LT1521CS8 Linear Technology, LT1521CS8 Datasheet - Page 3

IC LDO REG W/SHTDWN ADJ 8-SOIC

LT1521CS8

Manufacturer Part Number
LT1521CS8
Description
IC LDO REG W/SHTDWN ADJ 8-SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LT1521CS8

Regulator Topology
Positive Adjustable
Voltage - Output
3.8 ~ 20 V
Voltage - Input
4.3 ~ 20 V
Voltage - Dropout (typical)
0.5V @ 300mA
Number Of Regulators
1
Current - Output
300mA
Current - Limit (min)
320mA
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
temperature range, otherwise specifications are at T
PARAMETER
Regulated Output Voltage
(Note 4)
Line Regulation
Load Regulation
Dropout Voltage (Note 6)
Ground Pin Current (Note 7)
Adjust Pin Bias Current (Notes 5, 8)
Shutdown Threshold
Shutdown Pin Current (Note 9)
Quiescent Current in Shutdown (Note 10)
Ripple Rejection
Current Limit
ELECTRICAL CHARACTERISTICS
CONDITIONS
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
T
V
V
V
V
V
f
V
V
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
RIPPLE
J
OUT
OUT
SHDN
IN
IN
IN
IN
= 25 C
= V
– V
– V
= V
= Off to On
= On to Off
= 1mA, T
= 1mA
= 50mA, T
= 50mA
= 100mA, T
= 100mA
= 150mA, T
= 150mA
= 300mA, T
= 300mA
= 0mA
= 1mA
= 10mA
= 50mA
= 100mA
= 150mA
= 300mA
= 0V
OUT
OUT
OUT
OUT
= 120Hz, I
(NOMINAL) + 1V, V
= 1V(Avg), V
= 7V, T
(NOMINAL) + 1.5V, V
J
A
J
= 25 C
J
J
J
LOAD
= 25 C
= 25 C.
J
= 25 C
= 25 C
= 25 C
V
4V < V
V
4.3V < V
V
6V < V
V
4.8V < V
= 25 C
IN
IN
IN
IN
V
V
V
V
I
I
I
I
I
I
I
I
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
IN
IN
IN
IN
= 150mA
The
= 3.5V, I
= 3.8V, I
= 5.5V, I
= 4.3V, I
RIPPLE
= 4.5 to 20V, I
= 4.8 to 20V, I
= 5.5 to 20V, I
= 4.3 to 20V, I
IN
IN
= 1mA to 300mA, T
= 1mA to 300mA, T
= 1mA to 300mA, T
= 1mA to 300mA, T
= 1mA to 300mA, T
= 1mA to 300mA, T
= 1mA to 300mA, T
= 1mA to 300mA, T
IN
IN
< 20V, 1mA < I
< 20V, 1mA < I
< 20V, 1mA < I
< 20V, 1mA < I
denotes the specifications which apply over the full operating
SHDN
= 0.5V
OUT
OUT
OUT
OUT
OUT
= 1mA, T
= 1mA, T
= 1mA, T
= 1mA, T
= 0V
P–P
= – 0.1V
OUT
OUT
OUT
OUT
,
= 1mA
= 1mA
= 1mA
= 1mA
OUT
OUT
J
J
J
J
OUT
OUT
= 25 C
= 25 C
= 25 C
= 25 C
J
J
J
J
J
J
J
J
< 300mA
< 300mA
>25 C
> 25 C
> 25 C
> 25 C
< 300mA
< 300mA
25 C
25 C
25 C
25 C
LT1521-3.3/LT1521-5
2.950
2.900
3.250
3.200
4.925
4.850
3.695
3.640
0.25
MIN
320
50
LT1521/LT1521-3
3.000
3.000
3.300
3.300
5.000
5.000
3.750
3.750
– 20
– 20
– 25
– 20
– 20
– 20
– 25
– 20
1.20
0.75
TYP
130
290
350
400
500
300
400
400
1.5
1.5
1.5
1.5
0.8
1.4
2.2
6.5
2.0
12
65
50
58
6
3.050
3.100
3.350
3.400
5.075
5.150
3.805
3.860
MAX
12.0
2.80
– 30
– 30
– 45
– 30
– 55
– 55
– 75
– 55
170
250
350
450
420
550
470
600
600
750
100
450
100
800
1.5
2.5
4.0
5.0
20
20
20
20
25
12
1521335fb
UNITS
3
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
mA
mA
mA
nA
dB
V
V
V
V
V
V
V
V
A
A
A
V
V
A
A

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