LT1121-3.3 Linear Technology, LT1121-3.3 Datasheet - Page 4

• Manufacturer Part Number: LT1121-3.3
• Description: Micropower Low Dropout Regulators with Shutdown
• Manufacturer: Linear Technology

TYPICAL PERFOR
LT1121/LT1121-3.3/LT1121-5
4
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
120
100
0.7
0.6
0.5
0.4
0.3
0.2
0.1
80
60
40
20
0
0
–50
0
Guaranteed Dropout Voltage
0
LT1121-3.3
Quiescent Current
LT1121-3.3
Output Voltage
I
OUT
= TEST POINTS
1
20
–25
= 1mA
T
2
J
40
OUTPUT CURRENT (mA)
0
125°C
3
INPUT VOLTAGE (V)
TEMPERATURE (°C)
V
SHDN
60
4
25
T
= OPEN
J
80
5
V
50
25°C
SHDN
100
6
= 0V
7
75
120
T
R
J
LOAD
W
= 25°C
8
100
140 160
=
A
1121 G27
1121 G04
1121 G22
9
U
125
10
CE
C
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
0.7
0.6
0.5
0.4
0.3
0.2
0.1
120
100
80
60
40
20
HARA TERISTICS
0
–50
0
–50
Dropout Voltage
0
LT1121-5
Output Voltage
LT1121-5
Quiescent Current
I
OUT
–25
1
–25
= 1mA
I
LLOAD
2
C
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
3
INPUT VOLTAGE (V)
= 100mA
25
4
25
V
SHDN
5
50
50
6
= OPEN
I
V
LOAD
I
SHDN
LOAD
75
I
75
7
LOAD
T
R
J
LOAD
= 150mA
= 50mA
= 25°C
= 0V
8
= 1mA
100
100
1121 G14
=
1121 G23
1121 G02
9
125
125
10
3.83
3.81
3.79
3.77
3.75
3.73
3.71
3.69
3.67
120
100
10
40
30
20
10
80
60
40
20
0
0
–50
–50
0
Quiescent Current
LT1121
Quiescent Current
LT1121
Adjust Pin Voltage
I
OUT
V
R
IN
LOAD
1
–25
–25
= 1mA
= 6V
2
=
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
3
INPUT VOLTAGE (V)
V
V
SHDN
V
SHDN
SHDN
4
25
25
=OPEN
= OPEN
5
=0V
50
50
V
SHDN
6
75
75
T
R
V
= 0V
7
J
LOAD
OUT
= 25°C
8
= V
100
100
=
1121 G11
1121 G24
ADJ
1121 G03
9
125
125
10