IC LDO REG W/SHTDWN ADJ 8-MSOP

LT1521CMS8

Manufacturer Part NumberLT1521CMS8
DescriptionIC LDO REG W/SHTDWN ADJ 8-MSOP
ManufacturerLinear Technology
LT1521CMS8 datasheet
 

Specifications of LT1521CMS8

Regulator TopologyPositive AdjustableVoltage - Output3.8 ~ 20 V
Voltage - Input4.3 ~ 20 VVoltage - Dropout (typical)0.5V @ 300mA
Number Of Regulators1Current - Output300mA
Current - Limit (min)320mAOperating Temperature0°C ~ 125°C
Mounting TypeSurface MountPackage / Case8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS StatusContains lead / RoHS non-compliant  
1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
13
14
15
16
Page 6/16

Download datasheet (201Kb)Embed
PrevNext
LT1521/LT1521-3
LT1521-3.3/LT1521-5
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
LT1521-3
Ground Pin Current
8
T
= 25 C
J
7
*FOR V
= 3V
OUT
6
R
= 10
LOAD
5
I
= 300mA*
LOAD
4
R
= 20
LOAD
3
I
= 150mA*
LOAD
2
1
R
= 30
LOAD
I
= 100mA*
LOAD
0
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE (V)
LT1521 • TPC13
LT1521-5
Ground Pin Current
1000
T
= 25 C
J
900
*FOR V
= 5V
OUT
R
= 100
LOAD
800
I
= 50mA*
LOAD
700
600
R
= 200
LOAD
I
= 25mA*
500
LOAD
R
= 500
400
LOAD
I
= 10mA*
LOAD
300
200
R
= 5k
LOAD
100
I
= 1mA*
LOAD
0
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE (V)
LT1521 • TPC16
LT1521
Ground Pin Current
8
T
= 25 C
J
V
= V
7
OUT
ADJ
*FOR V
= 3.75V
OUT
R
= 12.5
6
LOAD
I
=300mA*
LOAD
5
4
R
= 25
LOAD
3
I
=150mA*
LOAD
2
1
R
= 37.5
LOAD
I
=100mA*
LOAD
0
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE (V)
LT1521 • TPC19
6
LT1521-3.3
Ground Pin Current
1000
T
= 25 C
J
900
*FOR V
= 3.3V
OUT
800
R
= 66
LOAD
700
I
= 50mA*
LOAD
600
R
= 132
LOAD
I
= 25mA*
500
LOAD
400
R
= 330
LOAD
300
I
= 10mA*
LOAD
200
R
= 3.3k
LOAD
I
= 1mA*
LOAD
100
0
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE (V)
LT1521 • TPC14
LT1521-5
Ground Pin Current
8
T
= 25 C
J
R
= 16.7
7
LOAD
*FOR V
= 5V
OUT
I
= 300mA*
LOAD
6
5
4
R
= 33.3
3
LOAD
I
= 150mA*
LOAD
2
1
R
= 50
LOAD
I
= 100mA*
LOAD
0
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE (V)
LT1521 • TPC17
Ground Pin Current
10
V
= 3V (LT1521-3)
IN
9
V
= 3.3V (LT1521-3.3)
IN
T
= 125 C
V
= 5V (LT1521-5)
J
8
IN
V
= 3.75V (LT1521)
IN
7
DEVICE IS OPERATING
IN DROPOUT
6
5
T
= 25 C
J
T
= 55 C
J
4
3
2
1
0
0
50
100
150
200
250
300
OUTPUT CURRENT (mA)
LT1521 • TPC20
LT1521-3.3
Ground Pin Current
8
T
= 25 C
J
7
*FOR V
= 3.3V
OUT
6
R
= 11
LOAD
5
I
= 300mA*
LOAD
4
R
= 22
3
LOAD
I
= 150mA*
LOAD
2
1
R
= 33
LOAD
I
= 100mA*
LOAD
0
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE (V)
LT1521 • TPC15
LT1521
Ground Pin Current
1000
T
= 25 C
V
= V
J
OUT
ADJ
900
*FOR V
= 3.75V
OUT
800
R
= 75
LOAD
700
I
= 50mA*
LOAD
600
R
= 150
LOAD
I
= 25mA*
500
LOAD
400
R
= 375
LOAD
I
= 10mA*
300
LOAD
200
R
= 3.8k
LOAD
I
= 1mA*
100
LOAD
0
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE (V)
LT1521 • TPC18
Shutdown Pin Threshold
(On-to-Off)
2.0
I
= 1mA
1.8
LOAD
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50
–25
0
25
50
75
100
125
TEMPERATURE ( C)
LT1521 • TPC21
1521335fb