IC LDO REG W/SHTDWN ADJ 8-SOIC

LT1521CS8

Manufacturer Part NumberLT1521CS8
DescriptionIC LDO REG W/SHTDWN ADJ 8-SOIC
ManufacturerLinear Technology
LT1521CS8 datasheet
 

Specifications of LT1521CS8

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-SOIC (3.9mm Width)
Lead Free Status / RoHS StatusContains lead / RoHS non-compliant  
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ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
PARAMETER
CONDITIONS
Regulated Output Voltage
LT1521-3
(Note 4)
LT1521-3.3
LT1521-5
LT1521 (Note 5)
Line Regulation
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
Load Regulation
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
Dropout Voltage (Note 6)
I
LOAD
I
LOAD
I
LOAD
I
LOAD
I
LOAD
I
LOAD
I
LOAD
I
LOAD
I
LOAD
I
LOAD
Ground Pin Current (Note 7)
I
LOAD
I
LOAD
I
LOAD
I
LOAD
I
LOAD
I
LOAD
I
LOAD
Adjust Pin Bias Current (Notes 5, 8)
T
J
Shutdown Threshold
V
OUT
V
OUT
Shutdown Pin Current (Note 9)
V
SHDN
Quiescent Current in Shutdown (Note 10)
V
IN
Ripple Rejection
V
IN
f
RIPPLE
Current Limit
V
IN
V
IN
The
denotes the specifications which apply over the full operating
= 25 C.
A
V
= 3.5V, I
= 1mA, T
= 25 C
IN
OUT
J
4V < V
< 20V, 1mA < I
< 300mA
IN
OUT
V
= 3.8V, I
= 1mA, T
= 25 C
IN
OUT
J
4.3V < V
< 20V, 1mA < I
IN
OUT
V
= 5.5V, I
= 1mA, T
= 25 C
IN
OUT
J
6V < V
< 20V, 1mA < I
< 300mA
IN
OUT
V
= 4.3V, I
= 1mA, T
= 25 C
IN
OUT
J
4.8V < V
< 20V, 1mA < I
IN
OUT
V
= 4.5 to 20V, I
= 1mA
IN
OUT
V
= 4.8 to 20V, I
= 1mA
IN
OUT
V
= 5.5 to 20V, I
= 1mA
IN
OUT
V
= 4.3 to 20V, I
= 1mA
IN
OUT
I
= 1mA to 300mA, T
LOAD
J
I
= 1mA to 300mA, T
LOAD
J
I
= 1mA to 300mA, T
LOAD
J
I
= 1mA to 300mA, T
LOAD
J
I
= 1mA to 300mA, T
>25 C
LOAD
J
I
= 1mA to 300mA, T
> 25 C
LOAD
J
I
= 1mA to 300mA, T
> 25 C
LOAD
J
I
= 1mA to 300mA, T
> 25 C
LOAD
J
= 1mA, T
= 25 C
J
= 1mA
= 50mA, T
= 25 C
J
= 50mA
= 100mA, T
= 25 C
J
= 100mA
= 150mA, T
= 25 C
J
= 150mA
= 300mA, T
= 25 C
J
= 300mA
= 0mA
= 1mA
= 10mA
= 50mA
= 100mA
= 150mA
= 300mA
= 25 C
= Off to On
= On to Off
= 0V
= V
(NOMINAL) + 1V, V
= 0V
OUT
SHDN
– V
= 1V(Avg), V
= 0.5V
,
OUT
RIPPLE
P–P
= 120Hz, I
= 150mA
LOAD
– V
= 7V, T
= 25 C
OUT
J
= V
(NOMINAL) + 1.5V, V
= – 0.1V
OUT
OUT
LT1521/LT1521-3
LT1521-3.3/LT1521-5
MIN
TYP
MAX
2.950
3.000
3.050
2.900
3.000
3.100
3.250
3.300
3.350
< 300mA
3.200
3.300
3.400
4.925
5.000
5.075
4.850
5.000
5.150
3.695
3.750
3.805
< 300mA
3.640
3.750
3.860
1.5
20
1.5
20
1.5
20
1.5
20
25 C
– 20
– 30
25 C
– 20
– 30
25 C
– 25
– 45
25 C
– 20
– 30
– 20
– 55
– 20
– 55
– 25
– 75
– 20
– 55
130
170
250
290
350
450
350
420
550
400
470
600
500
600
750
12
25
65
100
300
450
0.8
1.5
1.4
2.5
2.2
4.0
6.5
12.0
50
100
1.20
2.80
0.25
0.75
2.0
5.0
6
12
50
58
400
800
320
400
UNITS
V
V
V
V
V
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
A
A
A
mA
mA
mA
mA
nA
V
V
A
A
dB
mA
mA
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