LT1121-3.3 Linear Technology, LT1121-3.3 Datasheet - Page 5

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

TYPICAL PERFOR
800
700
600
500
400
300
200
100
14
12
10
10
8
6
4
2
0
9
8
7
6
5
4
3
2
1
0
0
0
Ground Pin Current
LT1121-3.3
Ground Pin Current
0
0
LT1121-3.3
Ground Pin Current
T
V
V
V
DEVICE IS OPERATING
IN DROPOUT
T
J
IN
IN
IN
J
20
1
1
= 25°C
= 25°C
3.3V (LT1121-3.3)
5V (LT1121-5)
3.75V (LT1121)
2
2
40
OUTPUT CURRENT (mA)
*FOR V
*FOR V
3
INPUT VOLTAGE (V)
3
INPUT VOLTAGE (V)
T
60
J
4
4
R
I
OUT
25°C
LOAD
OUT
LOAD
80
5
5
= 3.3V
= 3.3V
T
= 150mA*
= 22
J
100
6
6
R
I
R
I
R
I
LOAD
R
I
LOAD
LOAD
125°C
R
I
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
7
7
120
T
J
W
= 25mA*
= 10mA*
= 100mA*
= 130
= 1mA*
= 330
= 33
= 50mA*
8
= 3.3k
8
= 66
–55°C
140 160
A
1121 G29
1121 G09
1121 G10
9
9
U
10
10
CE
C
HARA TERISTICS
800
700
600
500
400
300
200
100
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
10
0
0
9
8
7
6
5
4
3
2
1
0
–50
0
0
Shutdown Pin Threshold
(On-to-Off)
LT1121-5
Ground Pin Current
LT1121-5
Ground Pin Current
I
T
T
LOAD
J
J
1
1
–25
= 25°C
= 25°C
= 1mA
2
2
C
0
TEMPERATURE (°C)
3
INPUT VOLTAGE (V)
3
INPUT VOLTAGE (V)
*FOR V
4
4
25
*FOR V
5
5
OUT
50
OUT
6
R
I
R
I
= 5V
6
LOAD
LOAD
R
I
R
I
R
I
LOAD
R
I
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
= 5V
75
7
7
= 25mA*
= 10mA*
LT1121/LT1121-3.3/LT1121-5
= 1mA*
= 200
= 500
= 150mA*
= 100mA*
= 5k
= 50mA*
= 33
= 50
= 100
8
8
100
1121 G16
1121 G06
1121 G05
9
9
125
10
10
800
700
600
500
400
300
200
100
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
10
0
9
8
7
6
5
4
3
2
1
0
–50
0
0
LT1121
Ground Pin Current
0
LT1121
Ground Pin Current
Shutdown Pin Threshold
(Off-to-On)
T
V
T
V
J
OUT
–25
J
OUT
1
1
= 25°C
= 25°C
= V
= V
2
2
ADJ
ADJ
0
TEMPERATURE (°C)
3
INPUT VOLTAGE (V)
3
INPUT VOLTAGE (V)
*FOR V
*FOR V
4
25
4
OUT
5
5
OUT
50
= 3.75V
6
6
= 3.75V
R
I
R
I
I
LOAD
LOAD
LOAD
R
I
LOAD
LOAD
R
I
R
I
LOAD
I
75
LOAD
LOAD
LOAD
7
R
I
LOAD
LOAD
7
LOAD
LOAD
LOAD
= 150mA*
= 100mA*
= 150mA
= 25
= 38
= 50mA*
8
= 10mA*
8
= 25mA*
= 75
= 1mA
100
= 380
= 150
= 1mA*
= 3.8k
1121 G17
1121 G07
1121 G08
9
9
5
125
10
10