= 100pF
V
OUT
= 5V
V
IN
= 5.8V + 50mV
RMS
RIPPLE
C
OUT
= 2.2µF
C
OUT
= 10µF
TEMPERATURE (°C)
MINIMUM INPUT VOLTAGE (V)
2.2
1.2
1.4
1.6
1.8
2.0
1.0
3050 G20
0
0.2
0.4
0.6
0.8
–75 –50 –25 0 25 50 75 100 125 150 175
I
L
=100mA
TEMPERATURE (°C)
LOAD REGULATION (mV)
4
1
2
3
0
3050 G21
–4
–2
–1
–3
–75 –50 0 25–25 50 75 100 125 150 175
∆I
L
= 1mA TO 100mA
V
OUT
= 0.6V
V
IN
= 2.2V
TEMPERATURE (°C)
RIPPLE REJECTION (dB)
100
20
40
50
60
70
80
90
30
10
3050 G19a
0
–75 –50 –25 0 25 50 75 100 125 150 175
I
L
= 100mA
V
OUT
= 5V
V
IN
= 5.8V + 0.5V
P-P
RIPPLE AT f = 120Hz
C
OUT
= 10µF
C
REF/BYP
= 10nF
Ripple Rejection vs Temperature
Reverse Output Current
Reverse Output Current
Input Ripple Rejection
V
OUT
(V)
I
OUT
(µA)
1.0
0.3
0.6
0.7
0.8
0.9
0.4
0.5
0.1
0.2
3050 G16
0
0 1020304050
ALL PINS GROUNDED EXCEPT FOR OUT
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
90
40
50
60
70
80
30
3050 G18
0
10
20
10 100 1K 10K 100K 1M 10M
I
L
= 100mA
C
OUT
= 10µF
V
OUT
= 5V
V
IN
= 5.8V + 50mV
RMS
RIPPLE
C
REF/BYP
= 0
C
REF/BYP
= 100pF
C
REF/BYP
= 10nF
TEMPERATURE (°C)
CURRENT(µA)
50
10
20
25
30
35
40
45
15
5
3050 G17
0
–75 –50 –25 0 25 50 75 100 125 150 175
V
OUT
= V
ADJ
= 1.2V
V
IN
= 0
I
ADJ
I
OUT
TEMPERATURE (°C)
LOAD REGULATION (mV)
–9
–6
–3
–0
–18
–15
–12
–21
3050 G21a
–33
–27
–24
–30
–75 –50 0 25–25 50 75 100 125 150 175
∆I
L
= 1mA TO 100mA
V
OUT
= 3.3V
V
IN
= 3.9V
TEMPERATURE (°C)
LOAD REGULATION (mV)
–10
–5
–0
–25
–20
–15
–30
3050 G21b
–50
–40
–35
–45
–75 –50 0 25–25 50 75 100 125 150 175
∆I
L
= 1mA TO 100mA
V
OUT
= 5V
V
IN
= 5.6V
Load Regulation Load Regulation
